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VTP170XSDDF

型号：

VTP170XSDDF

品牌：

LITTELFUSE[ LITTELFUSE ]

页数：

14 页

PDF大小：

980 K

下载PDF手册
POLYSWITCH RESETTABLE  
DEVICES  
Strap Battery Devices  
Littelfuse PolySwitch, a pioneer of polymeric positive  
temperature coefficient (PPTC) resettable devices, offers  
several material platforms to help protect battery  
applications. Each of these material platforms offers  
different performance characteristics that allow the  
engineer greater design flexibility. PolySwitch devices  
for battery protection include SRP, LR4, VTP, VLP,  
VLR, MXP and MGP series, disc and special application  
strap devices.  
BENEFITS  
APPLICATIONS  
• Many material platforms and device form factors  
help provide engineers more design flexibility  
• Mobile phone and smart phone battery packs  
• Tablet PC battery packs  
• Compatible with high-volume electronics assembly  
• Assists in meeting regulatory requirements  
• Mobile radio battery packs  
• Computer battery packs  
• Low-resistance devices increase battery  
operating time  
• Digital camera battery packs  
• Portable media player battery packs  
• Power tools (charge line)  
FEATURES  
• RoHS compliant  
• Lead-free versions of all devices are available  
• Broad range of resettable devices available  
• Current ratings from 1.1A to 13A  
• Voltage ratings from 6V to 30V  
• Agency recognition: UL, CSA, TÜV  
• Fast time-to-trip  
• Low resistance  
RoHS Compliant, ELV Compliant  
Specifications subject to change without notice. ©2016 Littelfuse, Inc.  
PolySwitch Resettable Devices  
Strap Battery Devices  
Application Selection Guide  
The guide below lists PolySwitch strap battery devices which are typically used in applications.  
The following pages contain the specifications for the part numbers recommended below.  
Once a device is selected, the user should evaluate and test each product for its intended application.  
PolySwitch Resettable Devices — Key Device Selection Criteria  
Protection Application  
Additional Comments  
Installation Method  
Surface-mount  
Prismatic  
Lowest Resistance  
LowestThermal Cut-off  
Mobile Phone Battery Packs  
Li-ion  
Refer to Surface-mount Section of this Catalog  
MXP370BD  
VLP210F  
VLR175F  
—
Cordless Phone Battery Packs  
Mobile Radio Battery Packs  
Computer Battery Packs  
NiMH  
NiMH  
Cylindrical  
SRP175F  
Cylindrical  
LR4-380F  
—
SRP350F  
NiMH  
Li-ion  
Cylindrical  
Cylindrical  
Prismatic  
Prismatic  
LR4-900F  
—
LR4-1300SSF  
Consult Local Rep  
VLP270F  
—
Consult Local Rep  
VTP210GF  
—
Camcorder Battery Packs  
NiMH or Li-ion  
LR4-380F  
PDA Battery Packs  
Li-ion  
Prismatic  
Cylindrical  
VLP220F  
VLR175F  
Custom VTP  
Power Tools (Charge Line)  
NiCd, NiMH or Li-ion  
Custom LR4  
Table B1 — Product Series - Current Rating, Voltage Rating /Typical Resistance  
VLR  
VLP  
VTP  
MXP  
SRP  
LR4  
Typical ActivationTemperature  
Hold  
Current (A)  
85°C  
90°C  
90°C  
120°C  
125°C  
125°C  
1.10  
—
—
16V/0.054Ω  
—
—
—
1.20  
1.70  
1.75  
1.80  
1.90  
2.00  
2.10  
2.20  
2.30  
2.50  
2.60  
2.70  
3.10  
3.50  
3.70  
3.80  
4.20  
4.50  
5.50  
6.00  
7.30  
—
16V/0.053Ω  
—
—
15V/0.123Ω  
—
12V/0.025Ω  
—
16V/0.041Ω  
—
—
—
12V/0.024Ω  
16V/0.032Ω  
16V/0.040Ω  
—
15V/0.070Ω  
—
—
—
—
6V/0.0105Ω  
—
—
—
—
—
6V/0.011Ω  
—
15V/0.056Ω  
—
—
—
—
30V/0.045Ω  
—
—
16V/0.024Ω  
16V/0.024Ω  
—
—
—
—
16V/0.023Ω  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
12V/0.015Ω  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
6V/0.011Ω  
—
—
—
—
—
15V/0.031Ω  
—
16V/0.015Ω  
6V/0.0105Ω  
—
—
—
—
—
—
—
—
—
—
—
—
6V/0.0075Ω  
—
—
—
30V/0.024Ω  
—
6V/0.007Ω  
—
—
—
—
—
—
—
—
—
—
—
15V/0.020Ω  
—
30V/0.018Ω  
—
—
—
—
—
—
20V/0.016Ω  
20V/0.013Ω  
20V/0.011Ω  
20V/0.009Ω  
20V/0.008Ω  
20V/0.006Ω  
9.00  
13.00  
RoHS Compliant, ELV Compliant  
Specifications subject to change without notice. ©2016 Littelfuse, Inc.  
PolySwitch Resettable Devices  
Strap Battery Devices  
Table B2 —Thermal Derating [Hold Current (A) at AmbientTemperature (°C)]  
Maximum AmbientTemperature  
Part  
Number  
-40°C  
A
-20°C  
0°C  
20°C  
25°C  
40°C  
50°C  
60°C  
70°C  
80°C  
85°C  
85°CTypical Activation  
VLR*  
VLR170F  
VLR175F  
VLR175LF  
VLR230F  
3.5  
2.9  
2.9  
2.9  
4.2  
2.4  
2.4  
2.4  
3.4  
1.84  
1.87  
1.87  
2.52  
1.70  
1.75  
1.75  
2.30  
1.2  
1.3  
1.3  
1.7  
1.0  
1.0  
1.0  
1.3  
0.7  
0.8  
0.8  
0.9  
0.3  
0.3  
0.3  
0.4  
—
—
—
—
—
—
—
—
3.5  
3.5  
5.0  
90°CTypical Activation  
VLP*  
VLP120UF  
VLP175UAF  
VLP210F  
VLP220F  
VLP270F  
VTP*  
2.4  
2.1  
2.7  
3.6  
3.8  
4.7  
1.8  
2.3  
2.9  
3.0  
4.0  
1.30  
1.70  
2.31  
2.45  
3.05  
1.20  
1.75  
2.10  
2.20  
2.70  
1.0  
1.2  
1.6  
1.7  
2.2  
0.7  
1.0  
1.3  
1.4  
1.7  
0.6  
0.9  
1.0  
1.1  
1.4  
0.3  
0.5  
0.6  
0.7  
0.9  
0.2  
0.2  
0.3  
0.3  
0.4  
0.1  
0.1  
0.1  
0.1  
0.1  
3.2  
4.3  
4.5  
5.6  
VTP110F  
2.0  
3.2  
3.2  
3.2  
3.2  
4.1  
4.1  
1.7  
2.7  
2.7  
2.7  
2.7  
3.5  
3.5  
1.4  
2.2  
2.2  
2.2  
2.2  
2.9  
2.9  
1.12  
1.80  
1.80  
1.84  
1.84  
2.26  
2.26  
1.10  
1.70  
1.70  
1.75  
1.75  
2.10  
2.10  
0.85  
1.3  
1.3  
1.3  
1.3  
1.6  
1.6  
0.75  
1.0  
1.0  
1.0  
1.0  
1.3  
1.3  
0.7  
0.8  
0.8  
0.8  
0.8  
1.0  
1.0  
0.4  
0.5  
0.5  
0.5  
0.5  
0.7  
0.7  
0.2  
0.3  
0.3  
0.3  
0.3  
0.4  
0.4  
0.1  
0.1  
0.1  
0.1  
0.1  
0.1  
0.1  
VTP170F  
VTP170XSF  
VTP175F  
VTP175LF  
VTP210GF  
VTP210SF  
Maximum AmbientTemperature  
Part  
Number  
-40°C  
A
-20°C  
0°C  
20°C  
25°C  
40°C  
50°C  
60°C  
70°C  
75°C  
80°C  
85°C  
90°C  
120°CTypical Activation  
MXP*  
MXP180  
—
—
—
—
—
—
—
—
—
—
—
—
2.45  
2.6  
3.6  
3.8  
5.0  
5.0  
—
—
—
—
—
—
1.8  
1.9  
2.5  
2.7  
3.1  
3.7  
—
—
—
—
—
—
—
—
—
—
—
—
0.80  
0.85  
1.3  
—
—
—
—
—
—
—
—
—
—
1.0  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
MXP190BB  
MXP250K  
MXP270  
—
1.4  
0.3  
—
MXP310  
1.9  
MXP370BD  
1.9  
—
120˚CTypical Activation  
MGP  
MGP450  
MGP500  
—
—
—
—
—
—
—
—
4.5  
5.0  
—
—
—
—
2.6  
3.0  
—
—
—
—
—
—
—
—
—
2.0  
Maximum AmbientTemperature  
Part  
Number  
-40°C  
A
-20°C  
0°C  
20°C  
25°C  
40°C  
50°C  
60°C  
70°C  
80°C  
85°C  
125°CTypical Activation  
SRP  
SRP120F  
SRP175F  
SRP200F  
SRP350F  
SRP420F  
LR4  
1.9  
2.5  
3.1  
5.3  
6.3  
1.7  
2.2  
2.8  
4.8  
5.7  
1.5  
2.0  
2.5  
4.3  
5.1  
1.20  
1.75  
2.00  
3.50  
4.20  
1.17  
1.68  
1.97  
3.44  
4.11  
1.0  
1.4  
1.7  
3.0  
3.6  
0.9  
1.3  
1.5  
2.7  
3.3  
0.8  
1.2  
1.4  
2.5  
3.0  
0.6  
1.0  
1.2  
2.1  
2.6  
0.5  
0.9  
1.0  
1.8  
2.2  
0.4  
0.8  
0.9  
1.7  
2.1  
LR4-190F  
LR4-260F  
LR4-380F  
LR4-380XF  
LR4-450F  
LR4-550F  
LR4-600F  
LR4-600XF  
LR4-730F  
LR4-900F  
LR4-1300SSF  
2.8  
3.8  
5.4  
5.4  
6.5  
7. 6  
2.5  
3.4  
4.9  
4.9  
5.8  
6.9  
7. 8  
2.3  
3.1  
4.4  
4.4  
5.3  
6.2  
7. 1  
1.9  
2.6  
3.8  
3.8  
4.5  
5.5  
6.0  
6.0  
7. 3  
1.86  
2.54  
3.64  
3.64  
4.38  
5.32  
5.86  
5.86  
7. 13  
1.6  
2.2  
3.3  
3.3  
3.9  
4.7  
5.2  
5.2  
6.3  
7. 5  
1.5  
2.0  
3.0  
3.0  
3.6  
4.3  
4.7  
4.7  
5.7  
6.8  
10.3  
1.4  
1.9  
2.8  
2.8  
3.3  
4.0  
4.4  
4.4  
5.4  
6.2  
9.5  
1.2  
1.7  
2.5  
2.5  
2.9  
3.6  
3.9  
3.9  
4.7  
5.5  
8.6  
1.1  
1.4  
2.3  
2.3  
2.6  
3.2  
3.4  
3.4  
4.2  
4.9  
7. 7  
1.0  
1.3  
2.1  
2.1  
2.4  
3.0  
3.2  
3.2  
4.0  
4.5  
7. 2  
8.7  
8.7  
10.5  
12.7  
17. 9  
7. 8  
7. 1  
9.5  
11.4  
16.2  
8.6  
10.0  
14.5  
9.0  
13.0  
8.50  
12.40  
11.1  
* Product electrical characteristics determined at 25°C.  
RoHS Compliant, ELV Compliant  
Specifications subject to change without notice. ©2016 Littelfuse, Inc.  
PolySwitch Resettable Devices  
Strap Battery Devices  
Figure B1 —Thermal Derating Curve  
A
B
C
D
E
F
=
=
=
=
=
=
LR4  
Figure B1  
SRP  
200  
180  
160  
140  
120  
100  
80  
E
VTP, VLP, MXP  
D
C
MGP  
VLR  
RSD  
F
B
A
60  
A
B
40  
F
20  
D
C
E
0
-50  
-40  
-30  
-20  
-10  
0
10  
20  
30  
40  
50  
60  
70  
80  
90  
Temperature (˚C)  
Table B3 — Electrical Characteristics  
IH  
IT  
VMAX  
IMAX  
(A)  
PD MAX  
(W)  
MaxTime-to-trip  
RMIN  
RMAX  
R1MAX  
Figure for  
Dimension  
Part  
Number  
(A)  
(A)  
(VDC  
)
(A)  
(s)  
(Ω)  
(Ω)  
(Ω)  
85°CTypical Activation  
VLR*  
VLR170F  
VLR175F  
VLR175LF  
VLR230F  
1.70  
1.75  
1.75  
2.30  
4.1  
4.2  
4.2  
5.0  
12  
12  
12  
12  
100  
100  
100  
100  
1.4  
1.4  
1.4  
2.5  
8.50  
8.75  
8.75  
10.00  
5.0  
5.0  
5.0  
5.0  
0.018  
0.017  
0.017  
0.012  
0.032  
0.031  
0.031  
0.018  
0.064  
0.062  
0.062  
0.036  
B3  
B3  
B3  
B3  
90°CTypical Activation  
VLP*  
VLP120UF  
VLP175UAF  
VLP210F  
VLP220F  
VLP270F  
VTP*  
1.20  
1.75  
2.10  
2.20  
2.70  
3.6  
3.9  
5.0  
5.3  
6.5  
16  
16  
16  
16  
16  
60  
60  
60  
60  
60  
1.6  
1.8  
1.8  
1.8  
2.5  
7. 0 0  
8.75  
5.0  
5.0  
5.0  
5.0  
5.0  
0.039  
0.023  
0.018  
0.017  
0.012  
0.067  
0.041  
0.030  
0.029  
0.018  
0.134  
0.082  
0.060  
0.058  
0.036  
B5  
B5  
B2  
B3  
B3  
10.50  
11.00  
13.50  
VTP110F  
1.10  
1.70  
1.70  
1.75  
1.75  
2.10  
2.10  
2.7  
3.4  
3.4  
3.6  
3.6  
4.7  
4.7  
16  
16  
16  
16  
16  
16  
16  
100  
100  
100  
100  
100  
100  
100  
1.3  
1.4  
1.4  
1.4  
1.4  
1.5  
1.5  
5.50  
8.50  
8.50  
8.75  
8.75  
10.00  
10.00  
5.0  
5.0  
5.0  
5.0  
5.0  
5.0  
5.0  
0.038  
0.030  
0.030  
0.029  
0.029  
0.018  
0.018  
0.070  
0.052  
0.052  
0.051  
0.051  
0.030  
0.030  
0.140  
0.105  
0.105  
0.102  
0.102  
0.060  
0.060  
B5  
B2  
B4  
B3  
B3  
B3  
B4  
VTP170F  
VTP170XSF  
VTP175F  
VTP175LF  
VTP210GF  
VTP210SF  
120°CTypical Activation  
MXP*  
MXP180  
1.80  
1.90  
2.50  
2.70  
3.10  
3.70  
5.2  
4.9  
6.2  
6.2  
9.0  
9.0  
6
6
6
6
6
6
50  
50  
50  
50  
50  
50  
1.0  
1.0  
1.0  
1.0  
1.3  
1.3  
9.00  
9.50  
5.0  
2.0  
2.0  
2.0  
5.0  
5.0  
0.007  
0.007  
0.006  
0.006  
0.003  
0.004  
0.014  
0.015  
0.016  
0.015  
0.012  
0.010  
0.024  
0.024  
0.028  
0.026  
0.018  
0.016  
B10  
B9  
MXP190BB  
MXP250K  
MXP270  
13.50  
13.50  
17.50  
18.50  
B10  
B10  
B10  
B10  
MXP310  
MXP370BD  
* Product electrical characteristics determined at 25°C.  
RoHS Compliant, ELV Compliant  
Specifications subject to change without notice. ©2016 Littelfuse, Inc.  
PolySwitch Resettable Devices  
Strap Battery Devices  
(Cont’d)  
Table B3 — Electrical Characteristics  
IH  
IT  
VMAX  
IMAX  
(A)  
PD MAX  
(W)  
MaxTime-to-trip  
RMIN  
RMAX  
R1MAX  
Figure for  
Dimension  
Part  
Number  
(A)  
(A)  
(VDC  
)
(A)  
(s)  
(Ω)  
(Ω)  
(Ω)  
120˚CTypical Activation  
MGP  
MGP450  
MGP500  
4.50  
5.00  
9.2  
9.2  
6
6
50  
50  
1.5  
1.5  
25.00  
25.00  
5.0  
5.0  
0.0025  
0.0025  
0.007  
0.013  
0.013  
B11  
B12  
0.0065  
125°CTypical Activation  
SRP  
SRP120F  
SRP175F  
SRP200F  
SRP350F  
SRP420F  
LR4  
1.20  
1.75  
2.00  
3.50  
4.20  
2.7  
3.8  
4.4  
6.3  
7. 6  
15  
15  
30  
30  
30  
100  
100  
100  
100  
100  
1.2  
1.5  
1.9  
2.5  
2.9  
6.00  
8.75  
5.0  
5.0  
4.0  
3.0  
6.0  
0.085  
0.050  
0.030  
0.017  
0.012  
0.160  
0.090  
0.060  
0.031  
0.024  
0.220  
0.120  
0.100  
0.050  
0.040  
B6  
B6  
B6  
B6  
B6  
10.00  
20.00  
20.00  
LR4-190F  
LR4-260F  
LR4-380F  
LR4-380XF  
LR4-450F  
LR4-550F  
LR4-600F  
LR4-600XF  
LR4-730F  
LR4-900F  
LR4-1300SSF  
1.90  
2.60  
3.80  
3.80  
4.50  
5.50  
6.00  
6.00  
7.30  
3.9  
5.8  
15  
15  
15  
15  
20  
20  
20  
20  
20  
20  
20  
100  
100  
100  
100  
100  
100  
100  
100  
100  
100  
100  
1.2  
2.5  
2.5  
2.5  
2.3  
2.8  
2.8  
2.8  
3.3  
3.8  
4.5  
9.5  
5.0  
5.0  
5.0  
5.0  
5.0  
5.0  
5.0  
5.0  
5.0  
5.0  
10.0  
0.0390  
0.0200  
0.0130  
0.0130  
0.0110  
0.0090  
0.0070  
0.0075  
0.0060  
0.0060  
0.0035  
0.0720  
0.0420  
0.0260  
0.0260  
0.0200  
0.0160  
0.0140  
0.0140  
0.0120  
0.0100  
0.0065  
0.102  
0.063  
0.037  
0.037  
0.028  
0.022  
0.019  
0.019  
0.015  
0.014  
0.009  
B7  
B7  
B7  
B7  
B7  
B7  
B7  
B7  
B7  
B7  
B8  
13.0  
19.0  
19.0  
22.5  
27.5  
30.0  
30.0  
30.0  
45.0  
50.0  
8.3  
8.3  
8.9  
10.5  
11.7  
11.7  
14.1  
16.7  
21.2  
9.00  
13.00  
* Product electrical characteristics determined at 25°C.  
Notes  
IH  
IT  
: Hold current: maximum current device will pass without interruption in 20°C still air unless otherwise specified.  
: Trip current: minimum current that will switch the device from low-resistance to high-resistance in 20°C still air unless otherwise specified.  
VMAX : Maximum voltage device can withstand without damage at rated current.  
IMAX : Maximum fault current device can withstand without damage at rated voltage.  
PD  
: Power dissipated from device when in the tripped state in 20°C still air unless otherwise specified.  
RMIN : Minimum resistance of device as supplied at 20°C unless otherwise specified.  
RMAX : Maximum resistance of device as supplied at 20°C unless otherwise specified.  
R1MAX : Maximum resistance, measured at 20°C unless otherwise specified, of device one hour after being tripped the first time.  
Figures B2-B12 — Dimension Figures  
Figure B2  
Figure B3  
Figure B4  
A
C
A
C
A
C
B
F
B
F
B
F
D
E
D
E
D
E
RoHS Compliant, ELV Compliant  
Specifications subject to change without notice. ©2016 Littelfuse, Inc.  
PolySwitch Resettable Devices  
Strap Battery Devices  
(Cont’d)  
Figures B2-B12 — Dimension Figures  
Figure B5  
Figure B6  
Figure B7  
A
C
C
A
A
C
B
B
B
F
F
F
D
E
D
E
D
E
Figure B8  
Figure B9  
Figure B10  
A
A
C
A
C
B
D
B
F
B
F
C
D
E
D
E
Figure B11  
Figure B12  
A
A
D
E
D
G
G
F
B
B
F
C
C
Table B4 — Dimensions in Millimeters (Inches)  
A
B
C
D
E
F
G
Part  
Number  
Figure  
Min  
Max  
Min  
Max  
Min  
Max  
Min  
Max  
Min  
Max  
Min  
Max  
Min  
Max  
85°CTypical Activation  
VLR  
VLR170F  
VLR175F  
VLR175LF  
VLR230F  
20.8  
23.2  
3.5  
3.9  
—
—
0.8  
(0.032)  
0.8  
4.5  
6.5  
4.5  
6.5  
2.4  
2.6  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
B3  
B3  
B3  
B3  
(0.832) (0.928)  
23.0 24.5  
(0.920) (0.980)  
29.3 31.7  
(1.172) (1.268)  
20.9 23.1  
(0.836) (0.924)  
(0.140) (0.156)  
2.9 3.3  
(0.116) (0.132)  
2.9 3.3  
(0.116) (0.132)  
4.9 5.3  
(0.196) (0.212)  
(0.180) (0.260)  
4.7 7. 2  
(0.188) (0.288)  
5.2 6.8  
(0.208) (0.272)  
4.1 5.8  
(0.164) (0.232)  
(0.180) (0.260)  
3.8 5.4  
(0.152) (0.216)  
10 12.5  
(0.400) (0.500)  
4.1 5.8  
(0.164) (0.232)  
(0.096) (0.104)  
2.4 2.6  
(0.096) (0.104)  
2.4 2.6  
(0.096) (0.104)  
3.9 4.1  
(0.156) (0.164)  
0.5  
(0.020) (0.032)  
—
—
—
—
0.8  
(0.032)  
0.8  
(0.032)  
90°CTypical Activation  
VLP  
VLP120UF  
VLP175UAF  
VLP210F  
10.9  
(0.430) (0.460)  
23.6 25.6  
(0.944) (1.024)  
15.4 17. 5  
(0.616) (0.700)  
21.1 23.3  
(0.844) (0.932)  
20.9 23.1  
(0.836) (0.924)  
11.8  
4.4  
(0.170) (0.180)  
2.7 2.9  
(0.108) (0.116)  
6.9 7. 3  
(0.276) (0.292)  
3.5 3.9  
(0.140) (0.156)  
4.9 5.3  
(0.196) (0.212)  
4.6  
—
—
0.7  
(0.028)  
0.7  
5.5  
(0.220) (0.260)  
7. 0 8.0  
(0.280) (0.320)  
4.0 6.2  
(0.160) (0.248)  
5.1 6.8  
(0.204) (0.272)  
4.1 5.8  
(0.164) (0.232)  
6.5  
1.65  
(0.065) (0.075)  
7. 0 8.0  
(0.280) (0.320)  
4.0 6.2  
(0.160) (0.248)  
5.1 6.8  
(0.204) (0.272)  
4.1 5.8  
(0.164) (0.232)  
1.9  
2.3  
(0.091) (0.098)  
2.3 2.5  
(0.092) (0.100)  
3.9 4.1  
(0.156) (0.164)  
2.9 3.1  
(0.116) (0.124)  
3.9 4.1  
(0.156) (0.164)  
2.5  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
B5  
B5  
B2  
B3  
B3  
—
—
(0.028)  
0.8  
0.6  
(0.024) (0.032)  
0.6 0.8  
(0.024) (0.032)  
0.6 0.8  
(0.024) (0.032)  
VLP220F  
VLP270F  
RoHS Compliant, ELV Compliant  
Specifications subject to change without notice. ©2016 Littelfuse, Inc.  
PolySwitch Resettable Devices  
Strap Battery Devices  
(Cont’d)  
Table B4 — Dimensions in Millimeters (Inches)  
A
B
C
D
E
F
G
Part  
Number  
Figure  
Min  
Max  
Min  
Max  
Min  
Max  
Min  
Max  
Min  
Max  
Min  
Max  
Min  
Max  
VTP  
VTP110F  
23.6  
25.6  
2.7  
2.9  
—
—
0.7  
(0.028)  
0.8  
7. 0  
8.0  
7. 0  
8.0  
2.3  
2.5  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
B5  
B2  
B4  
B3  
B3  
B3  
B4  
(0.944) (1.024)  
15.4 17. 5  
(0.616) (0.700)  
20.9 22.9  
(0.836) (0.916)  
21.2 23.2  
(0.848) (0.928)  
25.8 28.2  
(1.032) (1.128)  
20.9 23.1  
(0.836) (0.924)  
20.9 23.1  
(0.836) (0.924)  
(0.108) (0.116)  
7. 0 7. 4  
(0.280) (0.296)  
4.9 5.3  
(0.196) (0.212)  
3.5 3.9  
(0.140) (0.156)  
3.5 3.9  
(0.140) (0.156)  
4.9 5.3  
(0.196) (0.212)  
4.9 5.3  
(0.196) (0.212)  
(0.280) (0.320)  
4.0 6.2  
(0.160) (0.248)  
6.0 8.6  
(0.240) (0.344)  
4.6 6.6  
(0.184) (0.264)  
5.7 7. 3  
(0.228) (0.292)  
4.1 5.8  
(0.164) (0.232)  
4.1 5.8  
(0.164) (0.232)  
(0.280) (0.320)  
4.0 6.2  
(0.160) (0.248)  
6.0 8.6  
(0.240) (0.344)  
4.6 6.6  
(0.184) (0.264)  
8.7 10.3  
(0.348) (0.412)  
4.1 5.8  
(0.164) (0.232)  
4.1 5.8  
(0.164) (0.232)  
(0.092) (0.100)  
3.9 4.1  
(0.156) (0.164)  
3.9 4.1  
(0.156) (0.164)  
2.9 3.1  
(0.116) (0.124)  
2.4 2.6  
(0.096) (0.104)  
3.9 4.1  
(0.156) (0.164)  
3.9 4.1  
(0.156) (0.164)  
VTP170F  
0.5  
(0.020) (0.032)  
0.5 0.8  
(0.020) (0.032)  
VTP170XSF  
VTP175F  
—
—
—
—
—
—
0.6  
0.8  
(0.032)  
0.8  
VTP175LF  
VTP210GF  
VTP210SF  
(0.032)  
0.8  
(0.032)  
0.8  
(0.024) (0.032)  
120°CTypical Activation  
MXP  
MXP180  
9.4  
(0.37) (0.39)  
9.2 10.8  
10.0  
2.3  
(0.09) (0.10)  
2.96 3.26  
(0.12) (0.13)  
2.3 2.7  
(0.09) (0.11)  
2.3 2.7  
(0.09) (0.10)  
2.96 3.26  
(0.11) (0.13)  
2.96 3.26  
(0.11) (0.12)  
2.6  
0.7  
(0.02) (0.04)  
0.7 1.1  
(0.03) (0.04)  
0.7 1.1  
(0.03) (0.04)  
0.7 1.1  
(0.02) (0.04)  
0.65 0.95  
(0.03) (0.04)  
0.7 1.1  
(0.02) (0.04)  
1.1  
1.9  
(0.07) (0.08)  
1.6 3.1  
(0.06) (0.12)  
2.4 2.6  
(0.09) (0.10)  
2.1  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
B10  
B9  
MXP190BB  
MXP250K  
MXP270  
1.6  
3.1  
2.2  
2.4  
(0.36) (0.43)  
11.75 12.35  
(0.46) (0.49)  
(0.06) (0.12)  
(0.09) (0.10)  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
B10  
B9  
10.3  
(0.40) (0.45)  
14.5 16.5  
(0.57) (0.65)  
10.5 11.3  
(0.41) (0.44)  
11.5  
2.1  
(0.08)  
4.6  
—
—
—
—
—
—
2.1  
1.9  
2.1  
(0.08)  
4.6  
(0.07) (0.08)  
2.2 2.4  
(0.09) (0.10)  
2.2  
2.4  
(0.08) 0.09)  
MXP310  
B9  
(0.18)  
2.0  
(0.18)  
2.0  
MXP370BD  
B9  
(0.07)  
(0.07)  
120˚CTypical Activatio  
MGP  
MGP450  
13.0  
(0.51) (0.55)  
14.5 15.5  
(0.57) (0.61)  
14.0  
2.96  
(0.12) (0.13)  
2.96 3.26  
(0.12) (0.13)  
3.26  
—
—
—
—
0.95  
(0.04)  
0.95  
3.0  
(0.12)  
5.5  
—
—
7. 0  
3.0  
(0.12)  
2.0  
—
—
—
—
2.2  
(0.09) (0.09)  
2.3 2.5  
(0.09) (0.10)  
2.4  
—
—
—
—
B11  
B12  
MGP500  
3.95  
4.05  
(0.04)  
(0.22) (0.28)  
(0.08)  
(0.16) (0.16)  
125°CTypical Activation  
SRP  
SRP120F  
SRP175F  
SRP200F  
SRP350F  
SRP420F  
19.9  
(0.796) (0.884)  
20.9 23.1  
(0.836) (0.924)  
21.3 23.4  
(0.852) (0.936)  
28.4 31.8  
(1.136) (1.272)  
30.6 32.4  
(1.224) (1.296)  
22.1  
4.9  
(0.196) (0.208)  
4.9 5.2  
(0.196) (0.208)  
10.2 11.0  
(0.408) (0.440)  
13.0 13.5  
(0.520) (0.540)  
12.9 13.6  
(0.516) (0.544)  
5.2  
0.6  
1.0  
5.5  
(0.220) (0.300)  
4.1 5.5  
(0.164) (0.220)  
5.0 7. 6  
(0.200) (0.304)  
6.3 8.9  
(0.252) (0.356)  
5.0 7. 5  
(0.200) (0.300)  
7. 5  
5.5  
7. 5  
3.9  
(0.156) (0.164)  
3.9 4.1  
(0.156) (0.164)  
4.8 5.4  
(0.192) (0.216)  
6.0 6.6  
(0.240) (0.264)  
6.0 6.7  
(0.240) (0.268)  
4.1  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
B6  
B6  
B6  
B6  
B6  
(0.024) (0.040)  
0.6 1.0  
(0.024) (0.040)  
0.5 1.1  
(0.020) (0.044)  
0.5 1.1  
(0.020) (0.044)  
0.5 1.1  
(0.020) (0.044)  
(0.220) (0.300)  
4.1 5.5  
(0.164) (0.220)  
5.0 7. 6  
(0.200) (0.304)  
6.3 8.9  
(0.252) (0.356)  
5.0 7. 5  
(0.200) (0.300)  
RoHS Compliant, ELV Compliant  
Specifications subject to change without notice. ©2016 Littelfuse, Inc.  
PolySwitch Resettable Devices  
Strap Battery Devices  
(Cont’d)  
Table B4 — Dimensions in Millimeters (Inches)  
A
B
C
D
E
F
G
Part  
Number  
Figure  
Min  
Max  
Min  
Max  
Min  
Max  
Min  
Max  
Min  
Max  
Min  
Max  
Min  
Max  
LR4  
LR4-190F  
19.9  
22.1  
4.9  
5.5  
0.6  
1.0  
5.5  
7. 5  
5.5  
7. 5  
3.9  
4.1  
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
B7  
B7  
B7  
B7  
B7  
B7  
B7  
B7  
B7  
B7  
B8  
(0.796) (0.884)  
20.9 23.1  
(0.836) (0.924)  
24.0 26.0  
(0.960) (1.040)  
32.2 35.8  
(1.288) (1.432)  
24.0 26  
(0.960) (1.040)  
35.0 37.0  
(1.400) (1.480)  
24.0 26.0  
(0.960) (1.040)  
40.5 42.7  
(1.620) (1.708)  
27.1 29.1  
(1.084) (1.164)  
45.4 47.6  
(1.816) (1.904)  
61.5 66.5  
(2.460) (2.660)  
(0.196) (0.220)  
4.9 5.5  
(0.196) (0.220)  
6.9 7. 5  
(0.276) (0.300)  
4.9 5.5  
(0.196) (0.220)  
9.9 10.5  
(0.396) (0.420)  
6.9 7. 5  
(0.276) (0.300)  
13.9 14.5  
(0.556) (0.580)  
6.9 7. 5  
(0.276) (0.300)  
13.9 14.5  
(0.556) (0.580)  
7. 9 8.5  
(0.316) (0.340)  
9.4 10.0  
(0.376) (0.400)  
(0.024) (0.040)  
0.6 1.0  
(0.024) (0.040)  
0.6 1.0  
(0.024) (0.040)  
0.6 1.0  
(0.024) (0.040)  
0.6 1.0  
(0.024) (0.040)  
0.6 1.0  
(0.024) (0.040)  
0.6 1.0  
(0.024) (0.040)  
0.6 1.0  
(0.024) (0.040)  
0.6 1.0  
(0.024) (0.040)  
0.9 1.3  
(0.036) (0.052)  
0.9 1.3  
(0.036) (0.052)  
(0.220) (0.300)  
4.1 5.5  
(0.164) (0.220)  
4.1 5.5  
(0.164) (0.220)  
5.5 7. 5  
(0.220) (0.300)  
5.3 6.7  
(0.212) (0.268)  
5.3 6.7  
(0.212) (0.268)  
4.1 5.5  
(0.164) (0.220)  
5.2 6.8  
(0.208) (0.272)  
4.1 5.5  
(0.164) (0.220)  
4.6 6.2  
(0.184) (0.248)  
5.0 7. 5  
(0.200) (0.300)  
(0.220) (0.300)  
4.1 5.5  
(0.164) (0.220)  
4.1 5.5  
(0.164) (0.220)  
5.5 7. 5  
(0.220) (0.300)  
5.3 6.7  
(0.212) (0.268)  
5.3 6.7  
(0.212) (0.268)  
4.1 5.5  
(0.164) (0.220)  
5.2 6.8  
(0.208) (0.272)  
4.1 5.5  
(0.164) (0.220)  
4.6 6.2  
(0.184) (0.248)  
5.0 7. 5  
(0.156) (0.164)  
3.9 4.1  
(0.156) (0.164)  
4.9 5.1  
(0.196) (0.204)  
3.9 4.1  
(0.156) (0.164)  
5.9 6.1  
(0.236) (0.244)  
4.9 5.1  
(0.196) (0.204)  
5.9 6.1  
(0.236) (0.244)  
4.9 5.1  
(0.196) (0.204)  
5.9 6.1  
(0.236) (0.244)  
5.9 6.1  
(0.236) (0.244)  
5.9 6.1  
(0.236) (0.244)  
LR4-260F  
LR4-380F  
LR4-380XF  
LR4-450F  
LR4-550F  
LR4-600F  
LR4-600XF  
LR4-730F  
LR4-900F  
LR4-1300SSF  
(0.200) (0.300)  
Figures B13-B19 —TypicalTime-to-Trip Curve at 20°C  
VLR (data at 25°C)  
Figure B13  
A = VLR170F  
100  
B = VLR175F  
C = VLR230F  
C
10  
B
A
1
0.10  
0.01  
C
B
A
0.001  
1
10  
100  
Fault Current (A)  
RoHS Compliant, ELV Compliant  
Specifications subject to change without notice. ©2016 Littelfuse, Inc.  
PolySwitch Resettable Devices  
Strap Battery Devices  
(Cont’d)  
Figures B13-B19 —TypicalTime-to-Trip Curve at 20°C  
VLP (data at 25°C)  
Figure B14  
A = VLP120UF  
100  
B = VLP175UAF  
C
D
E
=
=
=
VLP210F  
VLP220F  
VLP270F  
E
10  
1
D
C
B
A
0.10  
E
D
C
0.01  
B
A
0.001  
0.0001  
1
10  
100  
Fault Current (A)  
VTP (data at 25°C)  
A = VTP110F  
B = VTP170F  
C = VTP175F  
D = VTP210GF  
Figure B15  
100  
D
10  
1
A
C
B
0.10  
0.01  
B
D
A
C
0.001  
1
10  
100  
Fault Current (A)  
MXP (data at 25°C)  
A = MXP180  
Figure B16  
10  
B = MXP190BB  
C = MXP250K  
D = MXP270  
F
E
D
C
B
A
1
0.10  
0.01  
E
F
=
=
MXP310  
MXP370BD  
F
E
D
C
B
A
0.001  
1
10  
100  
Fault Current (A)  
RoHS Compliant, ELV Compliant  
Specifications subject to change without notice. ©2016 Littelfuse, Inc.  
PolySwitch Resettable Devices  
Strap Battery Devices  
(Cont’d)  
Figures B13-B19 —TypicalTime-to-Trip Curve at 20°C  
MGP  
Figure B17  
A = MGP450  
100  
B = MGP500  
B
A
10  
1
B
A
0.1  
0.01  
1
10  
100  
Fault Current (A)  
SRP  
Figure B18  
A = SRP120F  
100  
B = SRP175F  
C = SRP200F  
D = SRP350F  
10  
E
E
=
SRP420F  
C
D
B
A
1
0.10  
0.01  
E
D
C
B
A
1
10  
100  
Fault Current (A)  
LR4  
Figure B19  
A = LR4-190F  
B = LR4-260F  
C = LR4-380F  
D = LR4-450F  
G
F
100  
E
H
I
B
D
C
A
10  
1
E
F
=
=
LR4-550F  
LR4-600F  
G
G = LR4-730F  
H = LR4-900F  
F
E
D
I
I
=
LR4-1300SSF  
C
H
B
0.10  
A
0.01  
1
10  
100  
Fault Current (A)  
RoHS Compliant, ELV Compliant  
Specifications subject to change without notice. ©2016 Littelfuse, Inc.  
PolySwitch Resettable Devices  
Strap Battery Devices  
Table B5 — Physical Characteristics and Environmental Specifications  
VLR  
Physical Characteristics  
Lead Material  
0.125mm Nominal Thickness, Quarter-hard Nickel  
Polyester  
Tape Material  
Environmental Specifications  
Test  
Conditions  
Resistance Change  
5ꢀ typ  
Passive Aging  
-40°C, 1000 hrs  
60°C, 1000 hrs  
20ꢀ typ  
Humidity Aging  
Thermal Shock  
Vibration  
60°C/95ꢀ RH, 1000 hrs  
85°C, -40°C (10 Times)  
MIL-STD-883D, Method 2026  
30ꢀ typ  
5ꢀ typ  
No Change  
VLP and VTP  
Physical Characteristics  
Lead Material  
0.125mm Nominal Thickness, Quarter-hard Nickel  
Polyester  
Tape Material  
Environmental Specifications  
Test  
Conditions  
Resistance Change  
5ꢀ typ  
Passive Aging  
-40°C, 1000 hrs  
60°C, 1000 hrs  
10ꢀ typ  
Humidity Aging  
Thermal Shock  
Vibration  
60°C/95ꢀ RH, 1000 hrs  
85°C, -40°C (10 Times)  
MIL-STD-883D, Method 2026  
10ꢀ typ  
5ꢀ typ  
No Change  
MXP and MGP  
Physical Characteristics  
Lead Material  
0.1mm Nominal Thickness,Half-hard Nickel  
Epoxy  
Coating Material  
Environmental Specifications  
Test  
Conditions  
Resistance Change  
5ꢀ typ  
Passive Aging  
-40°C, 1000 hrs  
60°C, 1000 hrs  
20ꢀ typ  
Humidity Aging  
Thermal Shock  
Vibration  
60°C/95ꢀ RH, 1000 hrs  
85°C, -40°C (10 Times)  
MIL-STD-883D, Method 2026  
30ꢀ typ  
5ꢀ typ  
No Change  
SRP  
Physical Characteristics  
Lead Material  
0.125mm Nominal Thickness, Quarter-hard Nickel  
Polyester  
Tape Material  
Environmental Specifications  
Test  
Conditions  
Resistance Change  
10ꢀ typ  
Passive Aging  
Humidity Aging  
Vibration  
70°C, 1000 hrs  
85°C/85ꢀ RH, 7 Days  
MIL-STD-883C, Test Condition A  
5ꢀ typ  
No Change  
Note: Storage conditions: 40°C max., 70ꢀ RH max.; devices should remain in original sealed bags prior to use.  
Devices may not meet specified values if these storage conditions are exceeded.  
RoHS Compliant, ELV Compliant  
Specifications subject to change without notice. ©2016 Littelfuse, Inc.  
PolySwitch Resettable Devices  
Strap Battery Devices  
(Cont’d)  
Table B5 — Physical Characteristics and Environmental Specifications  
LR4  
Physical Characteristics  
Lead Material  
0.125mm Nominal Thickness, Quarter-hard Nickel  
Polyester  
Tape Material  
Environmental Specifications  
Test  
Conditions  
Resistance Change  
10ꢀ typ  
Passive Aging  
Humidity Aging  
Vibration  
70°C, 1000 hrs  
85°C/85ꢀ RH, 7 Days  
MIL-STD-883D, Method 2026  
5ꢀ typ  
No Change  
Note: Storage conditions: 40°C max., 70ꢀ RH max.; devices should remain in original sealed bags prior to use.  
Devices may not meet specified values if these storage conditions are exceeded.  
Table B6 — Packaging and Marking Information/Agency Recognition  
Part  
Number  
Bag  
Quantity  
Tape and Reel  
Quantity  
Standard Package  
Quantity  
Part Marking  
Agency Recognition  
85°CTypical Activation  
VLR  
VLR170F  
VLR175F  
VLR175LF  
VLR230F  
1,000  
1,000  
1,000  
1,000  
—
—
—
—
10,000  
10,000  
10,000  
10,000  
R17  
R1X  
R1X  
R23  
UL, CSA,TÜV  
UL, CSA,TÜV  
UL, CSA,TÜV  
UL, CSA,TÜV  
90°CTypical Activation  
VLP  
VLP120UF  
VLP175UAF  
VLP210F  
VLP220F  
VLP270F  
VTP  
1,000  
1,000  
1,000  
1,000  
1,000  
—
—
—
—
—
10,000  
10,000  
10,000  
10,000  
10,000  
—
UL, CSA, TÜV  
UL, CSA, TÜV  
UL, CSA, TÜV  
UL, CSA, TÜV  
UL, CSA, TÜV  
—
W21  
W22  
W27  
VTP110F  
VTP170F  
VTP170XSF  
VTP175F  
VTP175LF  
VTP210GF  
VTP210SF  
1,000  
1,000  
1,000  
1,000  
1,000  
1,000  
1,000  
—
—
—
—
—
—
—
10,000  
10,000  
10,000  
10,000  
10,000  
10,000  
10,000  
—
UL, CSA, TÜV  
UL, CSA, TÜV  
UL, CSA, TÜV  
UL, CSA, TÜV  
UL, CSA, TÜV  
UL, CSA, TÜV  
UL, CSA, TÜV  
V17  
V17  
V1X  
V1X  
V21  
V21  
120°CTypical Activation  
MXP  
MXP180  
2,000  
2,000  
2,000  
2,000  
2,000  
2,000  
—
—
—
—
—
—
48,000  
48,000  
48,000  
48,000  
48,000  
48,000  
—
—
—
—
—
—
UL, CSA, TÜV  
UL, CSA, TÜV  
UL, CSA, TÜV  
UL  
MXP190BB  
MXP250K  
MXP270  
MXP310  
UL  
MXP370BD  
UL, CSA, TÜV  
120˚CTypical Activation  
MGP  
MGP450  
MGP500  
2,000  
2,000  
—
—
48,000  
48,000  
—
—
—
UL, TÜV  
RoHS Compliant, ELV Compliant  
Specifications subject to change without notice. ©2016 Littelfuse, Inc.  
PolySwitch Resettable Devices  
Strap Battery Devices  
(Cont’d)  
Table B6 — Packaging and Marking Information/Agency Recognition  
Part  
Number  
Bag  
Quantity  
Tape and Reel  
Quantity  
Standard Package  
Quantity  
Part Marking  
Agency Recognition  
125°CTypical Activation  
SRP  
SRP120F  
SRP175F  
SRP200F  
SRP350F  
SRP420F  
LR4  
1,000  
2,000  
1,000  
500  
—
—
—
—
—
10,000  
10,000  
10,000  
10,000  
10,000  
120  
175  
200  
350  
420  
UL, CSA, TÜV  
UL, CSA, TÜV  
UL, CSA, TÜV  
UL, CSA, TÜV  
UL, CSA, TÜV  
500  
LR4-190F  
LR4-260F  
LR4-380F  
LR4-380XF  
LR4-450F  
LR4-550F  
LR4-600F  
LR4-600XF  
LR4-730F  
LR4-900F  
LR4-1300SSF  
2,000  
1,000  
1,000  
1,000  
1,000  
1,000  
1,000  
1,000  
1,000  
500  
—
—
—
—
—
—
—
—
—
—
—
10,000  
10,000  
10,000  
10,000  
10,000  
10,000  
10,000  
10,000  
10,000  
10,000  
10,000  
E19  
E26  
E38  
E38  
E45  
E55  
E60  
E60  
E73  
E90  
EX3  
UL, CSA, TÜV  
UL, CSA, TÜV  
UL, CSA, TÜV  
UL, CSA, TÜV  
UL, CSA, TÜV  
UL, CSA, TÜV  
UL, CSA, TÜV  
UL, CSA, TÜV  
UL, CSA, TÜV  
UL, CSA, TÜV  
UL, CSA, TÜV  
250  
Agency Recognition  
UL  
File # E74889  
File # 78165C  
CSA  
TÜV  
Certificate Number Available on Request  
Installation Guidelines for the Strap Family  
•
PPTC devices operate by thermal expansion of the conductive polymer. If devices are placed under pressure or installed in spaces that would  
prevent thermal expansion, they may not properly protect against damage caused by fault conditions. Designs must be selected in such a  
manner that adequate space is maintained over the life of the product.  
•
Twisting, bending, or placing the PPTC device in tension will decrease the ability of the device to protect against damage caused by electrical  
faults. No residual force should remain on device after installation. Mechanical damage to the PPTC device may affect device performance and  
should be avoided.  
•
•
Chemical contamination of PPTC devices should be avoided. Certain greases, solvents, hydraulic fluids, fuels, industrial cleaning agents, volatile  
components of adhesives, silicones, and electrolytes can have an adverse effect on device performance.  
PPTC strap devices are intended to be resistance welded to battery cells or to pack interconnect straps, yet some precautions must be taken  
when doing so. In order for the PPTC device to exhibit its specified performance, weld placement should be a minimum of 2mm from the edge  
of the PPTC device, weld splatter must not touch the PPTC device, and welding conditions must not heat the PPTC device above its maximum  
operating temperature.  
•
•
•
PPTC strap devices are not intended for applications where reflow onto flex circuits or rigid circuit boards is required.  
The polyester tape on PPTC strap devices is intended for marking and identification purposes only, not for electrical insulation.  
The coating on MXP and MGP devices is intended to prevent oxidization/aging of the devices. Damaging the coating or causing the coating to  
delaminate can have negative effects on device performance and should be avoided.  
•
MXP and MGP devices have a small PPTC chip size and therefore have weaker peel strength between the polymer and Ni-foil of the chip.  
Excessive mechanical force to the device may cause delamination of Ni-foil from the polymer.  
RoHS Compliant, ELV Compliant  
Specifications subject to change without notice. ©2016 Littelfuse, Inc.  
PolySwitch Resettable Devices  
Strap Battery Devices  
Part Numbering System  
VTP 210 SF  
Modifier  
B, BB = Modified Resistance Window  
D
F
G
L
= Short Leaded Strap  
= Lead-free Version  
= Global Design (Standard Product)  
= Long Lead or Leads  
= Slit Lead  
S
SS  
U
X
= Both Leads Slit  
= Untaped  
= Rotated Chip  
Hold Current Indicator  
Product Series  
Warning :  
• Users should independently evaluate the suitability of and test each product selected for their own application.  
• Operation beyond the maximum ratings or improper use may result in device damage and possible electrical arcing and flame.  
• These devices are intended for protection against damage caused by occasional overcurrent or overtemperature fault conditions and should  
not be used when repeated fault conditions or prolonged trip events are anticipated.  
• Contamination of the PPTC material with certain silicone-based oils or some aggressive solvents can adversely impact the performance of the devices.  
• Device performance can be impacted negatively if devices are handled in a manner inconsistent with recommended electronic, thermal, and  
mechanical procedures for electronic components.  
• PPTC devices are not recommended for installation in applications where the device is constrained such that its PTC properties are inhibited,  
for example in rigid potting materials or in rigid housings, which lack adequate clearance to accommodate device expansion.  
• Operation in circuits with a large inductance can generate a circuit voltage (Ldi/dt) above the rated voltage of the device.  
Notice:  
Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own  
applications. Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, military, aerospace, medical, life-saving, life-  
sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the  
product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by  
Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims  
or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse  
products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse.  
RoHS Compliant, ELV Compliant  
Specifications subject to change without notice. ©2016 Littelfuse, Inc.  
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