1T409
Variable Capacitance Diode
Description
M-290
The 1T409 is a variable capacitance diode
designed for UHF-band VCO using a super-small-
miniature flat package (SSVC).
Features
• Super-small-miniature flat package
• Low series resistance: 0.4 Ω Max. (f=470 MHz)
• Large capacitance ratio: 2.5 Typ.
(C2/C10)
• Small leakage current: 3 nA Max. (VR=15 V)
Absolute Maximum Ratings (Ta=25 °C)
• Reverse voltage
• Operating temperature Topr
• Storage temperature
VR
15
V
Applications
–35 to +85
°C
• UHF-band VCO
Tstg –65 to +150 °C
• Local oscillator for cordless telephone
• Local oscillator for cellular equipment
Structure
Silicon epitaxial planar type diode
Electrical Characteristics
(Ta=25 °C)
Item
Symbol
Conditions
VR=15 V
Min.
Typ.
Max.
Unit
Reverse current
Diode capacitance
IR
C2
3
nA
pF
pF
VR=2 V, f=1 MHz
VR=10 V, f=1 MHz
14.26
5.46
2.2
15.96
6.46
C10
C2/C10
rs
Capacitance ratio
Series resistance
2.5
0.3
VR=5V, f=470 MHz
0.4
Ω
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
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E96144A98-TE
