1T387
Variable Capacitance Diode
Description
M-235
The 1T387 is a variable capacitance diode
designed for electronic tuning of BS and CS tuners
using a super miniature package (SMVC).
Features
• Super miniature package
• Low series resistance: 1.5Ω Max. (f = 470MHz)
• Large capacitance ratio: 14.6 Typ.
(C1/C25)
• Small leakage current: 10nA Max. (VR = 25V)
• Capacitance deviation in a matching group: within 6%
Absolute Maximum Ratings (Ta = 25°C)
• Reverse voltage
VR
30
35
V
V
• Peak reverse voltage
VRM
Applications
(RL ≥ 10kΩ)
Electronic tuning of BS and CS tuners
• Operating temperature Topr
–20 to +75
°C
°C
• Storage temperature
Tstg –65 to +150
Structure
Silicon epitaxial planar type diode
Electrical Characteristics
(Ta = 25°C)
Item
Symbol
VR
Conditions
IR = 1µA
Min. Typ. Max. Unit
Reverse voltage
Reverse current
30.0
V
IR
VR = 25V
10.0
9.44
0.64
nA
pF
pF
C1
VR = 1V, f = 1MHz
VR = 25V, f = 1MHz
7.84
Diode capacitance
C25
0.54
Capacitance ratio
Series resistance
C1/C25
rs
12.2 14.6
VR = 5V, f = 470MHz
1.30 1.50
6.0
Ω
Capacitance deviation in a matching group ∆C
VR = 1 to 25V, f = 1MHz
%
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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