1T378A Datasheet, PDF (1/4 Pages) Sony Corporation – Silicon Variable Capacitance Diode

Variable Capacitance Diode
1T378A
Description
The 1T378A is a variable capacitance diode
designed for electronic tuning of wide-band CATV
tuners, and the super miniature package allows the
tuner miniaturization.
High capacitance ratio (C25/C28) is improved to
support guard band.
M-235
Features
• Super miniature package
• Low series resistance 0.85 Ω Max. (f=470 MHz)
• Large capacitance ratio 12.5 Typ. (C2/C25)
1.03 Min. (C25/C28)
• Small leakage current 10 nA Max. (VR=28 V)
• Capacitance deviation within 2 %
Absolute Maximum Ratings (Ta=25 °C)
• Reverse voltage
VR
34
V
• Operating temperature Topr –20 to +75 °C
• Storage temperature Tstg –65 to +150 °C
Applications
Electronic tuning of VHF band and wide-band
CATV tuners
Structure
Silicon epitaxial planar type diode
Electrical Characteristics
Item
Reverse current
Reverse voltage
Diode capacitance
Capacitance ratio
Series resistance
Capacitance deviation in a
matching group
Symbol
IR
VR
C2
C25
C2/C25
C25/C28
rs
Conditions
VR=28 V
IR=1 µA
VR=2 V, f=1 MHz
VR=25 V, f=1 MHz
CD=14 pF, f=470 MHz
∆C VR=2 to 25 V, f=1 MHz
(Ta=25 °C)
Min. Typ. Max. Unit
10
nA
34
V
33.0
39.0 pF
2.57
3.00 pF
12.0 12.5
1.03
0.85
Ω
2
%
The continuous 20 pieces of ∆C are guaranteed.
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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E97108A82-TE