1T404
Variable Capacitance Diode
Description
M-290
The 1T404 is a variable capacitance diode
designed for electronic tuning of wide-band CATV
tuners using a super-small-miniature flat package
(SSVC).
Features
• Super-small-miniature flat package
• Low series resistance: 0.75 Ω Max. (f=470 MHz)
• Large capacitance ratio: 11.5 Typ.
(C2/C25)
Absolute Maximum Ratings (Ta=25 °C)
• Reverse voltage 34
• Operating temperature Topr –20 to +75 °C
• Storage temperature Tstg –65 to +150 °C
• Small leakage current: 10 nA Max. (VR=28 V)
• Capacitance deviation in a matching group:
within 2 %
VR
V
Applications
Electronic tuning of wide-band CATV tuners
Structure
Silicon epitaxial planar type diode
Electrical Characteristics
(Ta=25 °C)
Item
Symbol
Conditions
VR=28 V
Min.
Typ.
11.5
Max.
Unit
Reverse current
Diode capacitance
IR
C2
10
nA
pF
pF
VR=2 V, f=1 MHz
VR=25 V, f=1 MHz
29.36
2.49
11.0
34.26
2.89
C25
C2/C25
rs
Capacitance ratio
Series resistance
Capacitance
CD=14 pF, f=470 MHz
VR=2 to 25 V, f=1 MHz
0.75
2
Ω
deviation in a
∆C
%
matching group
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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E95917-TE
