1T399
Variable Capacitance Diode
Description
The 1T399 is a variable capacitance diode
designed for the electronic tuning of wide-band
CATV tuners, and it has a super miniature package.
Features
•
Super miniature package
•
Small series resistance 0.75
Ω
Max. (f=470 MHz)
•
Large capacitance ratio 11.7 Typ. (C
2
/C
25
)
18.0
Typ. (C
1
/C
28
)
•
Small leak current
10 nA Max. (V
R
=28 V)
•
Capacitance deviation in a matching group:
within 2 %
Applications
Electronic tuning of wide-band CATV tuners
Structure
Silicon epitaxial planar-type diode
Absolute Maximum Ratings
(Ta=25 °C)
•
Reverse voltage
•
Operating temperature
•
Storage temperature
V
R
Topr
Tstg
34
–20 to +75
–65 to +150
V
°C
°C
M-235
Electrical Characteristics
Item
Reverse current
Diode capacitance
Capacitance ratio
Series resistance
Capacitance deviation in a
matching group
Symbol
I
R
C
2
C
25
C
2
/C
25
C
25
/C
28
rs
∆C
Conditions
V
R
=28 V
V
R
=2 V, f=1 MHz
V
R
=25 V, f=1 MHz
Min.
29.50
2.53
11.0
1.03
Typ.
Max.
10
35.50
2.93
(Ta=25 °C)
Unit
nA
pF
pF
11.7
0.75
2
Ω
%
C
D
=14 pF, f=470 MHz
V
R
=2 to 25 V, f=1 MHz
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.
—1—
E97454A82-TE
SONY [ SONY CORPORATION ]
