SONY 1T379

1T379
Silicon Variable Capacitance Diode for Electronic Tuning of BS and CS Tuners
Description
The 1T379 is a variable capacitance diode
designed for the electronic tuning of BS and CS
tuners, and it has a super miniature package.
Features
• Super miniature package
• Small series resistance 1.50 Ω Max. (f=470 MHz)
• Large capacitance ratio 12.0
Typ. (C1/C25)
• Small capacitance
0.60 pF Max. (VR=25 V)
Structure
Silicon epitaxial planar-type diode
M-235
Absolute Maximum Ratings (Ta=25 °C)
• Reverse voltage
VR
30
V
• Maximum reverse voltage VRM
35
V
(RL≥10 kΩ)
• Operating temperature
Topr –20 to +75
°C
• Storage temperature
Tstg –65 to +150 °C
Electrical Characteristics
Item
Reverse current
Reverse voltage
Diode capacitance
Capacitance ratio
Series resistance
Capacitance deviation in a
matching group
(Ta=25 °C)
Symbol
IR
VR
C1
C25
C1/C25
rs
∆C
Conditions
Min.
VR=25 V
IR=1 µA
VR=1 V, f=1 MHz
VR=25 V, f=1 MHz
f=1 MHz
VR=5 V, f=470 MHz
30
6.0
0.5
10.0
VR=1 to 25 V, f=1 MHz
Typ.
Max.
10
7.2
0.6
Unit
nA
V
pF
pF
1.50
Ω
6
%
12.0
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—
E94205B82-TE
Thermal coefficient of diode capacitance (ppm/°C)
1T379
Diode capacitance vs. Reverse voltage
f=1MHz Ta=25°C
C-Diode capacitance (pF)
10.0
1.0
0.1
1
10
Thermal coefficient of diode capacitance
1000
100
50
1
10
100
VR-Reverse voltage (V)
100
VR-Reverse voltage
Forward voltage vs. Ambient temperature
Diode capacitance vs. Ambient temperature
f=1MHz
0.90
C (25°C)
C (Ta)
Diode capacitance
VR=1V
1.02
VR=2V
1.01
VR=7V
VR=15V
VR=25V
VF-Forward voltage (V)
1.03
IF=1mA
0.86
0.82
0.78
0.74
0.70
1.00
-20
0
20
40
Ta-Ambient temperature (°C)
0.99
0.98
-20
0
20
40
60
80
Ta-Ambient temperature (°C)
—2—
60
80
1T379
Reverse voltage vs. Ambient temperature
VR-Reverse voltage (V)
44
IR=10µA
42
40
38
36
34
-20
0
20
40
60
80
Ta-Ambient temperature (°C)
Reverse current vs. Ambient temperature
Reverse current vs. Reverse voltage
VR=28V
100
100
Ta=80°C
Ta=60°C
10
IR-Reverse current (pA)
IR-Reverse current (pA)
10
1.0
Ta=25°C
1.0
0.1
0.1
-20
0
20
40
60
80
Ta-Ambient temperature (°C)
1
10
VR-Reverse voltage (V)
—3—
100
1T379
Package Outline
Unit : mm
AA AA
M-235
+ 0.2
∗1.25 – 0.1
∗0.9 ± 0.1
+ 0.1
0.3 – 0.05
0.2
2.5 ± 0.2
∗1.7 ± 0.1
2
1
+ 0.1
0.3 – 0.05
0 ± 0.05
+ 0.1
0.11 – 0.06
0° to 10°
NOTE: Dimension “∗” does not include mold protrusion.
SONY CODE
M-235
EIAJ CODE
JEDEC CODE
Marking
PACKAGE WEIGHT
CATHODE MARK
0.1g
2
79
B
1
—4—
Notes
1) B:Lot No.(Year and Month of manufacture)
Year;Last one digit
Month;A,B,C(for Oct. to Dec.)
1 to 9(for Jan.to Sept.)