SONY 1T387

1T387
Variable Capacitance Diode
Description
The 1T387 is a variable capacitance diode
designed for electronic tuning of BS and CS tuners
using a super miniature package (SMVC).
M-235
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
V
• Peak reverse voltage
VRM
35
V
(RL ≥ 10kΩ)
• Operating temperature Topr
–20 to +75
°C
• Storage temperature
Tstg –65 to +150
°C
Applications
Electronic tuning of BS and CS tuners
Structure
Silicon epitaxial planar type diode
Electrical Characteristics
Item
(Ta = 25°C)
Symbol
Conditions
Reverse voltage
VR
IR = 1µA
Reverse current
IR
VR = 25V
C1
VR = 1V, f = 1MHz
C25
VR = 25V, f = 1MHz
Diode capacitance
Capacitance ratio
C1/C25
Series resistance
rs
VR = 5V, f = 470MHz
Capacitance deviation in a matching group
∆C
VR = 1 to 25V, f = 1MHz
Min.
Typ.
Max.
30.0
Unit
V
10.0
nA
7.84
9.44
pF
0.54
0.64
pF
1.50
Ω
6.0
%
12.2
14.6
1.30
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–
E00421-PS
1T387
Diode capacitance vs. Reverse voltage
Reverse current vs. Ambient temperature
10
1000
VR = 25V
IR – Reverse current [pA]
C – Diode capacitance [pF]
5
2
1
0.5
100
0.2
0.1
1
10
5
2
20
10
–20
50
VR – Reverse voltage [V]
Forward voltage vs. Ambient temperature
40
60
80
Reverse voltage vs. Ambient temperature
45
VR – Reverse voltage [V]
VF – Forward voltage [V]
20
Ta – Ambient temperature [°C]
0.90
IF = 1mA
0. 80
0.70
0.60
–20
0
0
20
40
60
IR = 10µA
40
35
30
–20
80
Ta – Ambient temperature [°C]
0
20
40
60
Ta – Ambient temperature [°C]
–2–
80
1T387
Diode capacitance vs. Ambient temperature
Reverse current vs. Reverse voltage
100
1.03
1.02
VR = 2V
1.01
VR = 7V
VR = 25V
VR = 15V
IR – Reverse current [pA]
C (Ta)/C (25°C) – Diode capacitance
VR = 1V
1.00
0.99
0.98
–20
0
20
40
60
10
Ta = 80°C
Ta = 60°C
1
80
Ta – Ambient temperature [°C]
Ta = 25°C
0.1
1
Temperature coefficient [ppm/°C]
Temperature coefficient of diode capacitance
500
200
100
50
30
2
5
10
20
10
30
VR – Reverse voltage [V]
1000
1
3
50
VR – Reverse voltage [V]
–3–
1T387
Package Outline
Unit: mm
AAA
AAA
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
PACKAGE WEIGHT
0.1g
Marking
CATHODE MARK
2
87
B
Note
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.)
1
–4–
Sony Corporation