SONY 1T404A

1T404A
Variable Capacitance Diode
Description
The 1T404A 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
0.75Ω Max. (f = 470MHz)
• Large capacitance ratio 11.5 Typ. (C2/C25)
• Small leakage current
10nA Max. (VR = 28V)
• Capacitance deviation in a matching group within 2%
Applications
Electronic tuning of wide-band CATV tuners
M-290
Absolute Maximum Ratings (Ta = 25°C)
• Reverse voltage
VR
34
• Operating temperature Topr
–20 to +75
• Storage temperature
Tstg –65 to +150
V
°C
°C
Structure
Silicon epitaxial planar type diode
Electrical Characteristics
Item
(Ta = 25°C)
Symbol
Conditions
Reverse voltage
VR
IR = 1µA
Reverse current
IR
VR = 28V
C2
VR = 2V, f = 1MHz
C25
VR = 25V, f = 1MHz
Diode capacitance
Capacitance ratio
Min.
Typ. Max. Unit
34.0
V
10.0
nA
29.5
33.5
pF
2.60
2.90
pF
C2/C25
11.0 11.5
C25/C28
1.03
Series resistance
rs
CD = 14pF, f = 470MHz
0.75
Ω
Capacitance deviation in a matching group
∆C
VR = 2 to 25V, f = 1MHz
2.0
%
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–
E99805-PS
1T404A
Diode capacitance vs. Reverse voltage
Reverse current vs. Ambient temperature
100
VR = 28V
Ta = 25°C
50
20
IR – Reverse current [pA]
C – Diode capacitance [pF]
100
10
5
10
2
1
1
2
5
10
20
50
100
VR – Reverse voltage [V]
1
–20
0
20
40
60
80
Ta – Ambient temperature [°C]
Forward voltage vs. Ambient temperature
Reverse voltage vs. Ambient temperature
50
IF = 1mA
VR – Reverse voltage [V]
VF – Forward voltage [V]
0.80
0.70
0.60
0.50
–20
0
20
40
60
IR = 10µA
45
40
35
–20
80
Ta – Ambient temperature [°C]
0
20
40
60
Ta – Ambient temperature [°C]
–2–
80
1T404A
Diode capacitance vs. Ambient temperature
1.03
C (Ta)/C (25°C) – Diode capacitance
VR = 1V
1.02
VR = 2V
VR = 7V
1.01
VR = 25V
VR = 15V
1.00
0.99
0.98
–20
0
20
40
60
80
Ta – Ambient current [°C]
Temperature coefficient of diode capacitance
Reverse current vs. Reverse voltage
100
Ta = 80°C
IR – Reverse current [pA]
Ta = 60°C
10
Temperature coefficient [ppm/°C]
1000
500
200
100
Ta = 25°C
50
1
1
2
5
10
VR – Reverse voltage [V]
0.1
1
3
10
30
VR – Reverse voltage [V]
–3–
20
50
1T404A
Package Outline
Unit: mm
0.2 M
A
M-290
0.2 ± 0.05
10° MAX
1.7 ± 0.1
1.3 ± 0.1
A
0.8 ± 0.1
c
b
10° MAX
0.7 ± 0.1
BASE METAL WITH PLATING
c
0.11 ± 0.005
+ 0.05
0.11 –
0.01
b
0.3 ± 0.025
0.05
0.3 –+ 0.02
PACKAGE MATERIAL
EPOXY RESIN
LEAD TREATMENT
SOLDER PLATING
EIAJ CODE
LEAD MATERIAL
COPPER
JEDEC CODE
PACKAGE WEIGHT
0.002g
SONY CODE
M-290
Marking
1
S4
2
–4–
1: Cathode
2: Anode