Sony 1T403 Datasheet

Variable Capacitance Diode

Description

The 1T403 is a variable capacitance diode
designed for electronic tuning of VHF TV tuners and
CATV tuners using a super-small-miniature flat
package (SSVC).

Features

• Super-small-miniature flat package

• Low series resistance: 0.8 Ω Max. (f=470 MHz)

• Large capacitance ratio: 15.0 Typ. (C1/C28)

• Small leakage current: 10 nA Max. (VR=28 V)

• Capacitance deviation in a matching group:

within 2 %

Applications

Electronic tuning of TV and CATV tuners

1T403

M-290

Absolute Maximum Ratings (Ta=25 °C)

• Reverse voltage VR 30 V

• Peak reverse voltage VRM 35 V

(RL≥10 kΩ)

• Operating temperature Topr –20 to +75 °C

• Storage temperature Tstg –65 to +150 °C

Structure

Silicon epitaxial planar type diode

Electrical Characteristics (Ta=25 °C)

Item
Reverse current
Diode capacitance
Capacitance ratio

Series resistance
Capacitance
deviation in a
matching group

Symbol

IR

C1

C28

C1/C28

rs

∆C

Conditions

VR=28 V
VR=1 V, f=1 MHz
VR=28 V, f=1 MHz

CD=14 pF, f=470 MHz

VR=1 to 28 V, f=1 MHz

Min.

34.61

2.321

13.5

Typ.

15.0

0.75

Max.

10

42.31

2.714

0.80

2

Unit

nA
pF
pF

Ω

%

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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E95916-TE

1T403

Diode capacitance vs. Reverse voltage

100

50

20

10

5

C-Diode capacitance (pF)

2

1

12 51020 50

R-Reverse voltage (V)

V

Ta=25°C

Reverse current vs. Ambient temperature

VR=28V

100

10

-Reverse current (pA)

R

I

1

–20 0 20 40 60 80

Ta-Ambient temperature (°C)

0.80

Forward voltage vs. Ambient temperature

0.70

0.60

-Forward voltage (V)

F

V

0.50
–20 0 20 40 60 80

Ta-Ambient temperature (°C)

IF=1mA

45

Reverse voltage vs. Ambient temperature

40

35

-Reverse voltage (V)

R

V

30

–20 0 20 40 60

Ta-Ambient temperature (°C)

IR=10µA

80

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