Sony 1T407 Datasheet

Variable Capacitance Diode

Description

The 1T407 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: 1.1 Ω Max. (f=470 MHz)

• Large capacitance ratio: 15.5 Typ. (C2/C25)

21.5 Min. (C1/C28)

1.03 Min. (C25/C28)

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

• Capacitance deviation in a matching group:

within 2 %

1T407

M-290

Absolute Maximum Ratings (Ta=25 °C)

• Reverse voltage VR 34 V

• Operating temperature Topr –20 to +75 °C

• Storage temperature Tstg –65 to +150 °C

Applications

Electronic tuning of wide-band CATV tuners

Structure

Silicon epitaxial planar type diode

Electrical Characteristics (Ta=25 °C)

Item

Reverse current
Reverse voltage

Diode capacitance
Capacitance ratio

Series resistance
Capacitance
deviation in a
matching group

Symbol

IR
VR
C2

C25
C2/C25
C1/C28

C25/C/28

rs

∆C

Conditions

VR=28 V
IR=1 µA
VR=2 V, f=1 MHz
VR=25 V, f=1 MHz

CD=14 pF, f=470 MHz

VR=1 to 28 V, f= MHz

Min.

34

42.86

2.56

14.5

21.5

1.03

Typ.

15.5

Max.

10

50.96

2.99

1.1

2

Unit

nA

V
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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E95920-TE

1T407

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

IR-Reverse current (pA)

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

50

Reverse voltage vs. Ambient temperature

45

40

-Reverse voltage (V)

R

V

35

–20 0 20 40 60 80

Ta-Ambient temperature (°C)

IR=10µ

A

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