Sony 1T399 Datasheet

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E97454A82-TE

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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.

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

Description

The 1T399 is a variable capacitance diode
designed for the electronic tuning of wide-band
CATV tuners, and it has a super miniature package.

Features

• Super miniature package

• Small series resistance 0.75 Ω Max. (f=470 MHz)

• Large capacitance ratio 11.7 Typ. (C2/C25)

18.0 Typ. (C1/C28)

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

• Capacitance deviation in a matching group:

within 2 %

Applications

Electronic tuning of wide-band CATV tuners

Structure

Silicon epitaxial planar-type diode

Variable Capacitance Diode

M-235

1T399

Electrical Characteristics (Ta=25 °C)

Item

Reverse current
Diode capacitance

Capacitance ratio
Series resistance

Capacitance deviation in a
matching group

Symbol

IR

C2

C25

C2/C25

C25/C28

rs

∆C

Conditions
VR=28 V
VR=2 V, f=1 MHz
VR=25 V, f=1 MHz

CD=14 pF, f=470 MHz
VR=2 to 25 V, f=1 MHz

Min. Typ. Max. Unit

10 nA

29.50 35.50 pF

2.53 2.93 pF

11.0 11.7

1.03

0.75 Ω
2%

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1T399

Diode capacitance vs. Reverse voltage

1 2 5 10 20 50

V

R – Reverse voltage (V)

C – Diode capacitance (pF)

Ta = 25°C

Reverse current vs. Ambient temperature

100

1

10

–20

Ta – Ambient temperature [°C]

I

R

– Reverse current (pA)

0 20 40 60

Forward voltage vs. Ambient temperature

–20 0 20 40 60 80

Ta – Ambient temperature (°C)

V

F

– Forward voltage (V)

IF = 1mA

Reverse voltage vs. Ambient temperature

–20 0 20 40 60

Ta – Ambient temperature (°C)

V

R

– Reverse voltage (V)

50

45

40

35

IR = 10µA

VR = 28V

0.80

0.70

0.60

0.50

100

50

20

10

1

2

80

80

5

Example of Representative Characteristics