2SC458, 2SC2308

3

Electrical Characteristics (Ta = 25°C)

2SC458

2SC2308

Item

Symbol

Min

Typ

Max

Min

Typ

Max

Unit

Test conditions

Collector to base

breakdown voltage

V

(BR)CBO

30

—

—

55

—

—

V

I

Collector to emitter

breakdown voltage

V

(BR)CEO

30

—

—

50

—

—

V

I

Emitter to base

breakdown voltage

V

(BR)EBO

5

—

—5

——

V

I

Collector cutoff current

I

CBO

—

—

0.5

—

—

0.5

µAV

Emitter cutoff current

I

EBO

—

—

0.5

—

—

0.5

µAV

DC current transfer ratio h

1

100

—

500

100

—

320

V

Collector to emitter

saturation voltage

V

CE(sat)

—

—

0.2

—

—

0.2

V

I

Base to emitter voltage

V

BE

—

0.67

0.75

—

0.67

0.75

V

V

Gain bandwidth product f

T

—

230

—

—

230

—

MHz

V

Collector output

capacitance

Cob

—

1.8

3.5

—

1.8

3.5

pF

V

f = 1 MHz

Noise figure

NF

—

4

10

—

4

10

dB

V

f = 1 kHz, R

Small signal input

impedance

h

ie

—

16.5

—

—

16.5

—

k

Ω

V

f = 270 Hz

Small signal voltage

feedback ratio

h

re

—

70

——70

—

Small signal current

trancefer ratio

h

fe

—

130

—

—

130

—

Small signal output

admittance

h

oe

—

11.0

—

—

11.0

—

µS

Note:

1. The 2SC458 and 2SC2308 are grouped by h

BC

D

2SC458

100 to 200

160 to 320

250 to 500

2SC2308

100 to 200

160 to 320

—

See characteristic curves of 2SC458 (LG) and 2SC2310 except for the followings.