SEMICOA SD4957, SD4957F, SQ4957, SQ4957F Datasheet

Data Sheet No. 2C4957

Mechanical Specifications

Due to limitations of probe testing, only dc parameters are tested. This must be done with pulse width less

Chip Type 2C4957
Geometry 0006
Polarity PNP

Chip type 2C4957 by Semicoa Semi­conductors provides performance
similar to these devices.

Part Numbers:

2N4957, 2N4957UB, 2N4958, 2N4958UB,

2N4959, 2N4959UB, SD4957, SD4957F,
SQ4957, SQ4957F

Generic Packaged Parts:
2N4957, 2N4958, 2N4959

Product Summary:

APPLICATIONS:

Designed for high-gain, low-noise class A
amplifiers, oscillators and mixers.

Features: Special Characteristics

ft = 1.6 GHz (typ) at 2.0 mA/10V

Radiation graphs available

Metallization

Bonding Pad Size

Die Thickness

Chip Area

Top Surface

Top Al - 12 kÅ min.

Backside Au - 6.5 kÅ nom.

Emitter 2.3 mils x 2.3 mils

Base 2.3 mils x 2.3 mils

8 mils nominal
16 mils x 16 mils
Silox Passivated

Electrical Characteristics

TA = 25oC

Parameter Test conditions Min Max Unit

BV

CEO

BV

CBO

BV

EBO

I

CBO

h

FE

than 300 µs, duty cycle less than 2%.

IC = 1.0 mA
IC = 100 µA
IE = 100 µA

VCB = 10 V dc

VCE = 10 V, IC = 2.0 mA

30 --- V dc
30 --- V dc

3.0 --- V dc

--- 0.1 µA
20 150 ---