Thermal resistance junction - case

max

30°C/W

Thermal resistance junction - ambient

max

175°C/W

Website: http://www.semelab.co.uk

Document Number 2666

Issue 1

BF257CSM4

Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is

believed to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in

its use. Semelab encourages customers to verify that datasheets are current before placing orders.

Thermal Data

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Collector–Emitter Breakdown Voltage

Collector – Base Breakdown Voltage

Emitter - Base Breakdown Voltage

Collector Cutoff Current

Collector – Emitter Saturation Voltage

DC Current Gain

Transition Frequency

Reverse Capacitance

160

160

5

50

1

25

90

3

V

nA

V

—

MHz

pF

f = 1MHz