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.

SILICON PLANAR NPN HIGH

VOLTAGE TRANSISTOR IN A

CERAMIC SURFACE MOUNT

PACKAGE

MECHANICAL DATA

Dimensions in mm (inches)

1

2

3

4

5.59 ± 0.13

(0.22 ± 0.005)

0.23

(0.009)

rad.

1.02 ± 0.20

(0.04 ± 0.008)

2.03 ± 0.20

(0.08 ± 0.008)

1.40 ± 0.15

(0.055 ± 0.006)

0.25 ± 0.03

(0.01 ± 0.001)

0.23

(0.009)

min.

LCC3

FEATURES

• High Voltage

• Ceramic Surface Mount

• Screening Options Available

ABSOLUTE MAXIMUM RATINGS

Collector Current

Collector Peak Current

Storage Temperature

Junction Temperature

PAD 1 = COLLECTOR

PAD 2 = N/C

PAD 3 = EMITTER

PAD 4 = BASE

160V

160V

5V

100mA

200mA

5W

-55 to 200°C

200°C