1999 Apr 26

2

Philips Semiconductors

Product specification

NPN Darlington transistors

BST50; BST51; BST52

FEATURES

• High current (max. 0.5 A)

• Low voltage (max. 80 V)

• Integrated diode and resistor.

APPLICATIONS

• Industrial switching applications such as:

– Print hammer

– Solenoid

– Relay and lamp driving.

DESCRIPTION

NPN Darlington transistor in a SOT89 plastic package.

PNP complements: BST60, BST61 and BST62.

MARKING

TYPE NUMBER

MARKING CODE

BST50

AS1

BST51

AS2

BST52

AS3

PINNING

PIN

DESCRIPTION

1

emitter

2

collector

3

base

Fig.1 Simplified outline (SOT89) and symbol.

handbook, halfpage

12

3

MAM327

Bottom view

3

2

1