2004 Dec 09

2

NXP Semiconductors

Product data sheet

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

PINNING

TYPE NUMBER

MARKING CODE

BST50

AS1

BST51

AS2

BST52

AS3

PIN

DESCRIPTION

1

emitter

2

collector

3

base

321

1

2

3

sym080

Fig.1 Simplified outline (SOT89) and symbol.

ORDERING INFORMATION

TYPE NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

BST50

SC-62

plastic surface mounted package; collector pad for good heat

transfer; 3 leads

SOT89

BST51

BST52