Datasheet

2004 Dec 09 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
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