Operating and Storage Junction Temperature Range: -65 to +150 °C
Package: TO-220
Pinout of BD537
Here is an image showing the pin diagram of this transistor.
Classification of hFE
The BD537 transistor can have a current gain of 40 to 0. The gain of the BD537J will be in the range from 30 to 75, for the BD537K it will be in the range from 40 to 100.
Marking
The BD537 transistor is marked as "BD537".
Complementary PNP transistor
The complementary PNP transistor to the BD537 is the BD538.