Review TO-92 technical details, limits, and application notes in the manufacturer datasheet.

BC337 NPN Transistor

BC337 is an NPN transistor often used for small switching circuits that need more current than BC547-class parts.

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Quick Facts

  • NPN transistor
  • TO-92
  • Used for switching or signal amplification
  • Verify the pinout and maximum ratings in the manufacturer datasheet.

Pinout / Lead Arrangement

1
Collector
2
Base
3
Emitter

TO-92 front view

BC337 123 CBE

TO-92 bottom view

123 CBE
ⓘ Note: With the flat face toward you, the leads follow the front-view order shown above. Turning the component over reverses left and right. Verify the pinout in the manufacturer datasheet before connecting it.
1 Collector C2 Base B3 Emitter E

Always verify the lead arrangement in the package-specific datasheet before connecting the component.

Where it is used

  • Relay driver
  • LED driver
  • LED, relay, or sensor-output drivers
  • Learning and prototyping circuits

Equivalent / Related parts

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🔬Engineering Tip

Review BC547 BC337 technical details, limits, and application notes in the manufacturer datasheet.

Important notes

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