BC337 Transistor Pinout, Equivalent, Uses, Features & Applications

BC337 is another good transistor that is having many good features in its small TO-92 package. It is also a must to have transistor in your lab, one of a good feature of this transistor is its 800mA collector current that is rarely found in this package transistors. This post is all about BC337 transistor pinout, equivalent, uses, features & applications.


BC337 Transistor Pinout, Equivalent, Uses, Features & Applications



Features / technical specifications:

  • Package Type: TO-92
  • Transistor Type: NPN
  • Max Collector Current(IC): 0.8A or 800mA
  • Max Collector-Emitter Voltage (VCE): 45V
  • Max Collector-Base Voltage (VCB): 50V
  • Max Emitter-Base Voltage (VBE): 5V
  • Max Collector Dissipation (Pc): 625 Watt
  • Max Transition Frequency (fT): 100 MHz
  • Minimum & Maximum DC Current Gain (hFE): 100 – 630
  • Max Storage & Operating temperature Should be: -55 to +150 Centigrade


PNP Complementary:

PNP Complementary of BC337 is BC327


Replacement and Equivalent:

2N7051, BC338, BC487, 2N2222


BC337 Transistor Explained / Description:

BC337 is a NPN transistor with good characteristics, this transistor can be used in audio frequency driver stages, low power audio amplifier stages and wide variety of general purpose functions for example amplification and switching purposes. This little TO-92 transistor is packed with lot of good features which makes it suitable for used in many electronic circuits. The max load this transistor can handle is 800mA which is enough to drive many loads in an electronic circuits. The maximum voltage this transistor allow through its collector to emitter is 45V that is a good feature which makes it suitable to use in circuits which require more than 24V. The max gain this transistor can provide is 630 that is also a good feature that makes it suitable to use in audio frequency amplification circuits.



Where We Can Use it & How to Use:

BC337 can be used in variety of electronic circuits and projects, due to its high maximum characteristics you can use it in small audio amplification stages and at the output stage of low power audio amplifiers, its high gain feature also allows it to be used in audio preamplifier stages. In other way it can also be used to switch small loads in electronic circuits for example to switch ON another part in an electronic circuit, switch ON and OFF LEDS, relays, bulbs and any type of load under 800mA.



Audio frequency driver stages

Low power audio amplifiers

Switch for small loads

Amplifying low gain signals to high gain

Darlington pair


How to Safely Long Run in a Circuit:

To safely run this transistor in your circuit for long term do not operate it directly in circuit which are using more than 45V. Also use a suitable resistor base resistor to limit its base current to required level. The maximum temperature in which this transistor can survive is from -55 to +150 centigrade so do not expose it in the temperature below -55 centigrade and above +150 centigrade.

You may also like...

Leave a Reply

Your email address will not be published. Required fields are marked *