The Microsemi Corporation 2N4957 is a PNP transistor with a gain of 25dB. It has a maximum collector current of 30mA and a maximum collector-emitter breakdown voltage of 30V.

• The transistor is packaged: in a TO-72-3 metal can and is designed for use in discrete semiconductor products.
• The device has a noise figure: of 3.5dB @ 450MHz and a maximum power of 200mW.
• It has a temperature range: of -65°C to 200°C and a DC current gain of 30 @ 5mA and 10V.
• The device is supplied: in bulk packaging and is mounted through hole. in the open market.
• The supply and demand status: is limited.
• The manufacturer pack quantity: is 1 and it has an MSL level of 1 (unlimited).