2N4957

Technical Characteristics

• Mounting Method

  terminal

• Voltage Rating In Volts Per Characteristic

  30.0 maximum breakdown voltage, collector-to-emitter, base open and 30.0 maximum breakdown voltage, collector-to-base, emitter open and 3.0 maximum breakdown voltage, emitter-to-base, collector open

• Overall Diameter

  0.230 inches maximum

• Power Rating Per Characteristic

  200.0 milliwatts small-signal input power, common-collector minimum

• Internal Configuration

  junction contact

• Features Provided

  hermetically sealed case

• Overall Length

  0.210 inches maximum

• Semiconductor Material

  silicon

• Terminal Length

  0.500 inches minimum

• Inclosure Material

  metal

• Terminal Type And Quantity

  4 uninsulated wire lead

• Internal Junction Configuration

  pnp

• Terminal Circle Diameter

  0.100 inches nominal

• Current Rating Per Characteristic

  30.00 milliamperes source cutoff current maximum and 2.00 milliamperes source cutoff current blank