2N491A

Technical Characteristics

• Terminal Length

  1.500 inches minimum

• Semiconductor Material

  silicon

• Joint Electronic Device Engineering Council/Jedec/Case Outline Designation

  to-5

• Overall Diameter

  0.350 inches nominal

• Internal Configuration

  unijunction

• Mounting Method

  terminal

• Terminal Type And Quantity

  3 uninsulated wire lead

• Special Features

  junction pattern arrangement: pn

• Current Rating Per Characteristic

  70.00 milliamperes source cutoff current blank

• Overall Length

  0.250 inches nominal

• Voltage Rating In Volts Per Characteristic

  60.0 maximum base to emitter voltage, dc

• Power Rating Per Characteristic

  600.0 milliwatts small-signal input power, common-collector preset

• Maximum Operating Temp Per Measurement Point

  175.0 deg celsius junction

• Inclosure Material

  metal

• Test Data Document

  18876-10669446 drawing (this is the basic governing drawing, such as a contractor drawing, original equipment manufacturer drawing, etc.; excludes any specification, standard or other document that may be referenced in a basic governing drawing)