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1N3129 (1N3128 has same package) on quarter dollar

The 1N3128 is a 5 mA Germanium tunnel diode.

  • Tektronix part number: 154-0074-00 (152-074)
  • Peak current: 5 ± 0.25 mA
  • Total capacitance: 15 pF
  • Peak to valley current ratio: min. 8.0
  • Peak voltage: 80 mV
  • Valley voltage: 280 mV
  • Forward voltage at peak current: 530 mV
  • Series inductance: 0.6 nH
  • Series resistance: 3 Ω
  • Semiconductor material: Germanium
  • Maximum operating temperature: 100 °C
  • Package style: DO-25var
  • Mounting style: T

Used in