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  • point-contact-germanium-diode-1n34a
  • point-contact-germanium-diode-1n34a

Point Contact Germanium Diode 1N34A

Low forward voltage drop, high sensitivity, ideal for signal detection.
SKU: 1N34A
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Point Contact Germanium Diode 1N34A

This point-contact semiconductor device uses germanium for low-level signal detection and low-current electronic operation. Its junction provides rectifying behavior suitable for detecting and demodulating small signals, while forward voltage varies with current, temperature, individual device characteristics, and the measuring instrument used.

Product Specifications

Diode Type Point-Contact Germanium Diode
Part Number 1N34A
Package DO-7 Axial Glass
Peak Inverse Voltage (PIV) 65 V
Average Rectified Current 50 mA
Peak Forward Surge Current 500 mA
Maximum Forward Voltage 1.00 V max. at IF = 5 mA, TJ = 25°C
Maximum Reverse Current 30 µA at 10 V; 500 µA at 50 V
Typical Junction Capacitance 0.8 pF
Operating Temperature -65°C to +75°C
Cathode Identification Band marks cathode
Observed Forward DMM Test at 27°C Approximately 0.284 V
Observed Forward DMM Test at 33°C Approximately 0.262 V
Observed Reverse DMM Test Open / no conduction
Observed Forward Voltage with Low-Voltage Test Approximately 0.21 V using ~5 V source and ~1 kΩ series resistor
Estimated Forward Current in Low-Voltage Test Approximately 4.8 mA

Applications and Benefits:

  • Crystal radio receivers
  • AM and RF signal detection
  • Audio signal detection
  • Detector and demodulator circuits
  • Low-current rectification
  • Educational electronics projects

Caution:

Forward voltage (Vf) varies with current, temperature, and test equipment. The 1.00 V maximum rating applies at IF = 5 mA and TJ = 25°C and is not an expected handheld multimeter reading. Observed sample measurements are approximate and are not guaranteed values. For applications requiring a specific forward voltage, test the diode under the actual circuit operating conditions.

  • Availability: In Stock
  • Model: 1N34A
  • Brand: MiniScience

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