1A3 Diode

Specifications of 1A3 diode

  • Maximum Recurrent Peak Reverse Voltage: 200 V
  • Maximum Average Forward Output Current: 1 A
  • Maximum Forward Voltage Drop per element at 1.0A DC: 1.1 V
  • Typical Junction Capacitance: 15 pF
  • Package: R-1
  • Weight: 0.19 grams
  • Operating and Storage Temperature Range: -60...+150 °C

Polarity and Pinout

The 1A3 diode has a cathode (-) and anode (+). In the schematic symbol, the tip of the triangle with the line on top of it is the cathode. The cathode is marked on the body of a diode by a band as shown below.
1A3 diode polarity
The current can flow from only the anode to the cathode and never from the cathode to the anode - the 1A3 diode is like a one way electric valve.

Dimensions of 1A3 diode

Dimensions 1A3 diode

Replacement and Equivalent

You can replace the 1A3 with the SF14, RL207, RL206, RL205, RL204, RL203, HER208, HER207, HER206, HER205, HER204, HER203, HER158, HER157, HER156, HER155, HER154, HER153, HER108, HER107, HER106, HER105, HER104, HER103, FR207, FR206, FR205, FR204, FR203, FR157, FR156, FR155, FR154, FR153, FR107, FR106, FR105, FR104, FR103, EM520, EM516, EM513, BY133, 1U8, 1U7, 1U6, 1U5, 1U4, 1U3, 1N5399, 1N5398, 1N5397, 1N5395, 1N5393, 1N4937, 1N4936, 1N4935, 1N4007, 1N4006, 1N4005, 1N4004, 1N4003, 1A7, 1A6, 1A5, 1A4, SF15, SF16, SF18, SF24, SF25, SF26, SF28, UF4003, UF4004, UF4005, UF4006, UF4007, 1N4003G, 1N4004G, 1N4005G, 1N4006G, 1N4007G, 1N4935G, 1N4936G, 1N4937G