component

1N4738ATR

Public Made by Adom

by adom

onsemi Zener Diodes, DO-41. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.

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1N4738ATR

onsemi · Zener Diodes · DO-41

1N4738ATR from onsemi, in a DO-41. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 K passive Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint.
2 A passive Anode.

Key specifications

Parameter Value
Manufacturer onsemi
Package DO-41
Category Diodes
Pins 2

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Zener Voltage VZ 7.79 8.2 8.61 V @ IZ = 31 mA, Ta = 25°C, TL = 30°C ±1°C, 3/8″ lead length 2
Max. Zener Impedance ZZ 4.5 Ω @ IZ = 31 mA 2
Max. Zener Impedance (knee) ZZK 700 Ω @ IZK = 0.5 mA 2
Leakage Current IR 10 µA @ VR = 6 V 2
Non-Repetitive Peak Reverse Current IZSM 550 mA 2 Square wave reverse surge at 8.3 ms soak time 2
Power Dissipation PD 1 W @ TL ≤ 50°C, Lead Length = 3/8″ 1
Power Dissipation Derating 6.67 mW/°C Derate above 50°C 1
Operating and Storage Temperature Range TJ, TSTG -65 200 °C 1
Test Current IZ 31 mA Test current for VZ 2

CAD (KiCad official)

  • Symbol: 1N4738ATR
  • Footprint: Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal
  • 3D model: DO-41 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: onsemi datasheet (7 pp, sha256 57e694dd55afde6c, retrieved 2026-10-22, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary cathode-band convention (convention), consensus off (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF