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UF104

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SUNMATE Elec Fast Recovery / High Efficiency Diodes, DO-41. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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UF104

SUNMATE Elec · Fast Recovery / High Efficiency Diodes · DO-41

UF104 from SUNMATE Elec, 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 lead on the end of the body marked with the cathode band; UF104 blocks up to 400 V (VRRM/VRWM/VR) and passes 1.0 A average rectified current at TA = 55C.
2 A passive Anode, the lead on the end opposite the cathode band; peak forward surge current is 30 A (8.3 ms half sine-wave) and forward voltage is 1.3 V at IF = 1.0 A.

Key specifications

Parameter Value
Manufacturer SUNMATE Elec
Package DO-41
Category Diodes
Pins 2

CAD (KiCad official)

  • Symbol: UF104
  • 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: SUNMATE Elec datasheet (2 pp, sha256 4c8ad4cb60f1a8ea, retrieved 2026-10-13, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-5-5 (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