component

UF304

Public Made by Adom

by adom

SUNMATE Elec Fast Recovery / High Efficiency Diodes, DO-27. 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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UF304

SUNMATE Elec · Fast Recovery / High Efficiency Diodes · DO-27

UF304 from SUNMATE Elec, in a DO-27. 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 SUNMATE Elec
Package DO-27
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
Peak Repetitive Reverse Voltage VRRM 400 V UF304 column of the 50-1000 V rating row 1
Working Peak Reverse Voltage VRWM 400 V UF304 column of the rating row 1
DC Blocking Voltage VR 400 V UF304 column of the rating row 1
RMS Reverse Voltage VR(RMS) 280 V UF304 column of the rating row 1
Average Rectified Output Current IO 3 A @TA = 55°C, Note 1: leads at ambient 9.5 mm from case 1
Non-Repetitive Peak Forward Surge Current IFSM 150 A 8.3 ms single half sine-wave on rated load (JEDEC Method) 1
Peak Reverse Current at rated DC blocking voltage IRM 10 µA @TA = 25°C, at rated DC blocking voltage 1
Peak Reverse Current at rated DC blocking voltage IRM 100 µA @TA = 100°C, at rated DC blocking voltage 1
Operating Temperature Range Tj -65 125 °C 1
Storage Temperature Range TSTG -65 150 °C 1

CAD (KiCad official)

  • Symbol: UF304
  • Footprint: Diode_THT:D_DO-27_P15.24mm_Horizontal
  • 3D model: DO-27 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: SUNMATE Elec datasheet (2 pp, sha256 5cccea01271d2d6f, retrieved 2026-10-16, tier: lcsc)
  • 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