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SF55G

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NH 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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SF55G

NH · Fast Recovery / High Efficiency Diodes · DO-27

SF55G from NH, 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 NH
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
Maximum repetitive peak reverse voltage VRRM 300 V 1
Maximum RMS voltage VRMS 210 V 1
Maximum DC blocking voltage VDC 300 V 1
Maximum average forward rectified current IF(AV) 5 A see fig.1 1
Peak forward surge current IFSM 150 A 8.3ms single half sine-wave superimposed on rated load (JEDEC method at rated TL) 1
Storage temperature range TSTG -55 150 °C 1
Operating junction and storage temperature range TJ -55 150 °C 1
Maximum instantaneous forward voltage VF 1.25 V 1
Maximum instantaneous reverse current at rated DC blocking voltage IR 5 uA Ta=25℃ 1
Maximum instantaneous reverse current at rated DC blocking voltage IR 100 uA Ta=125℃ 1
Maximum reverse recovery time TRR 35 ns IF=0.5A, IR=1.0A, IRR=0.25A, Ta=25℃ 1

CAD (KiCad official)

  • Symbol: SF55G
  • 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: NH datasheet (5 pp, sha256 47f17f72a03ed962, retrieved 2026-10-14, 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