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HER203

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NH Fast Recovery/High Efficiency Diode, DO-15. 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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HER203

NH · Fast Recovery/High Efficiency Diode · DO-15

HER203 from NH, in a DO-15. 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-15
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 V RRM 200 V 1
Maximum RMS voltage V RMS 140 V 1
Maximum DC blocking voltage V DC 200 V 1
Maximum average forward rectified current IF (AV) 2 A see fig.1 1
Peak forward surge current I FSM 60 A 8.3ms single half sine-wave superimposed on rated load (JEDEC method at rated TL) 1
Maximum instantaneous forward voltage VF 1.7 V at 2.0 A (Note 1) 1
Maximum instantaneous reverse current I RRM 5 uA TA=25℃, at rated DC blocking voltage (Note 2) 1
Maximum instantaneous reverse current I RRM 100 uA TA=100℃, at rated DC blocking voltage (Note 2) 1
Operating junction temperature range T J -55 150 ℃ 1
Storage temperature range T STG -55 150 ℃ 1

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
housing PET PLASTIC HIGH-EFFICIENCY RECTIFIERS Fig.5-MAX. NON-REPETITIVE SURGE CURRENT Fig.6-REVERSE RECOVERY TIME CHARACTERISTIC AND TEST CIRCUIT 2

CAD (KiCad official)

  • Symbol: HER203
  • Footprint: Diode_THT:D_DO-15_P12.70mm_Horizontal
  • 3D model: DO-15 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: NH datasheet (5 pp, sha256 8d29b97f8075f474, retrieved 2026-10-21, 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