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HER302

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LangJie 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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HER302

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

HER302 from LangJie, 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 LangJie
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 100 Volts 1
Maximum DC Blocking Voltage VDC 100 Volts 1
Maximum RMS Voltage VRMS 70 Volts 1
Maximum Average Forward Rectified Current I(AV) 3 Amps TA=75℃ 1
Peak Forward Surge Current IFSM 80 Amps 8.3mS single half sine-wave superimposed on rated load (JEDEC method) 1
Maximum DC Reverse Current at Rated DC Blocking Voltage IR 5 µA Rated DC blocking voltage, TA = 25℃ 1
Maximum DC Reverse Current at Rated DC Blocking Voltage IR 100 µA Rated DC blocking voltage, TA = 125℃ 1
Typical Thermal Resistance (junction to ambient) RθJA 30 ℃/W Junction to ambient, 0.375″(9.5mm) lead length, PCB mounted (Note 3) 1
Operating and Storage Temperature Range TJ,TSTG -55 150 ℃ 1

CAD (KiCad official)

  • Symbol: HER302
  • 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: LangJie datasheet (5 pp, sha256 270cb6491b01401c, retrieved 2026-10-15, 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