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1.5KE56A

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RUILON Shenzhen Ruilongyuan Elec ESD And Surge Protection (TVS/ESD), DO-201. 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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1.5KE56A

RUILON Shenzhen Ruilongyuan Elec · ESD And Surge Protection (TVS/ESD) · DO-201

1.5KE56A from RUILON Shenzhen Ruilongyuan Elec, in a DO-201. 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 RUILON Shenzhen Ruilongyuan Elec
Package DO-201
Category Circuit Protection
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
Breakdown voltage (1.5KE56A, unidirectional) VBR 53.2 58.8 V @ IT = 1 mA 2
Max clamping voltage (10/1000µs) VC 77 V @ IPP = 19.5 A, 10/1000µs waveform 2
Max peak pulse current (10/1000µs) IPP 19.5 A 10/1000µs waveform 2
Reverse leakage current IR 1 µA @ VRWM = 47.8 V 2
Peak pulse power dissipation PPP 1500 W 10x1000µs, non-repetitive (Note 1) 1
Steady state power dissipation PD 5 W TL = 75°C, infinite heat sink (Fig. 6) 1
Peak forward surge current IFSM 100 A 8.3ms single half sine-wave, unidirectional only (Note 2) 1
Operating junction and storage temperature range TJ,TSTG -55 150 °C 1
Reverse stand-off voltage VRWM 47.8 V 2
Test current for VBR IT 1 mA Test current for VBR 2

CAD (KiCad official)

  • Symbol: 1.5KE56A
  • Footprint: Diode_THT:D_DO-201AD_P15.24mm_Horizontal
  • 3D model: DO-201 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: RUILON Shenzhen Ruilongyuan Elec datasheet (6 pp, sha256 90967e81fb1cb38e, 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