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1.5KE27A-E3

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Vishay Intertech ESD And Surge Protection (TVS/ESD), 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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1.5KE27A-E3

Vishay Intertech · ESD And Surge Protection (TVS/ESD) · DO-27

1.5KE27A-E3 from Vishay Intertech, 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 Vishay Intertech
Package DO-27
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 at IT VBR 25.7 28.4 V IT = 1.0 mA, 1.5KE27A (1N6281A), uni-directional 2
Maximum reverse leakage at VWM ID 1 μA At VWM = 23.1 V 2
Maximum peak pulse current IPPM 40 A 10/1000 μs surge waveform per Fig. 3 (note 2) 2
Maximum clamping voltage at IPPM VC 37.5 V At IPPM = 40.0 A 2
Maximum temperature coefficient of VBR 0.096 %/°C Maximum temperature coefficient of VBR for 1.5KE27A 2
Maximum instantaneous forward voltage VF 3.5 V At 100 A, uni-directional only; 3.5 V applies to 1.5KE220A and below (note 3) 1
Peak pulse power dissipation PPPM 1500 W 10/1000 μs waveform (note 1), fig. 1 1
Peak pulse current IPPM 40 A 10/1000 μs waveform (note 1), see next table (1.5KE27A) 1
Power dissipation PD 6.5 W Infinite heatsink at TL = 75 °C (fig. 5) 1
Peak forward surge current IFSM 200 A 8.3 ms single half sine-wave, uni-directional only (note 2) 1
Operating junction and storage temperature range TJ, TSTG -55 175 °C Operating junction and storage 1
Typical thermal resistance, junction to ambient RθJA 75 °C/W Typical 3
Typical thermal resistance, junction to lead RθJL 15.4 °C/W Typical 3

CAD (KiCad official)

  • Symbol: 1.5KE27A-E3
  • 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: Vishay Intertech datasheet (6 pp, sha256 7dfc9d6c0628f570, retrieved 2026-10-13, 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