component

1.5SMC56A

Public Made by Adom

by adom

MSKSEMI ESD And Surge Protection (TVS/ESD), SMC. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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1.5SMC56A

MSKSEMI · ESD And Surge Protection (TVS/ESD) · SMC

1.5SMC56A from MSKSEMI, in a SMC. 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 (color-band end) of the unidirectional 1.5SMC56A TVS, connected to the protected line; reverse stand-off 47.80 V, breakdown 53.20~58.80 V at 1 mA, max clamping 77.0 V at 19.7 A.
2 A passive Anode of the unidirectional 1.5SMC56A TVS, normally connected to ground/return; 1500 W peak pulse power at 10/1000 µs.

Key specifications

Parameter Value
Manufacturer MSKSEMI
Package SMC
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 VBR 53.2 58.8 V @IT = 1 mA, TA=25℃ 4
Reverse Stand-Off Voltage VRWM 47.8 V TA=25℃ 4
Maximum Clamping Voltage VC 77 V @IPP=19.7 A, 10/1000μs 4
Peak Pulse Current IPP 19.7 A 10/1000μs waveform 4
Reverse Leakage IR 1 μA @VRWM 4
Peak pulse power dissipation PPPM 1500 W 10/1000μs waveform 3
Steady state power dissipation PM(AV) 6.5 W TA=50℃ 3
Peak forward surge current IFSM 200 A 8.3ms single half sine-wave superimposed on rated load 3
Operating junction and storage temperature TJ,TSTG -55 150 ℃ 3
Thermal resistance junction to lead RθJL 15 ℃/W typical 3
Thermal resistance junction to ambient RθJA 75 ℃/W typical 3
VBR Voltage Tolerance -5 5 % A suffix: 5% VBR tolerance 2

CAD (KiCad official)

  • Symbol: 1.5SMC56A
  • Footprint: Diode_SMD:D_SMC
  • 3D model: SMC (KiCad packages3D, STEP)
  • 3D model files: 1-5smc56a-etched.step / 1-5smc56a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 1-5smc56a.step / 1-5smc56a.glb are the bare package body.

Provenance

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

  • Datasheet: MSKSEMI datasheet (8 pp, sha256 d243cb857c1e17b5, retrieved 2026-10-23, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-5-5 (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