component

1.5SMC43CA

Public Made by Adom

by adom

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

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1.5SMC43CA

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

1.5SMC43CA from BOURNS, 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 A1 passive Bidirectional terminal 1 of the 1.5SMC43CA (no cathode band, no polarity), with VRWM 36.8 V, breakdown 40.9 to 45.2 V at 1 mA and maximum clamping voltage 59.3 V at 25.6 A (10/1000 μs).
2 A2 passive Bidirectional terminal 2 of the 1.5SMC43CA (no cathode band, no polarity), with 1500 W minimum peak pulse power (TP = 1 ms) and operating junction temperature of -55 to +150 °C.

Key specifications

Parameter Value
Manufacturer BOURNS
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 40.9 45.2 V @ IT = 1 mA 2
Working Peak Reverse Voltage VRWM 36.8 V 2
Maximum Reverse Leakage IR 1 μA @ VRWM 2
Maximum Clamping Voltage (10/1000 μs) Vc 59.3 V @ Ipp (10/1000 μs) = 25.6 A 2
Maximum Peak Pulse Current (10/1000 μs) Ipp 25.6 A 10/1000 μs 2
Maximum Clamping Voltage (8/20 μs) Vc 77.1 V @ Ipp (8/20 μs) = 128 A 2
Maximum Peak Pulse Current (8/20 μs) Ipp 128 A 8/20 μs 2
Breakdown Voltage Tolerance -5 5 % CA = 5 % tolerance bidirectional 1
Peak Pulse Power Dissipation PPK 1500 Watts TP = 1 ms, minimum 1
Peak Forward Surge Current IFSM 200 Amps 8.3 ms single half sine wave superimposed on rated load (JEDEC method) 1
Operating Temperature Range TJ -55 150 °C 1
Storage Temperature Range TSTG -55 150 °C 1
Breakdown Voltage Temperature Coefficient ΔVBR 0.1 % x VBR @ 25 °C per °C ΔVBR = 0.1 % x VBR @ 25 °C x ΔT, typical 1

CAD (KiCad official)

  • Symbol: 1.5SMC43CA
  • Footprint: Diode_SMD:D_SMC
  • 3D model: SMC (KiCad packages3D, STEP)
  • 3D model files: 1-5smc43ca-etched.step / 1-5smc43ca-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 1-5smc43ca.step / 1-5smc43ca.glb are the bare package body.

Provenance

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

  • Datasheet: BOURNS datasheet (6 pp, sha256 4bfe87b3d33fb4d3, retrieved 2026-10-22, 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