component

TPSMD43A

Public Made by Adom

by adom

Littelfuse TVS, DO-214AB. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.

componentcircuit protectiontpsmd43afactory-2.0.0extractor-text

Verified TPSMD43A

by Ray · last 30 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

30 Oct 2026RayPublished by the parts factory: tier lcsc, 2 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: TPSMD43A · DO-214AB · 2 pins
  • ✓copper: 2 copper pads, none touching another net
  • ✓datasheet: all 2 pin names found in the 6-page datasheet
  • ✓distributor: lcsc C1974101, digikey F6575TR-ND, mouser 576-TPSMD43A
  • ✓family: D_SMC
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-hgt1t25g/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 2 pins = 2 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 2 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ tpsmd43a.kicad_sym✓ tpsmd43a.kicad_mod✓ tpsmd43a.step
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3D Model

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Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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Contents

README

markdown

TPSMD43A

Littelfuse · TVS · DO-214AB

TPSMD43A from Littelfuse, in a DO-214AB. 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 Littelfuse
Package DO-214AB
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 (minimum) VBR 47.8 V @ IT (test current 1 mA), TPSMD43A unidirectional row 2
Breakdown Voltage VBR (maximum) VBR 52.8 V @ IT (test current 1 mA), TPSMD43A unidirectional row 2
Maximum Clamping Voltage VC 69.4 V @ Ipp = 43.2 A 2
Maximum Peak Pulse Current Ipp 43.2 A 2
Maximum Reverse Leakage Current IR 2 µA @ VR 2
Peak Pulse Power Dissipation PPPM 3000 W 10/1000µs Waveform (Fig.2)(Note 1), (Note 2) 1
Power Dissipation on Infinite Heat Sink PM(AV) 6.5 W at TA=50°C 1
Peak Forward Surge Current IFSM 300 A 8.3ms Single Half Sine Wave (Note 3) 1
Maximum Instantaneous Forward Voltage VF 3.5 V at 100A for Unidirectional Only 1
Operating Junction and Storage Temperature Range TJ, TSTG -65 150 °C 1
Typical Thermal Resistance Junction to Lead RθJL 15 °C/W Typical 1
Typical Thermal Resistance Junction to Ambient RθJA 75 °C/W Typical 1

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts copper 2. Mounted on copper pad area of 0.31x0.31” (8.0 x 8.0mm) to each terminal. 1

CAD (KiCad official)

  • Symbol: TPSMD43A
  • Footprint: Diode_SMD:D_SMC
  • 3D model: DO-214AB (KiCad packages3D, STEP)
  • 3D model files: tpsmd43a-etched.step / tpsmd43a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tpsmd43a.step / tpsmd43a.glb are the bare package body.

Provenance

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

  • Datasheet: Littelfuse datasheet (6 pp, sha256 778e34f01000b1a4, retrieved 2026-10-30, 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