component

TPSMB400A-A

Public Made by Adom

by adom

Littelfuse TVS, DO-214AA. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentcircuit protectiontpsmb400a-afactory-2.0.0extractor-text

Changed since verified TPSMB400A-A

by Ray · last 31 Oct 2026 · 1 record · files changed since
SymbolFootprint3D modelPins

Verification log 1 record

31 Oct 2026RayPublished by the parts factory: tier lcsc, 2 pinschanged since
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: TPSMB400A-A · DO-214AA · 2 pins
  • ✓copper: 2 copper pads, none touching another net
  • ✓datasheet: all 2 pin names found in the 6-page datasheet
  • ✓distributor: lcsc C1975725, digikey F10365TR-ND, mouser 576-TPSMB400A-A
  • ✓family: D_SMB
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-5cf9zy8u/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • ✓package_fit: height and body within the datasheet's package drawing (datasheet p.5)
  • ✓pads: 2 pins = 2 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 2 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files! tpsmb400a-a.kicad_sym✓ tpsmb400a-a.kicad_mod✓ tpsmb400a-a.step
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3D Model

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Symbol & Footprint

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Contents

README

markdown

TPSMB400A-A

Littelfuse · TVS · DO-214AA

TPSMB400A-A from Littelfuse, in a DO-214AA. 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 Cathode passive Cathode terminal of the unidirectional TVS diode, marked by the color band on the DO-214AA (SMB J-Bend) body; connect to the protected line, with the part rated for VR 342 V standoff and 380-420 V breakdown at 1 mA.
2 Anode passive Anode terminal of the unidirectional TVS diode on the DO-214AA (SMB J-Bend) package, normally connected to ground, with maximum clamping voltage 548 V at 1.1 A peak pulse current.

Key specifications

Parameter Value
Manufacturer Littelfuse
Package DO-214AA
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 380 420 V @ IT = 1 mA 2
Breakdown Voltage (min row value) VBR 342 V Breakdown voltage column Min 342.00 as printed (Reverse Standoff VR column) 2
Reverse Stand-off Voltage VR 342 V 2
Test Current IT 1 mA 2
Maximum Clamping Voltage VC 548 V @ Ipp = 1.1 A 2
Maximum Peak Pulse Current Ipp 1.1 A 2
Maximum Reverse Leakage IR 1 µA @ VR 2
Maximum Temperature coefficient of VBR αT 0.112 %/C 2
VBR Voltage Tolerance -5 5 % 5% VBR Voltage Tolerance (part numbering system) 5
Peak Pulse Power Dissipation PPPM 600 W 10/1000µs waveform 1
Power Dissipation on infinite heat sink PM(AV) 5 W TL=50°C 1
Peak Forward Surge Current IFSM 100 A 8.3ms single half sine wave, unidirectional only 1
Maximum Instantaneous Forward Voltage VF 5 V at 50A, unidirectional only; 3.5/5 printed, 5.0V for VBR>=300V 1
Operating Junction Temperature Range TJ -65 150 °C VBR > 91V 1
Storage Temperature Range TSTG -65 175 °C 1
Typical Thermal Resistance Junction to Lead RθJL 20 °C/W 1
Typical Thermal Resistance Junction to Ambient RθJA 100 °C/W 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 tin 260°C/10 seconds at terminals ■ Matte tin lead-free plated 1

CAD (KiCad official)

  • Symbol: TPSMB400A-A
  • Footprint: Diode_SMD:D_SMB
  • 3D model: DO-214AA (KiCad packages3D, STEP)
  • 3D model files: tpsmb400a-a-etched.step / tpsmb400a-a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tpsmb400a-a.step / tpsmb400a-a.glb are the bare package body.

Provenance

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

  • Datasheet: Littelfuse datasheet (6 pp, sha256 8cc50e1afb0bea8d, retrieved 2026-10-31, 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