component

SMDJ400A

Public Made by Adom

by adom

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

componenttvs-fuse-board level protectionsmdj400afactory-2.0.0extractor-text

Verified SMDJ400A

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: SMDJ400A · DO-214AB(SMCJ) · 2 pins
  • ✓copper: 2 copper pads, none touching another net
  • ✓datasheet: unpolarised two-terminal part: pins 1 and 2 by library convention, no names to check
  • ✓distributor: lcsc C3702976, digikey 18-SMDJ400ATR-ND, mouser 576-SMDJ400A
  • ✓family: D_SMC
  • ✓files: 6 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-dl31sfxf/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 1 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: 1 STEP(s) Z-up, seated, centred
  • ✓symbol: 2 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ smdj400a.kicad_sym✓ smdj400a.kicad_mod✓ smdj400a.step
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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 10d ago
viewers smdj400a: viewers · Ray 10d ago
package.json Publish 0.1.0 · Ray 10d ago
page.json Set visibility: public · Ray 10d ago
README.md Publish 0.1.0 · Ray 10d ago
smdj400a-hero.glb Publish 0.1.0 · Ray 10d ago
smdj400a-hero.overlay.json Publish 0.1.0 · Ray 10d ago
smdj400a.glb Publish 0.1.0 · Ray 10d ago
smdj400a.kicad_mod Publish 0.1.0 · Ray 10d ago
smdj400a.kicad_sym Publish 0.1.0 · Ray 10d ago
smdj400a.lbr Publish 0.1.0 · Ray 10d ago
smdj400a.step Publish 0.1.0 · Ray 10d ago
verification.json Verified: Published by the parts factory: tier lcsc, 2 pins · Ray 10d ago

SMDJ400A

Littelfuse · TVS · DO-214AB(SMCJ)

SMDJ400A from Littelfuse, in a DO-214AB(SMCJ). 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 1 passive Terminal 1 of an unpolarised fuse; either orientation.
2 2 passive Terminal 2 of an unpolarised fuse; either orientation.

Key specifications

Parameter Value
Manufacturer Littelfuse
Package DO-214AB(SMCJ)
Category TVS/Fuse/Board Level 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 447 494 V IT = 1 mA 2
Reverse Leakage Current IR 2 µA @ VR = 400 V 2
Maximum Clamping Voltage 10/1000µs VC 648 V @ Ipp 6.2 A (10/1000µs) 2
Maximum Peak Pulse Current 10/1000µs Ipp 6.2 A 10/1000µs 2
Maximum Clamping Voltage 8/20µs VC 837.21 V @ Ipp 23.5 A (8/20µs) 2
Maximum Peak Pulse Current 8/20µs Ipp 23.5 A 8/20µs 2
Maximum Temperature Coefficient of VBR αT 0.112 %/C 2
Maximum Instantaneous Forward Voltage (Single Die) VF 3.5 V at 100 A, unidirectional only, single-die parts 1
Maximum Instantaneous Forward Voltage (Stacked Die) VF 5 V at 100 A, unidirectional only, stacked-die parts 1
Peak Pulse Power Dissipation (Single Die) PPPM 3000 W 10/1000µs test waveform (Fig.4), single die parts 1
Peak Pulse Power Dissipation (Stacked Die) PPPM 4000 W 10/1000µs test waveform (Fig.4), stacked-die parts 1
Power Dissipation on Infinite Heat Sink PD 6.5 W at TL = 50°C 1
Peak Forward Surge Current IFSM 300 A 8.3 ms single half sine wave 1
Operating Temperature Range TJ -65 150 °C 1
Storage Temperature Range TSTG -65 175 °C 1
Typical Thermal Resistance Junction to Lead RθJL 15 °C/W 1
Typical Thermal Resistance Junction to Ambient RθJA 75 °C/W 1
Reverse Stand-off Voltage VR 400 V 2

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: SMDJ400A
  • Footprint: Diode_SMD:D_SMC
  • 3D model: DO-214AB(SMCJ) (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Littelfuse datasheet (6 pp, sha256 ce0f83e04ec5de82, retrieved 2026-10-30, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary two-terminal 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