component

SMBJ28CAHM4G

Public Made by Adom

by adom

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

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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docs Publish 0.1.0 · Ray 9d ago
viewers smbj28cahm4g: symbol repaired (D_Zener, cathode pad 1) · Ray 2d ago
package.json Publish 0.1.0 · Ray 9d ago
page.json Set visibility: public · Ray 9d ago
README.md Publish 0.1.0 · Ray 9d ago
smbj28cahm4g-etched.glb Publish 0.1.0 · Ray 9d ago
smbj28cahm4g-etched.step smbj28cahm4g: factory component page (tier=lcsc) · Ray 9d ago
smbj28cahm4g-hero.glb smbj28cahm4g: hero GLB from the etched model (keeps the MPN mark) · Ray 9d ago
smbj28cahm4g-hero.overlay.json Publish 0.1.0 · Ray 9d ago
smbj28cahm4g.glb Publish 0.1.0 · Ray 9d ago
smbj28cahm4g.kicad_mod Publish 0.1.0 · Ray 9d ago
smbj28cahm4g.kicad_sym smbj28cahm4g: symbol repaired (D_Zener, cathode pad 1) · Ray 2d ago
smbj28cahm4g.lbr smbj28cahm4g: symbol repaired (D_Zener, cathode pad 1) · Ray 2d ago
smbj28cahm4g.step Publish 0.1.0 · Ray 9d ago

SMBJ28CAHM4G

Taiwan Semiconductor(Taiwan Semicon) · TVS · DO-214AA(SMB)

SMBJ28CAHM4G from Taiwan Semiconductor(Taiwan Semicon), in a DO-214AA(SMB). 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 Taiwan Semiconductor(Taiwan Semicon)
Package DO-214AA(SMB)
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 31.1 34.4 V IT=1 mA (Note 1) 3
Maximum blocking leakage current ID@VWM 1 µA at VWM=28 V 3
Maximum peak impulse current IPP 13.8 A Note 2 3
Maximum clamping voltage VC@IPP 45.4 V at IPP=13.8 A (Note 2) 3
Working stand-off voltage VWM 28 V 3
Non-repetitive peak impulse power dissipation PPK 600 W 10/1000µs waveform (Note 1) 1
Steady state power dissipation PD 3 W at TA=25°C 1
Junction temperature TJ -55 150 °C 1
Storage temperature TSTG -55 150 °C 1
Junction-to-Case Thermal Resistance RӨJC 10 °C/W 2
Junction-to-Ambient Thermal Resistance RӨJA 55 °C/W 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 tin ● Terminal: Matte tin plated leads, solderable per J-STD-002 ● Meet JESD 201 class 2 whisker test 1

CAD (KiCad official)

  • Symbol: SMBJ28CAHM4G
  • Footprint: Diode_SMD:D_SMB
  • 3D model: DO-214AA(SMB) (KiCad packages3D, STEP)
  • 3D model files: smbj28cahm4g-etched.step / smbj28cahm4g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smbj28cahm4g.step / smbj28cahm4g.glb are the bare package body.

Provenance

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

  • Datasheet: Taiwan Semiconductor(Taiwan Semicon) datasheet (8 pp, sha256 8f8fddd26c649e7c, retrieved 2026-10-28, 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