component

SMBJ28CA-TR

Public Made by Adom

by adom

STMicroelectronics TVS, SMB(DO-214AA). 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
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 15d ago
viewers smbj28ca-tr: symbol repaired (D_Zener, cathode pad 1) · Ray 2d ago
package.json Publish 0.1.0 · Ray 15d ago
page.json Set visibility: public · Ray 15d ago
README.md Publish 0.1.0 · Ray 15d ago
smbj28ca-tr-etched.glb Publish 0.1.0 · Ray 15d ago
smbj28ca-tr-etched.step smbj28ca-tr: factory component page (tier=mfr) · Ray 15d ago
smbj28ca-tr-hero.glb smbj28ca-tr: hero GLB from the etched model (keeps the MPN mark) · Ray 15d ago
smbj28ca-tr-hero.overlay.json Publish 0.1.0 · Ray 15d ago
smbj28ca-tr.glb Publish 0.1.0 · Ray 15d ago
smbj28ca-tr.kicad_mod Publish 0.1.0 · Ray 15d ago
smbj28ca-tr.kicad_sym smbj28ca-tr: symbol repaired (D_Zener, cathode pad 1) · Ray 2d ago
smbj28ca-tr.lbr smbj28ca-tr: symbol repaired (D_Zener, cathode pad 1) · Ray 2d ago
smbj28ca-tr.step Publish 0.1.0 · Ray 15d ago

SMBJ28CA-TR

STMicroelectronics · TVS · SMB(DO-214AA)

SMBJ28CA-TR from STMicroelectronics, in a SMB(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 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 STMicroelectronics
Package SMB(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
Peak pulse power dissipation PPP 600 W Tj initial = Tamb, 25 °C (10/1000 µs) 2
Storage temperature range Tstg -65 150 °C 2
Operating junction temperature range Tj -55 150 °C 2
Maximum lead temperature for soldering TL 260 °C during 10 s 2
Thermal resistance junction to leads Rth(j-l) 20 °C/W 2
Thermal resistance junction to ambient Rth(j-a) 100 °C/W on recommended pad layout 2
Leakage current at VRM IRM 0.2 µA VRM = 28 V, 25 °C 3
Leakage current at VRM IRM 1 µA VRM = 28 V, 85 °C 3
Stand-off voltage VRM 28 V 3
Breakdown voltage VBR 31.1 32.7 V @ IR = 1 mA, pulse test tp < 50 ms 3
Clamping voltage 10/1000 µs VCL 45.4 V @ IPP = 13.8 A, 10/1000 µs 3
Dynamic resistance 10/1000 µs RD 0.802 Ω 10/1000 µs 3
Clamping voltage 8/20 µs VCL 59 V @ IPP = 68 A, 8/20 µs 3
Dynamic resistance 8/20 µs RD 0.363 Ω 8/20 µs 3
Voltage temperature coefficient αT 9.8 10-4/°C 3

CAD (KiCad official)

  • Symbol: SMBJ28CA-TR
  • Footprint: Diode_SMD:D_SMB
  • 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
  • 3D model files: smbj28ca-tr-etched.step / smbj28ca-tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smbj28ca-tr.step / smbj28ca-tr.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (10 pp, sha256 9662412d67b9544e, retrieved 2026-10-22, tier: manufacturer)
  • 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