SMBJ28CAHM4G
Public Made by Adomby 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.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗PCB Footprint
Open full view ↗Datasheet
Open in new tab ↗Contents
README
markdownSMBJ28CAHM4G
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smbj28cahm4g.step/smbj28cahm4g.glbare 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, primarycathode-band convention(convention), consensusoff(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).