component
SMFJ28A
Public Made by Adomby adom
BORN TVS, SOD-123F. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 19d ago |
| viewers | 19d ago |
| package.json | 19d ago |
| page.json | 19d ago |
| README.md | 19d ago |
| smfj28a-etched.glb | 19d ago |
| smfj28a-etched.step | 19d ago |
| smfj28a-hero.glb | 19d ago |
| smfj28a-hero.overlay.json | 19d ago |
| smfj28a.glb | 19d ago |
| smfj28a.kicad_mod | 19d ago |
| smfj28a.kicad_sym | 12d ago |
| smfj28a.lbr | 12d ago |
| smfj28a.step | 19d ago |
SMFJ28A
BORN · TVS · SOD-123F
SMFJ28A from BORN, in a SOD-123F. 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 | BORN |
| Package | SOD-123F |
| 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 | 31.1 | 34.4 | V | @ IT = 1 mA | 3 | |
| Reverse Stand-Off Voltage | VR | 28 | V | 3 | |||
| Maximum Clamping Voltage | VC | 45.4 | V | @ Ipp = 4.4 A | 3 | ||
| Maximum Peak Pulse Current | Ipp | 4.4 | A | 3 | |||
| Maximum Reverse Leakage | IR | 1 | uA | @ VR | 3 | ||
| Test Current | IT | 1 | mA | 3 | |||
| Peak Pulse Power Dissipation | PPPM | 200 | W | TA=+25°C, non-repetitive current pulse 10/1000us, 3x3mm copper pad each terminal | 2 | ||
| Steady State Power Dissipation | PD | 1 | W | Infinite Heat Sink at TA =50°C | 2 | ||
| Peak Forward Surge Current | IFSM | 20 | A | 8.3ms single half sine wave or equivalent square wave, duty cycle=4 per minute maximum | 2 | ||
| Maximum Instantaneous Forward Voltage | VFM | 3.5 | V | at 10A, unidirectional only | 2 | ||
| Operating Junction Temperature Range | TJ | -55 | 150 | °C | 2 | ||
| Storage Temperature Range | TSTG | -55 | 150 | °C | 2 | ||
| Typical Thermal Resistance Junction to Lead | RθJL | 100 | °C/W | 2 | |||
| Typical Thermal Resistance Junction to Ambient | RθJA | 220 | °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 | • Lead Finish: Matte Tin • Case Material: Epoxy Molding Compound | 1 |
CAD (KiCad official)
- Symbol:
SMFJ28A - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123F (KiCad packages3D, STEP)
- 3D model files:
smfj28a-etched.step/smfj28a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smfj28a.step/smfj28a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BORN datasheet (7 pp, sha256
dd8422b2bd24ae70, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarytwo-terminal 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).