SMDJ28A
Public Made by Adomby adom
hongjiacheng ESD And Surge Protection (TVS/ESD), SMC(DO-214AB). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
| Name | Last updated |
|---|---|
| docs | 13d ago |
| viewers | 13d ago |
| package.json | 13d ago |
| page.json | 13d ago |
| README.md | 13d ago |
| smdj28a-etched.glb | 13d ago |
| smdj28a-etched.step | 13d ago |
| smdj28a-hero.glb | 13d ago |
| smdj28a-hero.overlay.json | 13d ago |
| smdj28a.glb | 13d ago |
| smdj28a.kicad_mod | 13d ago |
| smdj28a.kicad_sym | 13d ago |
| smdj28a.lbr | 13d ago |
| smdj28a.step | 13d ago |
SMDJ28A
hongjiacheng · ESD And Surge Protection (TVS/ESD) · SMC(DO-214AB)
SMDJ28A from hongjiacheng, in a SMC(DO-214AB). 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 | hongjiacheng |
| Package | SMC(DO-214AB) |
| 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 (SMDJ28A, unidirectional) | VBR | 31.1 | 34.4 | V | @IT = 1 mA (test current) | 3 | |
| Maximum clamping voltage (SMDJ28A) | VC | 45.4 | V | @IPP = 66.1 A | 3 | ||
| Reverse leakage current (SMDJ28A) | IR | 2 | µA | @VRWM (28 V) | 3 | ||
| Peak pulse power dissipation | PPPM | 3000 | W | 10/1000µs waveform (Fig.1) (Note 1), (Note 2); mounted on 8.0mm x 8.0mm copper pads to each terminal | 1 | ||
| Power dissipation on infinite heat sink | PM(AV) | 6.5 | W | Ta=75°C (Fig.5) | 1 | ||
| Peak forward surge current | IFSM | 300 | A | 8.3ms single half sine wave (Note 3, Fig.5) | 1 | ||
| Operating junction and storage temperature range | TJ, TSTG | -55 | 150 | ℃ | 1 | ||
| Soldering temperature at terminals | 260 | ℃ | 10 seconds at terminals | 1 | |||
| Maximum temperature coefficient of VBR | ΔVBR | 0.1 | %×VBR@25℃×ΔT | Typical maximum, per datasheet feature statement | 1 | ||
| Typical thermal resistance junction to lead | RθJ-L | 15 | ℃/W | Typical | 1 | ||
| Typical thermal resistance junction to ambient | RθJ-A | 75 | ℃/W | Typical | 1 |
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 | •Matte tin lead-free Plated •Meets MSL level 1, per J-STD-020 | 1 |
CAD (KiCad official)
- Symbol:
SMDJ28A - Footprint:
Diode_SMD:D_SMC - 3D model: SMC(DO-214AB) (KiCad packages3D, STEP)
- 3D model files:
smdj28a-etched.step/smdj28a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smdj28a.step/smdj28a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: hongjiacheng datasheet (5 pp, sha256
a3e249276a89ca63, retrieved 2026-10-21, 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).