component
CJSMF28A
Public Made by Adomby adom
Changjing ESD And Surge Protection (TVS/ESD), SOD-123FL. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
main
CJSMF28A
Changjing · ESD And Surge Protection (TVS/ESD) · SOD-123FL
CJSMF28A from Changjing, in a SOD-123FL. 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 | Changjing |
| Package | SOD-123FL |
| 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 (unidirectional, CJSMF28A) | VBR | 31.22 | 34.38 | V | Test current IT(mA) = 1, unidirectional column | 2 | |
| Max reverse leakage (unidirectional) | IR | 5 | uA | @VRWM, unidirectional column | 2 | ||
| Max peak pulse current (unidirectional) | IPP | 4.4 | A | 2 | |||
| Max clamping voltage (unidirectional) | VC | 44.9 | V | @Ipp | 2 | ||
| Peak pulse power dissipation | PPPM | 200 | W | with a 10/1000us waveform | 1 | ||
| Power dissipation | PD | 1 | W | On infinite heat sink at TL=75℃ | 1 | ||
| Peak forward surge current | IFSM | 20 | A | 8.3 ms single half sine-wave uni-directional only (note 2) | 1 | ||
| Operating junction and storage temperature range | TJ,TSTG | -55 | 150 | ℃ | 1 | ||
| Maximum instantaneous forward voltage | VF | 3.5 | V | at 25A for uni-directional only | 1 | ||
| Thermal resistance junction to lead | RθJL | 100 | ℃/W | junction to lead TL=50℃ | 1 | ||
| Thermal resistance junction to ambient | RθJA | 200 | ℃/W | junction to ambient TA=25℃ | 1 |
CAD (KiCad official)
- Symbol:
CJSMF28A - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123FL (KiCad packages3D, STEP)
- 3D model files:
cjsmf28a-etched.step/cjsmf28a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cjsmf28a.step/cjsmf28a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (5 pp, sha256
0e3445de771b166a, retrieved 2026-10-15, 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).
# CJSMF28A
**Changjing** · ESD And Surge Protection (TVS/ESD) · SOD-123FL
CJSMF28A from Changjing, in a SOD-123FL. 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 | Changjing |
| Package | SOD-123FL |
| 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 (unidirectional, CJSMF28A) | VBR | 31.22 | | 34.38 | V | Test current IT(mA) = 1, unidirectional column | 2 |
| Max reverse leakage (unidirectional) | IR | | | 5 | uA | @VRWM, unidirectional column | 2 |
| Max peak pulse current (unidirectional) | IPP | | | 4.4 | A | | 2 |
| Max clamping voltage (unidirectional) | VC | | | 44.9 | V | @Ipp | 2 |
| Peak pulse power dissipation | PPPM | | | 200 | W | with a 10/1000us waveform | 1 |
| Power dissipation | PD | | | 1 | W | On infinite heat sink at TL=75℃ | 1 |
| Peak forward surge current | IFSM | | | 20 | A | 8.3 ms single half sine-wave uni-directional only (note 2) | 1 |
| Operating junction and storage temperature range | TJ,TSTG | -55 | | 150 | ℃ | | 1 |
| Maximum instantaneous forward voltage | VF | | | 3.5 | V | at 25A for uni-directional only | 1 |
| Thermal resistance junction to lead | RθJL | | | 100 | ℃/W | junction to lead TL=50℃ | 1 |
| Thermal resistance junction to ambient | RθJA | | | 200 | ℃/W | junction to ambient TA=25℃ | 1 |
## CAD (KiCad official)
- Symbol: `CJSMF28A`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123FL (KiCad packages3D, STEP)
- 3D model files: `cjsmf28a-etched.step` / `cjsmf28a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cjsmf28a.step` / `cjsmf28a.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Changjing datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602919578246787072) (5 pp, sha256 `0e3445de771b166a`, retrieved 2026-10-15, 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](docs/cjsmf28a-datasheet.pdf)