component
CJSMF54A
Public Made by Adomby adom
Changjing ESD And Surge Protection (TVS/ESD), SOD-123FL. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownCJSMF54A
Changjing · ESD And Surge Protection (TVS/ESD) · SOD-123FL
CJSMF54A 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, marked by the cathode band on this uni-directional part (CJSMF54A: VRWM 54 V, VBR 60.24-66.25 V at 1 mA, max clamping 86.2 V at 2.3 A IPP). |
| 2 | A | passive | Anode, the end opposite the cathode band; the TVS conducts in reverse from anode to cathode, with 200 W peak pulse power (10/1000us) and max 5 uA leakage at 54 V. |
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 | VBR | 60.24 | 66.25 | V | @IT = 1 mA | 2 | |
| Reverse standoff voltage | VRWM | 54 | V | 2 | |||
| Max reverse leakage | IR | 5 | uA | @VRWM, UNI | 2 | ||
| Max clamping voltage | VC | 86.2 | V | @Ipp = 2.3 A | 2 | ||
| Max peak pulse current | IPP | 2.3 | A | 10/1000us waveform | 2 | ||
| Maximum instantaneous forward voltage | VF | 3.5 | V | at 25A for uni-directional only | 1 | ||
| 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 | 1 | ||
| Operating junction and storage temperature range | TJ,TSTG | -55 | 150 | ℃ | 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:
CJSMF54A - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123FL (KiCad packages3D, STEP)
- 3D model files:
cjsmf54a-etched.step/cjsmf54a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cjsmf54a.step/cjsmf54a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (5 pp, sha256
0e3445de771b166a, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-sonnet-5-5(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).