component
SMF5942A
Public Made by Adomby adom
Changjing Zener Diodes, 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.
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 11d ago |
| viewers | 11d ago |
| package.json | 11d ago |
| page.json | 11d ago |
| README.md | 11d ago |
| smf5942a-etched.glb | 11d ago |
| smf5942a-etched.step | 11d ago |
| smf5942a-hero.glb | 11d ago |
| smf5942a-hero.overlay.json | 11d ago |
| smf5942a.glb | 11d ago |
| smf5942a.kicad_mod | 11d ago |
| smf5942a.kicad_sym | 11d ago |
| smf5942a.lbr | 11d ago |
| smf5942a.step | 11d ago |
SMF5942A
Changjing · Zener Diodes · SOD-123FL
SMF5942A 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 | Diodes |
| 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 |
|---|---|---|---|---|---|---|---|
| Zener voltage (min / nominal AVE. / max) | VZ | 48.45 | 51 | 53.55 | V | @IZT 7.3 mA | 2 |
| Maximum zener impedance | ZZT | 70 | Ω | @IZT 7.3 mA | 2 | ||
| Maximum zener impedance | ZZK | 1100 | Ω | @IZK 0.25 mA | 2 | ||
| Maximum reverse leakage current | IR | 0.5 | µA | @VR 38.8 V | 2 | ||
| Maximum DC zener current | IZM | 18 | mA | 2 | |||
| Tolerance on nominal zener voltage (standard, suffix A) | -5 | 5 | % | Standard tolerance on nominal zener voltage, note (1) | 2 | ||
| Power dissipation | Pd | 1.5 | W | TL=75℃ | 1 | ||
| Operation junction and storage temperature range | TJ,Tstg | -55 | 150 | ℃ | 1 | ||
| Forward voltage | VF | 1.5 | =200mA | 1 | |||
| Thermal resistance, junction to ambient | RθJA | 170 | ℃/W | Between junction to ambient | 1 | ||
| Thermal resistance, junction to lead | RθJL | 25 | ℃/W | Between junction to lead | 1 |
CAD (KiCad official)
- Symbol:
SMF5942A - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123FL (KiCad packages3D, STEP)
- 3D model files:
smf5942a-etched.step/smf5942a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smf5942a.step/smf5942a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (5 pp, sha256
687e0a4522a0b1ae, 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).