component
SMF5919A
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.
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
markdownSMF5919A
Changjing · Zener Diodes · SOD-123FL
SMF5919A 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 |
|---|---|---|---|---|---|---|---|
| Nominal zener voltage | VZ | 5.32 | 5.6 | 5.88 | V | @IZT (IZT=66.9 mA) | 2 |
| Standard tolerance on nominal zener voltage | -5 | 5 | % | Standard tolerance on nominal zener voltage (note 1) | 2 | ||
| Maximum zener impedance | ZZT | 2 | Ω | @IZT (IZT=66.9 mA) | 2 | ||
| Maximum zener impedance (knee) | ZZK | 250 | Ω | @IZK (IZK=1.00 mA) | 2 | ||
| Maximum reverse leakage current | IR | 5 | µA | @VR (VR=3.0 V) | 2 | ||
| Maximum DC zener current | IZM | 161 | mA | 2 | |||
| Forward voltage | VF | 1.5 | V | =200mA | 1 | ||
| Power dissipation | Pd | 1.5 | W | TL=75℃ | 1 | ||
| Operation junction and storage temperature range | TJ,Tstg | -55 | 150 | ℃ | 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:
SMF5919A - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123FL (KiCad packages3D, STEP)
- 3D model files:
smf5919a-etched.step/smf5919a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smf5919a.step/smf5919a.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).