component
MMSZ5258B
Public Made by Adomby adom
Yangzhou Yangjie Elec Tech Zener Diodes, SOD-123. 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
markdownMMSZ5258B
Yangzhou Yangjie Elec Tech · Zener Diodes · SOD-123
MMSZ5258B from Yangzhou Yangjie Elec Tech, in a SOD-123. 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 terminal at the marked (banded) end of the package and the bar side of the diode symbol; it goes positive of the anode in zener regulation (VZ 34.2 V min, 36 V typ, 37.8 V max at IZT = 3.4 mA for MMSZ5258B). |
| 2 | A | passive | Anode, the terminal opposite the marked band and the triangle side of the diode symbol; forward voltage is 0.9 V at IF = 10 mA, and power dissipation is 500 mW. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| Package | SOD-123 |
| Category | Diodes |
| Pins | 2 |
CAD (KiCad official)
- Symbol:
MMSZ5258B - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
mmsz5258b-etched.step/mmsz5258b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmsz5258b.step/mmsz5258b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Yangzhou Yangjie Elec Tech datasheet (5 pp, sha256
f7748de397005fd5, retrieved 2026-10-09, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).