component
MMSZ56VBW
Public Made by Adomby adom
XCH(旭昌辉) , 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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Contents
README
markdownMMSZ56VBW
XCH(旭昌辉) · IC · SOD-123
MMSZ56VBW from XCH(旭昌辉), 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 end marked by the band on the package; the Zener voltage VZ is 54.88 V min to 57.12 V max (56 V nominal) at IZT = 2 mA. |
| 2 | A | passive | Anode, the end opposite the cathode band; forward voltage is 900 mV maximum at IF = 10 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | XCH(旭昌辉) |
| Package | SOD-123 |
| Category | |
| 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 (VZ) min | VZ | 54.88 | V | IZT = 2 mA; pulse 10 mS | 2 | ||
| Zener voltage (VZ) nominal | VZ | 56 | V | IZT = 2 mA; pulse 10 mS | 2 | ||
| Zener voltage (VZ) max | VZ | 57.12 | V | IZT = 2 mA; pulse 10 mS | 2 | ||
| Zener voltage tolerance (B series) | -2 | 2 | % | B series; standard tolerance on nominal zener voltage | 1 | ||
| Zener impedance | ZZT | 200 | () | at IZT = 2 mA | 2 | ||
| Zener knee impedance | ZZK | 400 | () | at IZK = 0.5 mA | 2 | ||
| Reverse current | IR | 0.045 | A | VR = 39.2 V | 2 | ||
| Forward voltage | VF | 900 | mV | IF = 10 mA | 2 | ||
| Power dissipation | PD | 500 | mW | TA = 25°C unless otherwise noted | 1 | ||
| Storage temperature range | TSTG | -65 | 150 | °C | 1 | ||
| Operating temperature range | TOPR | -65 | 150 | °C | 1 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | tin | Matte Tin(Sn) Lead Finish Band Indicates Cathode | 1 |
CAD (KiCad official)
- Symbol:
MMSZ56VBW - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
mmsz56vbw-etched.step/mmsz56vbw-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmsz56vbw.step/mmsz56vbw.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: XCH(旭昌辉) datasheet (4 pp, sha256
8c9e05687ff5d8ae, retrieved 2026-10-17, 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).