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MMSZ56VBW

Public Made by Adom

by adom

XCH(旭昌辉) , SOD-123. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MMSZ56VBW

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmsz56vbw.step / mmsz56vbw.glb are 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, primary claude-sonnet-5-5 (text+vision), consensus claude-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).

Datasheet PDF