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MMSZ9V1BW

Public Made by Adom

by adom

FMS Formosa Microsemi 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.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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MMSZ9V1BW

FMS Formosa Microsemi · Zener Diodes · SOD-123FL

MMSZ9V1BW from FMS Formosa Microsemi, 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 FMS Formosa Microsemi
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) VZ 8.92 9.1 9.28 V IZT = 5 mA; VZ tested under 10 ms pulse (Note 1) 1
Zener voltage tolerance (B series) VZ tolerance -2 2 % B series, standard tolerance on nominal VZ (Note 2) 2
Zener dynamic impedance ZZT 15 Ω @ IZT = 5 mA 1
Zener knee impedance ZZK 94 Ω @ IZK = 1 mA 1
Reverse leakage current IR 0.45 μA @ VR = 6 V 1
Forward voltage VF 900 mV @ IF = 10 mA, for all types 2

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 ƒ Matte Tin(Sn) Lead Finish ƒ Band Indicates Cathode 1

CAD (KiCad official)

  • Symbol: MMSZ9V1BW
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123FL (KiCad packages3D, STEP)
  • 3D model files: mmsz9v1bw-etched.step / mmsz9v1bw-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmsz9v1bw.step / mmsz9v1bw.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: FMS Formosa Microsemi datasheet (4 pp, sha256 8725fab2baedbe03, retrieved 2026-10-16, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary cathode-band convention (convention), consensus off (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