component
MMSZ9V1BW
Public Made by Adomby 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.
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
markdownMMSZ9V1BW
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 | Matte Tin(Sn) Lead Finish 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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmsz9v1bw.step/mmsz9v1bw.glbare 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, 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).