component
MM3Z20BW
Public Made by Adomby adom
JSMSEMI Zener Diodes, SOD-323. 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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README
markdownMM3Z20BW
JSMSEMI · Zener Diodes · SOD-323
MM3Z20BW from JSMSEMI, in a SOD-323. 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 | JSMSEMI |
| Package | SOD-323 |
| 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 Test Current | IZT | 5 | mA | 2 | |||
| Dynamic Impedance | ZZT | 50 | Ω | at IZT | 2 | ||
| Reverse Current | IR | 0.1 | μA | at VR = 15 V | 2 | ||
| Voltage Tolerance | -2 | 2 | % | B-series | 1 | ||
| Forward Voltage | VF | 0.9 | V | IF=10mA, TA = 25°C | 1 | ||
| Power Dissipation | PD | 400 | mW | TA = 25°C | 1 | ||
| Junction Temperature Range | TJ | -55 | 150 | °C | 1 | ||
| Storage Temperature Range | TSTG | -65 | 150 | °C | 1 | ||
| Thermal Resistance Junction-to-Ambient | RθJA | 313 | °C/W | FR4 PCB, single-sided copper, standard footprint | 1 |
CAD (KiCad official)
- Symbol:
MM3Z20BW - Footprint:
Diode_SMD:D_SOD-323 - 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files:
mm3z20bw-etched.step/mm3z20bw-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mm3z20bw.step/mm3z20bw.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: JSMSEMI datasheet (4 pp, sha256
3bb68a1996b0f051, retrieved 2026-10-22, 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).