component
MM1Z3V9B
Public Made by Adomby adom
Shandong Jingdao Microelectronics Zener Diodes, 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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README
markdownMM1Z3V9B
Shandong Jingdao Microelectronics · Zener Diodes · SOD-123
MM1Z3V9B from Shandong Jingdao Microelectronics, 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 | Cathode | passive | Zener cathode terminal per the PINNING table; the device is rated for 500 mW maximum total power dissipation and Tj/Tstg of -55 to +150 °C. |
| 2 | Anode | passive | Zener anode terminal per the PINNING table; the datasheet gives a forward voltage of 0.9 V at IF = 10 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shandong Jingdao Microelectronics |
| Package | SOD-123 |
| 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 (VZT) for MM1Z3V9B | VZT | 3.82 | 3.9 | 3.98 | V | at IZT; VZT tested with pulses (20 ms) | 2 |
| Zener voltage tolerance | -2 | 2 | % | 1 | |||
| Dynamic impedance (ZZT) | ZZT | 130 | Ω | at IZT | 2 | ||
| Power dissipation | Ptot | 500 | mW | 1 | |||
| Operating and storage temperature range | Tj, Tstg | -55 | 150 | °C | 1 | ||
| Test current (IZT) | IZT | 5 | mA | 2 | |||
| Forward voltage | VF | 0.9 | V | IF = 10 mA | 1 | ||
| Thermal resistance, junction to ambient | RθJA | 340 | °C/W | PCB mounted with 2.0" x 2.0" (5 x 5 cm) copper pads | 1 |
CAD (KiCad official)
- Symbol:
MM1Z3V9B - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
mm1z3v9b-etched.step/mm1z3v9b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mm1z3v9b.step/mm1z3v9b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shandong Jingdao Microelectronics datasheet (3 pp, sha256
b0fd93ec2c97a609, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-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).