component
MM1W51
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
markdownMM1W51
Shandong Jingdao Microelectronics · Zener Diodes · SOD-123
MM1W51 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 | Cathode terminal of the zener diode, identified as pin 1 in the PINNING table and the SOD-123 symbol; the datasheet gives no separate electrical limit for this pin. |
| 2 | Anode | passive | Anode terminal of the zener diode, identified as pin 2 in the PINNING table and the SOD-123 symbol; the datasheet gives no separate electrical limit for this pin. |
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), MM1W51 | VZT | 48.6 | 51 | 54 | V | at IZT (test current 5.0 mA per table row); VZT tested with 20 ms pulses | 2 |
| Dynamic impedance (ZZT), MM1W51 | ZZT | 95 | Ω | at IZT = 5.0 mA | 2 | ||
| Power dissipation (PD) | PD | 1 | W | at TL = 75 °C (total power dissipation, series rating) | 1 | ||
| Operating and storage temperature range (Tj, Tstg) | Tj, Tstg | -55 | 150 | °C | 1 | ||
| Thermal resistance, junction to ambient | RθJA | 300 | °C/W | junction to ambient, PCB mounted with 2.0" x 2.0" (5 x 5 cm) copper pads | 1 |
CAD (KiCad official)
- Symbol:
MM1W51 - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
mm1w51-etched.step/mm1w51-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mm1w51.step/mm1w51.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shandong Jingdao Microelectronics datasheet (3 pp, sha256
013135782e49243c, retrieved 2026-10-18, 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).