component
MMSZ5260B
Public Made by Adomby adom
SMC Sangdest Microelectronicstronic Nanjing Zener Diodes, SOD-123. 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
markdownMMSZ5260B
SMC Sangdest Microelectronicstronic Nanjing · Zener Diodes · SOD-123
MMSZ5260B from SMC Sangdest Microelectronicstronic Nanjing, 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 | 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 | SMC Sangdest Microelectronicstronic Nanjing |
| 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 |
|---|---|---|---|---|---|---|---|
| Power Dissipation | PD | 500 | mW | Note 1: device mounted on ceramic PCB 7.6 mm x 9.4 mm x 0.87 mm, pad areas 25 mm2 | 1 | ||
| Operating Junction and Storage Temperature Range | TJ,TSTG | -55 | 150 | °C | 1 | ||
| Nominal Zener Voltage tolerance | -5 | 5 | % | 5% nominal Zener voltage (B-suffix family, per Features) | 1 | ||
| Forward Voltage | VF | 0.9 | V | @ IF = 10mA; Note 2: tested with pulses, Tp≤1.0ms | 1 | ||
| Typical Thermal resistance junction to Ambient Air | RθJA | 357 | °C/W | 1 |
CAD (KiCad official)
- Symbol:
MMSZ5260B - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
mmsz5260b-etched.step/mmsz5260b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmsz5260b.step/mmsz5260b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: SMC Sangdest Microelectronicstronic Nanjing datasheet (5 pp, sha256
9ef2436e201fbad2, retrieved 2026-10-19, 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).