component
MMSZ5226BQ-7-F
Public Made by Adomby adom
Diodes Incorporated 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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Contents
README
markdownMMSZ5226BQ-7-F
Diodes Incorporated · Zener Diodes · SOD-123
MMSZ5226BQ-7-F from Diodes Incorporated, 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 terminal, the end marked with the cathode band; for the MMSZ5226B the Zener voltage is 3.3V nominal (3.14V min to 3.47V max) at IZT = 20mA. |
| 2 | A | passive | Anode terminal, the end opposite the cathode band; forward voltage is 0.9V at IF = 10mA, and power dissipation is 500mW at TL = +75°C. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| 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 (nominal) | VZ | 3.14 | 3.3 | 3.47 | V | @ IZT = 20 mA | 2 |
| Maximum Zener impedance | ZZT | 28 | Ω | @ IZT = 20 mA, f = 1 kHz | 2 | ||
| Maximum Zener impedance (knee) | ZZK | 1600 | Ω | @ IZK = 0.25 mA, f = 1 kHz | 2 | ||
| Maximum reverse leakage current | IR | 25 | µA | @ VR = 1.0 V | 2 | ||
| Forward voltage | VF | 0.9 | V | @ IF = 10 mA | 2 | ||
| Power dissipation | PD | 500 | mW | @ TL = +75°C (Note 4) | 2 | ||
| Power dissipation | PD | 370 | mW | @ TA = +25°C (Note 5) | 2 | ||
| Thermal resistance, junction to ambient air | RθJA | 338 | °C/W | Note 5: FR-4 PCB, 1 inch copper pad | 2 | ||
| Operating and storage temperature range | TJ, TSTG | -65 | 150 | °C | 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 | Terminals: Matte Tin Finish Annealed over Alloy 42 Leadframe (Lead Free Plating). Solderable per MIL-STD-202, Method 208 | 1 |
CAD (KiCad official)
- Symbol:
MMSZ5226BQ-7-F - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
mmsz5226bq-7-f-etched.step/mmsz5226bq-7-f-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmsz5226bq-7-f.step/mmsz5226bq-7-f.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (5 pp, sha256
7c7ac7a58521db27, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).