component
MMSZ5241B-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
markdownMMSZ5241B-7-F
Diodes Incorporated · Zener Diodes · SOD-123
MMSZ5241B-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 (marked with cathode band); for the 11V MMSZ5241B the Zener voltage is 10.45V min to 11.55V max at IZT = 20mA, and this pin is positive relative to the anode in Zener operation. |
| 2 | A | passive | Anode; forward voltage is 0.9V at IF = 10mA, and power dissipation is 500mW at TL = +75°C (370mW at TA = +25°C on FR-4). |
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 | VZ | 10.45 | 11 | 11.55 | V | @ IZT = 20mA | 2 |
| Maximum Zener Impedance | ZZT | 22 | Ω | @ IZT = 20mA, f = 1KHz | 2 | ||
| Maximum Zener Impedance (knee) | ZZK | 600 | Ω | @ IZK = 0.25mA, f = 1KHz | 2 | ||
| Maximum Reverse Leakage Current | IR | 2 | A | @ VR = 8.4V | 2 | ||
| Forward Voltage | VF | 0.9 | V | IF = 10mA, TA = +25°C | 2 | ||
| Power Dissipation | PD | 500 | mW | @TL = +75°C | 2 | ||
| Power Dissipation | PD | 370 | mW | @TA = +25°C, FR-4 PCB with 1 inch copper pad | 2 | ||
| Operating and Storage Temperature Range | TJ, TSTG | -65 | 150 | °C | 2 | ||
| Thermal Resistance, Junction to Ambient Air | RθJA | 338 | °C/W | Device mounted on FR-4 PCB with 1 inch copper pad layout | 2 | ||
| Thermal Resistance, Junction to Lead | RθJL | 132 | °C/W | Note 4 | 2 | ||
| Test Current | IZT | 20 | mA | 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:
MMSZ5241B-7-F - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
mmsz5241b-7-f-etched.step/mmsz5241b-7-f-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmsz5241b-7-f.step/mmsz5241b-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 2026-10-23, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).