component
MMBZ5230BW-7-F
Public Made by Adomby adom
Diodes Incorporated Zener Diodes, SOT-323. 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
markdownMMBZ5230BW-7-F
Diodes Incorporated · Zener Diodes · SOT-323
MMBZ5230BW-7-F from Diodes Incorporated, in a SOT-323. 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 | A | passive | Anode of the zener diode (bottom-left lead in the Device Schematic); 4.7V nominal zener (4.47V to 4.94V at IZT = 20mA) for the MMBZ5230BW. |
| 2 | NC | unconnected | No internal connection; the bottom-right lead is not connected to the diode in the Device Schematic. |
| 3 | K | passive | Cathode of the zener diode (top lead in the Device Schematic); positive with respect to the anode in zener breakdown, 200mW maximum power dissipation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-323 |
| Category | Diodes |
| Pins | 3 |
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, minimum (MMBZ5230BW, nominal 4.7 V) | VZ | 4.47 | V | @ IZT = 20 mA | 2 | ||
| Zener voltage, maximum (MMBZ5230BW, nominal 4.7 V) | VZ | 4.94 | V | @ IZT = 20 mA | 2 | ||
| Maximum Zener impedance | ZZT | 19 | Ω | @ IZT = 20 mA | 2 | ||
| Maximum Zener impedance (knee) | ZZK | 1900 | Ω | @ IZK = 0.25 mA | 2 | ||
| Maximum reverse leakage current | IR | 5 | μA | @ VR = 2.0 V | 2 | ||
| Forward voltage (listed under Maximum Ratings) | VF | 0.9 | V | @ IF = 10 mA | 2 | ||
| Power dissipation | PD | 200 | mW | Note 6: mounted on FR4 PC board with recommended pad layout | 2 | ||
| Thermal resistance, junction to ambient air | RθJA | 625 | °C/W | Note 6: mounted on FR4 PC board with recommended pad layout | 2 | ||
| Operating and storage temperature range | TJ, TSTG | -65 | 150 | °C | 2 | ||
| Nominal Zener voltage | VZ | 4.7 | V | @ 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:
MMBZ5230BW-7-F - Footprint:
Package_TO_SOT_SMD:SOT-323_SC-70 - 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files:
mmbz5230bw-7-f-etched.step/mmbz5230bw-7-f-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmbz5230bw-7-f.step/mmbz5230bw-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
e002c9bed5a34a64, retrieved 2026-10-17, 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).