component
MMBZ5230B
Public Made by Adomby adom
Changjing Zener Diodes, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 8d ago |
| viewers | 8d ago |
| mmbz5230b-etched.glb | 8d ago |
| mmbz5230b-etched.step | 8d ago |
| mmbz5230b-hero.glb | 8d ago |
| mmbz5230b-hero.overlay.json | 8d ago |
| mmbz5230b.glb | 8d ago |
| mmbz5230b.kicad_mod | 8d ago |
| mmbz5230b.kicad_sym | 8d ago |
| mmbz5230b.lbr | 8d ago |
| mmbz5230b.step | 8d ago |
| package.json | 8d ago |
| page.json | 8d ago |
| README.md | 8d ago |
MMBZ5230B
Changjing · Zener Diodes · SOT-23
MMBZ5230B from Changjing, in a SOT-23. 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 | Zener diode anode; MMBZ5230B has a nominal Zener voltage of 4.7 V (4.47 to 4.94 V) at IZT = 20 mA, and forward voltage is 0.9 V at IF = 10 mA. |
| 2 | NC | unconnected | Not connected; the internal diode schematic shows pin 2 with no connection to the diode. |
| 3 | K | passive | Zener diode cathode; power dissipation is limited to 300 mW and junction temperature to 150 °C. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-23 |
| 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 (MMBZ5230B, KG5) | VZ | 4.47 | 4.7 | 4.94 | V | IZT = 20 mA; short pulse (Note 1) | 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 | VF | 0.9 | V | IF = 10 mA | 1 | ||
| Power dissipation | PD | 300 | mW | 1 | |||
| Junction temperature | Tj | 150 | ℃ | 1 | |||
| Storage temperature range | TVWJ | -55 | 150 | ℃ | 1 | ||
| Thermal resistance, junction to ambient | R JA | 417 | ℃/W | 1 |
CAD (KiCad official)
- Symbol:
MMBZ5230B - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
mmbz5230b-etched.step/mmbz5230b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmbz5230b.step/mmbz5230b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (5 pp, sha256
aaf766a75da5fd05, retrieved 2026-10-19, 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).