component
MMBZ5238B
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 | 15d ago |
| viewers | 15d ago |
| mmbz5238b-etched.glb | 15d ago |
| mmbz5238b-etched.step | 15d ago |
| mmbz5238b-hero.glb | 15d ago |
| mmbz5238b-hero.overlay.json | 15d ago |
| mmbz5238b.glb | 15d ago |
| mmbz5238b.kicad_mod | 15d ago |
| mmbz5238b.kicad_sym | 15d ago |
| mmbz5238b.lbr | 15d ago |
| mmbz5238b.step | 15d ago |
| package.json | 15d ago |
| page.json | 15d ago |
| README.md | 15d ago |
MMBZ5238B
Changjing · Zener Diodes · SOT-23
MMBZ5238B 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 anode, shown on the page 1 symbol as the diode arrow side; the MMBZ5238B has a nominal Vz of 8.7 V (8.27 to 9.14 V) at Izt = 20 mA. |
| 2 | NC | unconnected | No internal connection; pin 2 is drawn as an open, unconnected terminal in the page 1 symbol. |
| 3 | K | passive | Zener cathode, on the bar side of the symbol; it goes positive relative to the anode in breakdown, and the device is rated for 300 mW power dissipation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-23 |
| Category | Diodes |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
MMBZ5238B - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
mmbz5238b-etched.step/mmbz5238b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmbz5238b.step/mmbz5238b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (5 pp, sha256
04d5d18bbbcf95e8, retrieved 2026-10-09, 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).