component
MMSZ5243C
Public Made by Adomby adom
Changjing Zener Diodes, SOD-123. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 9d ago |
| viewers | 9d ago |
| mmsz5243c-etched.glb | 9d ago |
| mmsz5243c-etched.step | 9d ago |
| mmsz5243c-hero.glb | 9d ago |
| mmsz5243c-hero.overlay.json | 9d ago |
| mmsz5243c.glb | 9d ago |
| mmsz5243c.kicad_mod | 9d ago |
| mmsz5243c.kicad_sym | 9d ago |
| mmsz5243c.lbr | 9d ago |
| mmsz5243c.step | 9d ago |
| package.json | 9d ago |
| page.json | 9d ago |
| README.md | 9d ago |
MMSZ5243C
Changjing · Zener Diodes · SOD-123
MMSZ5243C from Changjing, 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| 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 | 12.74 | 13 | 13.26 | V | IZT = 9.5 mA | 2 |
| Maximum Zener impedance | ZZT | 13 | Ω | IZT = 9.5 mA | 2 | ||
| Maximum Zener impedance (knee) | ZZK | 600 | Ω | IZK = 0.25 mA | 2 | ||
| Maximum reverse current | IR | 0.5 | uA | VR = 9.9 V | 2 | ||
| Forward voltage | VF | 0.9 | V | IF = 10 mA, pulsed Tp≤1.0 ms | 1 | ||
| Power dissipation | Pd | 500 | mW | Mounted on 1 in² FR-4 board, 2 oz copper, still air, Ta=25 ℃ | 1 | ||
| Operation junction and storage temperature range | TJ,Tstg | -55 | 150 | ℃ | 1 | ||
| Thermal resistance junction to ambient air | RθJA | 250 | ℃/W | Junction to ambient air | 1 |
CAD (KiCad official)
- Symbol:
MMSZ5243C - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
mmsz5243c-etched.step/mmsz5243c-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmsz5243c.step/mmsz5243c.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (5 pp, sha256
d0ee804c65052055, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarycathode-band convention(convention), consensusoff(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).