component

AD-MMSZ5254BS

Public Made by Adom

by adom

Changjing Zener Diodes, SOD-323. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.

componentdiodesad-mmsz5254bsfactory-2.0.0extractor-text

Changed since verified AD-MMSZ5254BS

by Ray · last 4 Nov 2026 · 1 record · files changed since
SymbolFootprint3D modelPins

Verification log 1 record

4 Nov 2026RayPublished by the parts factory: tier lcsc, 2 pinschanged since
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: AD-MMSZ5254BS · SOD-323 · 2 pins
  • ✓copper: 2 copper pads, none touching another net
  • ✓datasheet: all 2 pin names found in the 6-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: D_SOD-323
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-3dmzn68c/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 2 pins = 2 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 2 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files! ad-mmsz5254bs.kicad_sym✓ ad-mmsz5254bs.kicad_mod✓ ad-mmsz5254bs.step
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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 3d ago
viewers ad-mmsz5254bs: symbol repaired (D_Zener, cathode pad 1) · Ray 3d ago
ad-mmsz5254bs-etched.glb Publish 0.1.0 · Ray 3d ago
ad-mmsz5254bs-etched.step ad-mmsz5254bs: factory component page (tier=lcsc) · Ray 3d ago
ad-mmsz5254bs-hero.glb ad-mmsz5254bs: hero GLB from the etched model (keeps the MPN mark) · Ray 3d ago
ad-mmsz5254bs-hero.overlay.json Publish 0.1.0 · Ray 3d ago
ad-mmsz5254bs.glb Publish 0.1.0 · Ray 3d ago
ad-mmsz5254bs.kicad_mod Publish 0.1.0 · Ray 3d ago
ad-mmsz5254bs.kicad_sym ad-mmsz5254bs: symbol repaired (D_Zener, cathode pad 1) · Ray 3d ago
ad-mmsz5254bs.lbr ad-mmsz5254bs: symbol repaired (D_Zener, cathode pad 1) · Ray 3d ago
ad-mmsz5254bs.step Publish 0.1.0 · Ray 3d ago
package.json Publish 0.1.0 · Ray 3d ago
page.json Set visibility: public · Ray 3d ago
README.md Publish 0.1.0 · Ray 3d ago
verification.json Verified: Published by the parts factory: tier lcsc, 2 pins · Ray 3d ago

AD-MMSZ5254BS

Changjing · Zener Diodes · SOD-323

AD-MMSZ5254BS from Changjing, in a SOD-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 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-323
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 25.65 27 28.35 V IZT = 5.0 mA; tested with pulses TP ≤ 1.0 ms 2
Maximum Zener impedance ZZT 41 Ω ZZT @ IZT = 5.0 mA; f = 1kHz (footnote 3) 2
Maximum Zener impedance (knee) ZZK 600 Ω ZZK @ IZK = 0.25 mA; f = 1kHz (footnote 3) 2
Maximum reverse current IR 0.1 µA VR = 21 V 2
Forward voltage VF 0.9 V IF = 10 mA; tested with pulses (footnote 1) 1
Power dissipation PD 200 mW Device mounted on ceramic PCB 7.6 mm x 9.4 mm x 0.87 mm, pad area 25 mm2 (footnote 2) 1
Operating junction and storage temperature range Tj, Tstg -55 150 °C 1
Thermal resistance, junction to ambient RθJA 625 °C/W Device mounted on ceramic PCB 7.6 mm x 9.4 mm x 0.87 mm, pad area 25 mm2 (footnote 2) 1

CAD (KiCad official)

  • Symbol: AD-MMSZ5254BS
  • Footprint: Diode_SMD:D_SOD-323
  • 3D model: SOD-323 (KiCad packages3D, STEP)
  • 3D model files: ad-mmsz5254bs-etched.step / ad-mmsz5254bs-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ad-mmsz5254bs.step / ad-mmsz5254bs.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Changjing datasheet (6 pp, sha256 4b88592edad97ad2, retrieved 2026-11-04, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary cathode-band convention (convention), consensus off (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).

Datasheet PDF