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ZM4752A

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ST(Semtech) Zener Diodes, LL-41. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.

componentdiodeszm4752afactory-2.0.0extractor-text

Verified ZM4752A

by Ray · last 30 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

30 Oct 2026RayPublished by the parts factory: tier mfr, 2 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: ZM4752A · LL-41 · 2 pins
  • ✓copper: 2 copper pads, none touching another net
  • ✓datasheet: all 2 pin names found in the 3-page datasheet
  • ✓distributor: lcsc C118634, digikey 5399-ZM4752ATR-ND, mouser 821-ZM4752A
  • ✓family: D_MELF
  • ✓files: 6 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-jxdocdss/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 1 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: 1 STEP(s) Z-up, seated, centred
  • ✓symbol: 2 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ zm4752a.kicad_sym✓ zm4752a.kicad_mod✓ zm4752a.step
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Ray Publish 0.1.0 63ac241 3h ago

ZM4752A

ST(Semtech) · Zener Diodes · LL-41

ZM4752A from ST(Semtech), in a LL-41. 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 ST(Semtech)
Package LL-41
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 tolerance (suffix A) -5 5 % suffix A (±5%); standard ±10% 1
Dynamic resistance ZZT 45 Ω at IZT = 7.5 mA; 60 Hz AC at 10% of IZT 2
Dynamic resistance (knee) ZZK 1000 Ω at IZK = 0.25 mA 2
Reverse current IR 5 µA at VR = 25.1 V 2
Maximum surge current IZSM 135 mA maximum peak non-repetitive reverse surge, 1/2 square or sine wave, 1/120 s, superimposed on IZT 2
Maximum regulator current IZM 27 mA valid provided electrodes are kept at ambient temperature 2
Forward voltage VF 1.2 V at IF = 200 mA 1
Power dissipation Ptot 1 W Ta = 25℃; valid provided electrodes are kept at ambient temperature 1
Junction temperature Tj 175 ℃ 1
Storage temperature range Tstg -65 175 ℃ 1
Thermal resistance junction to ambient air RθJA 170 K/W Ta = 25℃; valid provided electrodes are kept at ambient temperature 1
Zener voltage (nominal) VZnom 33 V at IZT = 7.5 mA 2

CAD (KiCad official)

  • Symbol: ZM4752A
  • Footprint: Diode_SMD:D_MELF
  • 3D model: LL-41 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: ST(Semtech) datasheet (3 pp, sha256 ff41c4dbf24547f7, retrieved 2026-10-30, tier: manufacturer)
  • 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