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ZM4734A

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by adom

Slkor(SLKORMICRO Elec.) 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.

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ZM4734A

Slkor(SLKORMICRO Elec.) · Zener Diodes · LL-41

ZM4734A from Slkor(SLKORMICRO Elec.), 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 Slkor(SLKORMICRO Elec.)
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 5 % Suffix A; standard tolerance ±10% without suffix 1
Dynamic resistance (Zener impedance) ZZT 5 Ω at IZT = 45 mA; 60 Hz AC at 10% of IZT (footnote 1) 2
Dynamic resistance (knee impedance) ZZK 600 Ω at IZK = 1 mA 2
Reverse current IR 10 µA at VR = 2 V 2
Maximum surge current IZSM 810 mA maximum peak non-repetitive reverse surge, 1/120 s pulse superimposed on IZT (footnote 4) 2
Maximum regulator current IZM 162 mA Ta = 25℃ (footnote 2: electrodes kept at ambient temperature) 2
Power dissipation Ptot 1 W valid provided electrodes are kept at ambient temperature (footnote 1) 1
Junction temperature Tj 175 ℃ 1
Storage temperature range Tstg -65 175 ℃ 1
Thermal resistance junction to ambient air RθJA 170 K/W valid provided electrodes are kept at ambient temperature (footnote 1) 1
Forward voltage VF 1.2 V at IF = 200 mA 1
Zener voltage (nominal) VZnom 5.6 V ZM4734 nominal; tolerance per suffix A (±5%) 2

CAD (KiCad official)

  • Symbol: ZM4734A
  • Footprint: Diode_SMD:D_MELF
  • 3D model: LL-41 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Slkor(SLKORMICRO Elec.) datasheet (3 pp, sha256 ea3e3b30191fadbe, retrieved 2026-10-21, 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