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ZM4734APF-M

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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.

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ZM4734APF-M

ST(Semtech) · Zener Diodes · LL-41

ZM4734APF-M 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
Nominal Zener voltage Vz 5.6 V at IZT 2
Zener voltage tolerance (suffix A) -5 5 % suffix A 1
Test current IZT 45 mA 2
Maximum Zener impedance at IZT ZZT 5 Ω at IZT 2
Maximum Zener impedance at IZK ZZK 600 Ω at IZK = 1 mA 2
Maximum reverse leakage current IR 10 μA at VR = 2 V, TA = 25°C 2
Surge current IR 810 mA Tested with pulses tp = 20 ms 2
Maximum regulator current IZM 162 mA electrodes kept at ambient temperature 2
Forward voltage VF 1.2 V IF = 200mA, Tamb = 25°C 1
Thermal resistance junction to ambient air RthA 170 K/W electrodes kept at ambient temperature 1
Junction temperature Tj 175 °C Ta = 25°C 1
Storage temperature range TS -65 175 °C Ta = 25°C 1

CAD (KiCad official)

  • Symbol: ZM4734APF-M
  • 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 260d3c825d457f5e, retrieved 2026-10-23, 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