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ZMM47PF-M

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ST Semtech Zener Diodes, LL-34. 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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ZMM47PF-M

ST Semtech · Zener Diodes · LL-34

ZMM47PF-M from ST Semtech, in a LL-34. 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-34
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 range VZT 44 47 50 V at IZT = 2.5 mA; tested with pulses tp = 20 ms 2
Maximum dynamic resistance ZZT 110 Ω at IZT = 2.5 mA 2
Maximum dynamic resistance (knee) ZZK 600 Ω at IZK = 0.5 mA 2
Maximum reverse current IR 0.1 µA at VR = 36 V 2
Forward voltage VF 1 V at IF = 100 mA 2
Power dissipation Ptot 500 mW Ta = 25 ℃; leads kept at ambient temperature at a distance of 8 mm from case 1
Junction temperature Tj 175 ℃ 1
Storage temperature range Tstg -55 175 ℃ 1
Thermal resistance junction to ambient RθJA 300 ℃/W leads kept at ambient temperature at a distance of 8 mm from case 1

CAD (KiCad official)

  • Symbol: ZMM47PF-M
  • Footprint: Diode_SMD:D_MiniMELF
  • 3D model: LL-34 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: ST Semtech datasheet (3 pp, sha256 9ef34648f400be5c, retrieved 2026-10-16, 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