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1N4751APF-M

ST(Semtech) · Zener Diodes · DO-41

1N4751APF-M from ST(Semtech), in a DO-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 DO-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 VZ 28.5 31.5 V IZT 8.5 mA; Ta = 25 °C; DC test (note 3) 2
Reverse leakage current IR 5 µA VR = 22.8 V; Ta = 25 °C 2
Maximum Zener impedance rZJT 40 Ω IZT 8.5 mA; 60 Hz AC at 10% of IZT (note 1) 2
Maximum Zener impedance at knee rZJK 1000 Ω IZK 0.25 mA (note 1) 2
Maximum surge current IZSM 150 mA Maximum peak non-repetitive reverse surge, 1/120 s, superimposed on IZT (note 4) 2
Maximum regulator current IZM 30 mA 2
Power dissipation Ptot 1 W Leads kept at ambient at 8 mm from case (note 1) 1
Junction temperature Tj 200 °C 1
Storage temperature range TS -65 200 °C 1
Thermal resistance junction to ambient air RthA 170 K/W Leads kept at ambient at 8 mm from case (note 1) 1
Forward voltage VF 1.2 V IF = 200 mA 1
Nominal Zener voltage VZnom 30 V 2

CAD (KiCad official)

  • Symbol: 1N4751APF-M
  • Footprint: Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal
  • 3D model: DO-41 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: ST(Semtech) datasheet (4 pp, sha256 b4504508e5b23338, retrieved 2026-10-17, 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