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1N4755APF

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ST Semtech Zener Diodes, DO-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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1N4755APF

ST Semtech · Zener Diodes · DO-41

1N4755APF 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 range (nominal VZnom 43 V, tolerance A) VZT 40.85 43 45.15 V at IZT = 6 mA; tested with pulses tp = 20 ms 3
Zener voltage tolerance (suffix A) -5 5 % suffix A = ±5% 1
Dynamic resistance ZZT 70 Ω at IZT = 6 mA; 60 Hz AC at 10% of IZT 3
Dynamic resistance at knee current ZZK 1500 Ω at IZK = 0.25 mA; 60 Hz AC at 10% of IZK 3
Reverse current IR 5 µA at VR = 32.7 V 3
Maximum surge current IZSM 110 mA non-repetitive 1/2 square wave or sine pulse of 1/120 s superimposed on IZT 3
Maximum regulator current IZM 22 mA leads 8 mm from case kept at ambient temperature 3
Temperature coefficient 0.06 0.095 %/℃ 3
Forward voltage (maximum) VF 1.2 V at IF = 200 mA 3
Power dissipation Ptot 1 W Ta = 25℃; leads 8 mm from case kept at ambient temperature 1
Junction temperature Tj 175 ℃ 1
Storage temperature range Tstg -65 175 ℃ 1
Thermal resistance junction to ambient air RθJA 150 ℃/W leads 8 mm from case kept at ambient temperature 1

CAD (KiCad official)

  • Symbol: 1N4755APF
  • 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 (5 pp, sha256 dd71dcfee8108242, 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