component

1N4743APF

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ST(Semtech) Zener Diodes, DO-41. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentdiodes1n4743apffactory-2.0.0extractor-text

Verified 1N4743APF

by Ray · last 30 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

30 Oct 2026RayPublished by the parts factory: tier lcsc, 2 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: 1N4743APF · DO-41 · 2 pins
  • ✓copper: 2 copper pads, none touching another net
  • ✓datasheet: all 2 pin names found in the 5-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: D_DO-41_SOD81_P10.16mm_Horizontal
  • ✓files: 6 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-k31ri28x/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 1 records
  • •package_fit (skip): the datasheet dimensions give no height or body size to compare (datasheet p.1)
  • ✓pads: 2 pins = 2 pads
  • ✓pose: 1 STEP(s) Z-up, seated, centred
  • ✓symbol: 2 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ 1n4743apf.kicad_sym✓ 1n4743apf.kicad_mod✓ 1n4743apf.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 20h ago
viewers 1n4743apf: viewers · Ray 20h ago
1n4743apf-hero.glb Publish 0.1.0 · Ray 20h ago
1n4743apf-hero.overlay.json Publish 0.1.0 · Ray 20h ago
1n4743apf.glb Publish 0.1.0 · Ray 20h ago
1n4743apf.kicad_mod Publish 0.1.0 · Ray 20h ago
1n4743apf.kicad_sym Publish 0.1.0 · Ray 20h ago
1n4743apf.lbr Publish 0.1.0 · Ray 20h ago
1n4743apf.step Publish 0.1.0 · Ray 20h ago
package.json Publish 0.1.0 · Ray 20h ago
page.json Set visibility: public · Ray 20h ago
README.md Publish 0.1.0 · Ray 20h ago
verification.json Verified: Published by the parts factory: tier lcsc, 2 pins · Ray 20h ago

1N4743APF

ST(Semtech) · Zener Diodes · DO-41

1N4743APF 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, marked by the cathode band on the DO-41 glass case; the zener (reverse breakdown) voltage of 13 V nominal (12.35 V to 13.65 V at IZT = 19 mA) appears with this pin positive relative to the anode.
2 A passive Anode, the lead opposite the cathode band on the DO-41 glass case; forward voltage is max 1.2 V at IF = 200 mA.

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 (nominal) VZnom 13 V 3
Zener Voltage Tolerance -5 5 % Suffix A 1
Zener Voltage VZT 12.35 13.65 V at IZT = 19 mA, Ta = 25℃, tp = 20 ms 3
Zener Test Current IZT 19 mA Ta = 25℃ 3
Dynamic Resistance ZZT 10 Ω at IZT 3
Dynamic Resistance (knee) ZZK 700 Ω at IZK = 0.25 mA 3
Reverse Current IR 5 µA at VR = 9.9 V 3
Maximum Surge Current IZSM 344 mA 1/2 square wave, 1/120 s, superimposed on IZT 3
Maximum Regulator Current IZM 69 mA Leads at 8 mm from case kept at ambient temperature 3
Temperature coefficient of Zener voltage 0.05 0.085 %/℃ at IZT 3
Forward Voltage VF 1.2 V IF = 200 mA, Ta = 25℃ 3
Power Dissipation Ptot 1 W Ta = 25℃, leads at 8 mm from case kept at ambient temperature 1
Junction Temperature Tj 175 ℃ Ta = 25℃ 1
Storage Temperature Range Tstg -65 175 ℃ Ta = 25℃ 1
Thermal Resistance Junction to Ambient Air RθJA 150 ℃/W Leads at 8 mm from case kept at ambient temperature 1

CAD (KiCad official)

  • Symbol: 1N4743APF
  • 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 2026-10-30, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-5-5 (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