component

1N4747APF-M

Public Made by Adom

by adom

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

componentdiodes1n4747apf-mfactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
1n4747apf-m / README.md
History Download
Ray Publish 0.1.0 c68fd7d 11h ago

1N4747APF-M

ST(Semtech) · Zener Diodes · DO-41

1N4747APF-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, marked by the cathode band on the DO-41 glass case; for 1N4747APF the Zener voltage is 19 to 21 V (20 V nominal) at IZT = 12.5 mA.
2 A passive Anode of the Zener diode in the DO-41 glass case; maximum power dissipation is 1 W and maximum forward voltage is 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 Range VZT 19 20 21 V at IZT = 12.5 mA, tp = 20 ms 2
Dynamic Resistance ZZT 22 Ω at IZT = 12.5 mA 2
Dynamic Resistance (knee) ZZK 750 Ω at IZK = 0.25 mA 2
Reverse Current IR 5 µA at VR = 15.2 V 2
Maximum Surge Current IZSM 225 mA 2
Maximum Regulator Current IZM 45 mA leads at 8 mm from case kept at ambient temperature 2
Forward Voltage VF 1.2 V IF = 200 mA, Ta = 25℃ 2
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 RθJA 150 ℃/W leads at 8 mm from case kept at ambient temperature 1
Temperature Coefficient of Zener Voltage 0.06 0.09 %/°C at IZT 2
Nominal Zener Voltage Vznom 20 V at IZT = 12.5 mA 2
Test Current IZT 12.5 mA 2

CAD (KiCad official)

  • Symbol: 1N4747APF-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 (3 pp, sha256 75f805f187583a3f, retrieved 2026-10-22, 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