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BZX2C12PF

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

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BZX2C12PF

ST(Semtech) · Zener Diodes · DO-41

BZX2C12PF 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; Zener voltage 11.4...12.7 V (12 V nominal) at IZT = 41.5 mA, maximum DC Zener current 152 mA.
2 A passive Anode lead of the DO-41 glass case Zener diode; power dissipation 2 W max, VF 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
Maximum Dynamic Resistance at IZT rZjT 4.5 Ω at IZT = 41.5 mA 2
Maximum Dynamic Resistance at IZK rZjK 700 Ω at IZK = 0.25 mA 2
Maximum Reverse Leakage Current IR 1 µA VR = 9.1 V 2
Maximum DC Zener Current IZM 152 mA leads at ambient temperature at 8 mm from case 2
Forward Voltage VF 1.2 V IF = 200 mA 2
Power Dissipation Ptot 2 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 75 ℃/W leads at 8 mm from case kept at ambient temperature 1
Zener Test Current IZT 41.5 mA Tj = 25℃ 2

CAD (KiCad official)

  • Symbol: BZX2C12PF
  • 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 (2 pp, sha256 7816ae8d70cbf200, retrieved 2026-10-23, 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