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BZX55C12-TAP

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Vishay Intertech Zener Diodes, DO-35. 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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BZX55C12-TAP

Vishay Intertech · Zener Diodes · DO-35

BZX55C12-TAP from Vishay Intertech, in a DO-35. 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 Vishay Intertech
Package DO-35
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 at IZT1) VZ 11.4 12 12.7 V IZT1 = 5 mA, Tamb = 25 °C 2
Reverse leakage current at Tamb = 25 °C IR 0.1 μA VR = 1 V, Tamb = 25 °C 2
Reverse leakage current at Tamb = 150 °C IR 2 μA VR = 1 V, Tamb = 150 °C 2
Dynamic resistance at IZT1 ZZ 20 Ω IZT1 = 5 mA, f = 1 kHz 2
Dynamic resistance at IZT2 ZZK 90 Ω IZT2 = 9.1 mA, f = 1 kHz 2
Temperature coefficient of VZ TKVZ 0.03 0.11 %/K 2
Forward voltage (max.) VF 1.5 V IF = 200 mA 1
Power dissipation Ptot 500 mW l = 4 mm, TL = 25 °C 1
Junction temperature Tj 175 °C 1
Storage temperature range Tstg -65 175 °C 1
Junction to ambient air thermal resistance RthJA 300 K/W l = 4 mm, TL = constant 1

CAD (KiCad official)

  • Symbol: BZX55C12-TAP
  • Footprint: Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal
  • 3D model: DO-35 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Vishay Intertech datasheet (7 pp, sha256 f8e071683c27dd29, retrieved 2026-10-21, tier: manufacturer)
  • 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