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BZX85C3V3-TR

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Vishay Intertech Zener Diodes, DO-41. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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BZX85C3V3-TR

Vishay Intertech · Zener Diodes · DO-41

BZX85C3V3-TR from Vishay Intertech, 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 identification band on the DO-41 body; Zener voltage 3.1 to 3.5 V (nom. 3.3 V) at IZT1 = 80 mA for BZX85C3V3, with Ptot 1300 mW max.
2 A passive Anode of the Zener diode; admissible Zener current is 300 mA max for BZX85C3V3 with leads kept at ambient temperature 10 mm from case.

Key specifications

Parameter Value
Manufacturer Vishay Intertech
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 VZ 3.1 3.3 3.5 V IZT1 = 80 mA, pulses tp = 5 ms, Tamb = 25 °C 2
Reverse leakage current IR 40 μA VR = 1 V 2
Dynamic resistance ZZ 20 Ω at IZT1 = 80 mA, f = 1 kHz 2
Dynamic resistance (knee) ZZK 400 Ω at IZT2 = 1 mA, f = 1 kHz 2
Temperature coefficient of Zener voltage αVZ -0.08 -0.05 %/°C at IZT1 = 80 mA 2
Admissible Zener current IZ 300 mA leads kept at ambient temperature at 10 mm from case 2
Power dissipation Ptot 1300 mW leads at 4 mm from case kept at ambient temperature 1
Junction temperature Tj 175 °C 1
Storage temperature range Tstg -55 175 °C 1
Thermal resistance junction to ambient RthJA 110 K/W leads at 4 mm from case kept at ambient temperature 1
Test current IZT1 80 mA Tamb = 25 °C 2
Test current IZT2 1 mA Tamb = 25 °C 2

CAD (KiCad official)

  • Symbol: BZX85C3V3-TR
  • 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: Vishay Intertech datasheet (6 pp, sha256 95ae9b8ac65e334f, retrieved 2026-10-23, tier: manufacturer)
  • 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