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BZX84C33Q-13-F

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Diodes Incorporated Zener Diodes, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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BZX84C33Q-13-F

Diodes Incorporated · Zener Diodes · SOT-23

BZX84C33Q-13-F from Diodes Incorporated, in a SOT-23. 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 A passive Anode of the Zener diode (bottom-left terminal in the device schematic); the 33V nominal Zener (31.0V to 35.0V at IZT = 2.0mA) regulates in reverse from cathode to anode.
2 NC unconnected No internal connection; the bottom-right terminal in the device schematic is drawn with no connection to the diode.
3 K passive Cathode of the Zener diode (top single terminal in the device schematic); it takes the positive voltage in Zener operation.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-23
Category Diodes
Pins 3

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 @ IZT) VZ 31 33 35 V IZT = 2.0 mA 2
Maximum Zener Impedance ZZT 80 Ω f = 1 kHz; IZT = 2.0 mA 2
Maximum Zener Impedance ZZK 325 Ω f = 1 kHz; IZK = 0.5 mA 2
Maximum Reverse Current IR 0.1 µA VR = 23.1 V 2
Temperature Coefficient 27.4 mV/°C @ IZT = 2.0 mA 2
Power Dissipation (Note 6) PD 300 mW Note 6: FR-4 PC board with recommended pad layout 2
Power Dissipation (Note 7) PD 350 mW Note 7: terminals kept at ambient temperature 2
Operating and Storage Temperature Range TJ, TSTG -65 150 °C 2
Thermal Resistance, Junction to Ambient Air (Note 6) RθJA 417 °C/W Note 6: FR-4 PC board with recommended pad layout 2
Thermal Resistance, Junction to Ambient Air (Note 7) RθJA 357 °C/W Note 7: terminals kept at ambient temperature 2
Forward Voltage VF 0.9 V IF = 10 mA 2

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin  Terminals: Matte Tin Finish Annealed over Alloy 42 Leadframe (Lead Free Plating). Solderable per MIL-STD-202, Method 208 1

CAD (KiCad official)

  • Symbol: BZX84C33Q-13-F
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: bzx84c33q-13-f-etched.step / bzx84c33q-13-f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bzx84c33q-13-f.step / bzx84c33q-13-f.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (5 pp, sha256 70c346b571aa2f8b, retrieved 2026-10-20, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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