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BZX84B12Q-7-F

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

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BZX84B12Q-7-F

Diodes Incorporated · Zener Diodes · SOT-23-3

BZX84B12Q-7-F from Diodes Incorporated, in a SOT-23-3. 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, the bottom-left terminal in the device schematic (Top View).
2 NC unconnected No internal connection; the bottom-right terminal in the device schematic has no diode connection.
3 K passive Cathode of the zener diode, the single top terminal in the device schematic; the 12V (±2%, 11.8V to 12.2V at IZT = 5mA) zener voltage is measured here.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-23-3
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 11.8 12 12.2 V @ IZT = 5.0 mA (Note 7) 2
Temperature coefficient 6 10 mV/°C @ IZT = 5.0 mA 2
Maximum Zener impedance ZZT 25 Ω @ IZT = 5.0 mA, f = 1 kHz 2
Maximum Zener impedance ZZK 150 Ω @ IZK = 1.0 mA, f = 1 kHz 2
Maximum reverse current IR 0.1 µA @ VR = 8.0 V (Note 7) 2
Power dissipation PD 300 mW Note 5: device on FR-4 PCB with recommended pad layout 2
Power dissipation PD 350 mW Note 6: valid provided the terminals are kept at ambient temperature 2
Thermal resistance, junction to ambient air RθJA 417 °C/W Note 5: device on FR-4 PCB with recommended pad layout 2
Thermal resistance, junction to ambient air RθJA 357 °C/W Note 6: valid provided the terminals are kept at ambient temperature 2
Operating and storage temperature range TJ, TSTG -65 150 °C 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: Solderable per MIL-STD-202, Method 208 Lead-Free Plating (Matte Tin Finish Annealed over Alloy 42 Leadframe). 1

CAD (KiCad official)

  • Symbol: BZX84B12Q-7-F
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3 (KiCad packages3D, STEP)
  • 3D model files: bzx84b12q-7-f-etched.step / bzx84b12q-7-f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bzx84b12q-7-f.step / bzx84b12q-7-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 d7505f68264bd157, retrieved 2026-10-18, 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