component
BZX84C12Q
Public Made by Adomby adom
Yangzhou Yangjie Elec Tech Zener Diodes, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownBZX84C12Q
Yangzhou Yangjie Elec Tech · Zener Diodes · SOT-23
BZX84C12Q from Yangzhou Yangjie Elec Tech, 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; for BZX84C12Q, VZ is 11.4V min, 12V typ and 12.7V max at IZT=5mA. |
| 2 | NC | unconnected | Pin 2 is shown on the SOT-23 package symbol with no internal connection to the diode. |
| 3 | K | passive | Cathode of the Zener diode; maximum power dissipation is 350mW and maximum forward voltage is 0.9V at IF=10mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| 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 (BZX84C12Q row) | VZ | 11.4 | 12 | 12.7 | V | IZT = 5 mA | 2 |
| Zener voltage tolerance (VZ) | -5 | 5 | % | approximately, printed as ±5% | 1 | ||
| Zener dynamic impedance (Zzt) | Zzt | 25 | Ω | IZt = 5 mA | 2 | ||
| Zener dynamic impedance (Zzk) | Zzk | 150 | Ω | Izk = 1.0 mA | 2 | ||
| Reverse leakage current | IR | 0.1 | μA | VR = 8.0 V | 2 | ||
| Typical temperature coefficient | 6 | 10 | mV/℃ | IZTC = 5 mA | 2 | ||
| Power dissipation | PD | 350 | mW | Ta=25℃ | 1 | ||
| Maximum forward voltage | VF | 0.9 | V | IF=10mAdc | 1 | ||
| Storage temperature range | Tstg | -55 | 150 | °C | 1 | ||
| Junction temperature | TJ | -55 | 150 | °C | 1 | ||
| Thermal resistance junction to ambient air | RθJA | 357 | °C/W | 1 |
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 |
|---|---|---|---|---|
| housing | black | 4. Body color: Black | 5 | |
| contacts | tin | ● Terminals: Tin plated leads, solderable per J-STD-002 and JESD22-B102 | 1 |
CAD (KiCad official)
- Symbol:
BZX84C12Q - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
bzx84c12q-etched.step/bzx84c12q-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bzx84c12q.step/bzx84c12q.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Yangzhou Yangjie Elec Tech datasheet (6 pp, sha256
6ee6bf4524a8b88e, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).