component
BZT52C43S
Public Made by Adomby adom
TWGMC Zener Diodes, SOD-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownBZT52C43S
TWGMC · Zener Diodes · SOD-323
BZT52C43S from TWGMC, in a SOD-323. 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 of the zener diode, which goes positive in reverse breakdown; zener voltage range for the BZT52C43S is 40V min to 46V max at IZT = 2 mA, with total power dissipation of 200 mW max. |
| 2 | A | passive | Anode of the zener diode; forward voltage is 0.9 V at IF = 10 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TWGMC |
| Package | SOD-323 |
| 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 (VZT), min | VZT | 40 | V | @ IZT = 2 mA | 2 | ||
| Zener voltage (VZT), max | VZT | 46 | V | @ IZT = 2 mA | 2 | ||
| Maximum Zener impedance | ZZT | 700 | Ω | @ IZT = 2 mA | 2 | ||
| Reverse current | IR | 0.1 | μA | VR = 32 V | 2 | ||
| Power dissipation | PD | 200 | mW | Device mounted on ceramic PCB (Note 1) | 1 | ||
| Operating and storage temperature range | Tj, Tstg | -55 | 150 | °C | 1 | ||
| Forward voltage | VF | 0.9 | V | IF = 10 mA (Note 2) | 1 | ||
| Typical temperature coefficient | 33.4 | mV/°C | @ IZTC | 2 | |||
| Thermal resistance, junction to ambient | RθJA | 625 | °C/W | 1 |
CAD (KiCad official)
- Symbol:
BZT52C43S - Footprint:
Diode_SMD:D_SOD-323 - 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files:
bzt52c43s-etched.step/bzt52c43s-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bzt52c43s.step/bzt52c43s.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TWGMC datasheet (3 pp, sha256
dc5da2c24ed08b06, retrieved 2026-11-02, 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).