component
BZT52C18T
Public Made by Adomby adom
MDD（Microdiode Electronics） Zener Diodes, SOD-523. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 2d ago |
| viewers | 2d ago |
| bzt52c18t-etched.glb | 2d ago |
| bzt52c18t-etched.step | 2d ago |
| bzt52c18t-hero.glb | 2d ago |
| bzt52c18t-hero.overlay.json | 2d ago |
| bzt52c18t.glb | 2d ago |
| bzt52c18t.kicad_mod | 2d ago |
| bzt52c18t.kicad_sym | 2d ago |
| bzt52c18t.lbr | 2d ago |
| bzt52c18t.step | 2d ago |
| package.json | 2d ago |
| page.json | 2d ago |
| README.md | 2d ago |
BZT52C18T
MDD（Microdiode Electronics） · Zener Diodes · SOD-523
BZT52C18T from MDD（Microdiode Electronics）, in a SOD-523. 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, identified by the marking bar on the body; the zener is reverse-biased with this pin positive, with VZ nominal 18V (16.8V to 19.1V) at IZT = 5mA. |
| 2 | A | passive | Anode of the zener diode, the end opposite the cathode marking bar. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | MDD（Microdiode Electronics） |
| Package | SOD-523 |
| 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 | 16.8 | 18 | 19.1 | V | IZT = 5 mA | 2 |
| Maximum Zener Impedance | ZZT | 45 | Ω | IZT = 5 mA | 2 | ||
| Maximum Zener Impedance (knee) | ZZK | 225 | Ω | IZK = 1.0 mA | 2 | ||
| Maximum Reverse Current | IR | 0.1 | μA | VR = 12.6 V | 2 | ||
| Typical Temperature Coefficient | 12.4 | 16 | mV/℃ | IZTC = 5 mA | 2 | ||
| Forward Voltage | VF | 0.9 | V | IF = 10 mA | 1 | ||
| Power Dissipation | Pd | 20 | mW | Note 1 | 1 | ||
| Typical thermal resistance, junction to ambient | RθJA | 55 | /W | PCB mounted with 2.0" x 2.0" (5 x 5 cm) copper pads | 1 | ||
| Junction Temperature | Tj | 150 | ℃ | 1 | |||
| Storage Temperature Range | Tstg | -65 | 150 | ℃ | 1 |
CAD (KiCad official)
- Symbol:
BZT52C18T - Footprint:
Diode_SMD:D_SOD-523 - 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files:
bzt52c18t-etched.step/bzt52c18t-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bzt52c18t.step/bzt52c18t.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: MDD（Microdiode Electronics） datasheet (4 pp, sha256
e95e3687fd67bb8f, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-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).