component
BZT52C3V9S
Public Made by Adomby adom
Changjing Zener Diodes, SOD-323. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, 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
markdownBZT52C3V9S
Changjing · Zener Diodes · SOD-323
BZT52C3V9S from Changjing, 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| 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 (VZ) at IZT | VZ | 3.7 | 3.9 | 4.1 | V | @ IZT = 5 mA (Note 2) | 2 |
| Maximum Zener Impedance (ZZT) at IZT | ZZT | 90 | Ω | @ IZT = 5 mA (Note 3: f = 1kHz) | 2 | ||
| Maximum Zener Impedance (ZZK) at IZK | ZZK | 600 | Ω | @ IZK = 1.0 mA (Note 3: f = 1kHz) | 2 | ||
| Maximum Reverse Current | IR | 3 | μA | @ VR = 1.0 V (Note 2) | 2 | ||
| Typical Temperature Coefficient | -3.5 | 0 | mV/℃ | @ IZTC = 5 mA | 2 | ||
| Power Dissipation | PD | 200 | mW | Device mounted on ceramic PCB 7.6mm x 9.4mm x 0.87mm with pad areas 25mm2 (Note 1) | 1 | ||
| Storage Temperature Range | -5 | 150 | ℃ | 1 | |||
| Junction Temperature | Tj | 150 | ℃ | 1 | |||
| Thermal Resistance Junction to Ambient | RθJA | 625 | ℃/W | 1 | |||
| Forward Voltage | VF | 0.9 | V | @ IF = 10mA (Note 2) | 1 |
CAD (KiCad official)
- Symbol:
BZT52C3V9S - Footprint:
Diode_SMD:D_SOD-323 - 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files:
bzt52c3v9s-etched.step/bzt52c3v9s-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bzt52c3v9s.step/bzt52c3v9s.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (3 pp, sha256
b2de1300cc5939db, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarycathode-band convention(convention), consensusoff(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).