component
BZT52C20S
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.
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BZT52C20S
Changjing · Zener Diodes · SOD-323
BZT52C20S 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 | 18.8 | 20 | 21.2 | V | IZT = 5 mA | 2 |
| Maximum Zener Impedance | ZZT | 55 | Ω | IZT = 5 mA, f = 1kHz | 2 | ||
| Maximum Zener Impedance (knee) | ZZK | 225 | Ω | IZK = 1.0 mA, f = 1kHz | 2 | ||
| Maximum Reverse Current | IR | 0.1 | µA | VR = 14.0 V | 2 | ||
| Typical Temperature Coefficient | 14.4 | 18 | mV/℃ | IZTC = 5 mA | 2 | ||
| Forward Voltage | VF | 0.9 | V | IF = 10mA | 1 | ||
| Power Dissipation | PD | 200 | mW | Ta=25℃, on ceramic PCB | 1 | ||
| Thermal Resistance from Junction to Ambient | RθJA | 625 | ℃/W | 1 | |||
| Junction Temperature | Tj | 150 | ℃ | 1 | |||
| Storage Temperature Range | Tstg | -55 | 150 | ℃ | 1 | ||
| Nominal Zener Test Current | IZT | 5 | mA | 2 |
CAD (KiCad official)
- Symbol:
BZT52C20S - Footprint:
Diode_SMD:D_SOD-323 - 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files:
bzt52c20s-etched.step/bzt52c20s-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bzt52c20s.step/bzt52c20s.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (5 pp, sha256
7ef3255afcefdb65, 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).
# BZT52C20S
**Changjing** · Zener Diodes · SOD-323
BZT52C20S 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 | 18.8 | 20 | 21.2 | V | IZT = 5 mA | 2 |
| Maximum Zener Impedance | ZZT | | | 55 | Ω | IZT = 5 mA, f = 1kHz | 2 |
| Maximum Zener Impedance (knee) | ZZK | | | 225 | Ω | IZK = 1.0 mA, f = 1kHz | 2 |
| Maximum Reverse Current | IR | | | 0.1 | µA | VR = 14.0 V | 2 |
| Typical Temperature Coefficient | | 14.4 | | 18 | mV/℃ | IZTC = 5 mA | 2 |
| Forward Voltage | VF | | | 0.9 | V | IF = 10mA | 1 |
| Power Dissipation | PD | | | 200 | mW | Ta=25℃, on ceramic PCB | 1 |
| Thermal Resistance from Junction to Ambient | RθJA | | | 625 | ℃/W | | 1 |
| Junction Temperature | Tj | | | 150 | ℃ | | 1 |
| Storage Temperature Range | Tstg | -55 | | 150 | ℃ | | 1 |
| Nominal Zener Test Current | IZT | | 5 | | mA | | 2 |
## CAD (KiCad official)
- Symbol: `BZT52C20S`
- Footprint: `Diode_SMD:D_SOD-323`
- 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files: `bzt52c20s-etched.step` / `bzt52c20s-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzt52c20s.step` / `bzt52c20s.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Changjing datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586185313915965440) (5 pp, sha256 `7ef3255afcefdb65`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `cathode-band convention` (convention), consensus `off` (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](docs/bzt52c20s-datasheet.pdf)