component
AD-BZT52C3V9
Public Made by Adomby adom
Changjing Zener Diodes, SOD-123. 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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AD-BZT52C3V9
Changjing · Zener Diodes · SOD-123
AD-BZT52C3V9 from Changjing, in a SOD-123. 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-123 |
| 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 (minimum) | VZ | 3.7 | V | @ IZT = 5 mA; short test pulse | 2 | ||
| Zener voltage (nominal) | VZ | 3.9 | V | @ IZT = 5 mA; short test pulse (printed as Norm) | 2 | ||
| Zener voltage (maximum) | VZ | 4.1 | V | @ IZT = 5 mA; short test pulse | 2 | ||
| Maximum Zener impedance | ZZT | 90 | Ω | @ IZT = 5 mA | 2 | ||
| Maximum Zener impedance (knee) | ZZK | 600 | Ω | @ IZK = 1.0 mA | 2 | ||
| Maximum reverse current | IR | 3 | µA | @ VR = 1.0 V | 2 | ||
| Temperature coefficient of Zener voltage | -3.5 | 0 | mV/°C | @ IZT = 5 mA | 2 | ||
| Forward voltage | VF | 0.9 | V | @ IF = 10 mA; short test pulse (footnote 1) | 1 | ||
| Power dissipation | PD | 500 | mW | Mounted on 1 inch² FR-4 board, 2oz copper, still air, Ta = 25°C (footnote 2) | 1 | ||
| Thermal resistance, junction to ambient | RθJA | 250 | °C/W | Mounted on 1 inch² FR-4 board, 2oz copper, still air, Ta = 25°C (footnote 2) | 1 | ||
| Operating junction and storage temperature range | Tj, Tstg | -55 | 150 | °C | 1 |
CAD (KiCad official)
- Symbol:
AD-BZT52C3V9 - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
ad-bzt52c3v9-etched.step/ad-bzt52c3v9-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ad-bzt52c3v9.step/ad-bzt52c3v9.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (6 pp, sha256
e735c67e2e48897b, retrieved 2026-11-05, 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).
# AD-BZT52C3V9
**Changjing** · Zener Diodes · SOD-123
AD-BZT52C3V9 from Changjing, in a SOD-123. 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-123 |
| 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 (minimum) | VZ | 3.7 | | | V | @ IZT = 5 mA; short test pulse | 2 |
| Zener voltage (nominal) | VZ | | 3.9 | | V | @ IZT = 5 mA; short test pulse (printed as Norm) | 2 |
| Zener voltage (maximum) | VZ | | | 4.1 | V | @ IZT = 5 mA; short test pulse | 2 |
| Maximum Zener impedance | ZZT | | | 90 | Ω | @ IZT = 5 mA | 2 |
| Maximum Zener impedance (knee) | ZZK | | | 600 | Ω | @ IZK = 1.0 mA | 2 |
| Maximum reverse current | IR | | | 3 | µA | @ VR = 1.0 V | 2 |
| Temperature coefficient of Zener voltage | | -3.5 | | 0 | mV/°C | @ IZT = 5 mA | 2 |
| Forward voltage | VF | | | 0.9 | V | @ IF = 10 mA; short test pulse (footnote 1) | 1 |
| Power dissipation | PD | | | 500 | mW | Mounted on 1 inch² FR-4 board, 2oz copper, still air, Ta = 25°C (footnote 2) | 1 |
| Thermal resistance, junction to ambient | RθJA | | | 250 | °C/W | Mounted on 1 inch² FR-4 board, 2oz copper, still air, Ta = 25°C (footnote 2) | 1 |
| Operating junction and storage temperature range | Tj, Tstg | -55 | | 150 | °C | | 1 |
## CAD (KiCad official)
- Symbol: `AD-BZT52C3V9`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `ad-bzt52c3v9-etched.step` / `ad-bzt52c3v9-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ad-bzt52c3v9.step` / `ad-bzt52c3v9.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Changjing datasheet](docs/ad-bzt52c3v9-datasheet.pdf) (6 pp, sha256 `e735c67e2e48897b`, retrieved 2026-11-05, 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/ad-bzt52c3v9-datasheet.pdf)