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BZT52B22
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Slkor SLKORMICRO Elec Zener Diodes, SOD-123. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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BZT52B22
Slkor SLKORMICRO Elec · Zener Diodes · SOD-123
BZT52B22 from Slkor SLKORMICRO Elec, 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, marked "-" on the datasheet drawing and identified by the band on the package body; takes the positive reverse voltage in Zener operation (VZ 21.56-22.44 V at IZT = 5 mA for BZT52B22). |
| 2 | A | passive | Anode, marked "+" on the datasheet drawing at the end opposite the cathode band; forward voltage VF is 0.9 V at IF = 10 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Slkor SLKORMICRO Elec |
| 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 | VZ | 21.56 | 22 | 22.44 | V | @ IZT = 5 mA | 2 |
| Maximum Zener impedance | ZZT | 55 | Ω | @ IZT = 5 mA, f = 1kHz | 2 | ||
| Maximum Zener impedance (knee) | ZZK | 250 | Ω | @ IZK = 1.0 mA, f = 1kHz | 2 | ||
| Maximum reverse current | IR | 0.1 | μA | @ VR = 15.4 V | 2 | ||
| Typical temperature coefficient | θVZ | 16.4 | 20 | mV/°C | @ IZTC = 5 mA | 2 | |
| Power dissipation | Pd | 350 | mW | Mounted on ceramic PCB (Note 1) | 1 | ||
| Forward voltage | VF | 0.9 | V | @ IF = 10 mA (Note 2) | 1 | ||
| Thermal resistance, junction to ambient | RθJA | 357 | /W | Junction to ambient | 1 | ||
| Junction temperature | Tj | 150 | ℃ | 1 | |||
| Storage temperature range | Tstg | -55 | 150 | ℃ | 1 |
CAD (KiCad official)
- Symbol:
BZT52B22 - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
bzt52b22-etched.step/bzt52b22-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bzt52b22.step/bzt52b22.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Slkor SLKORMICRO Elec datasheet (4 pp, sha256
03de03b9091f028e, retrieved 2026-10-17, 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).
# BZT52B22
**Slkor SLKORMICRO Elec** · Zener Diodes · SOD-123
BZT52B22 from Slkor SLKORMICRO Elec, 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, marked "-" on the datasheet drawing and identified by the band on the package body; takes the positive reverse voltage in Zener operation (VZ 21.56-22.44 V at IZT = 5 mA for BZT52B22). |
| 2 | A | passive | Anode, marked "+" on the datasheet drawing at the end opposite the cathode band; forward voltage VF is 0.9 V at IF = 10 mA. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Slkor SLKORMICRO Elec |
| 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 | VZ | 21.56 | 22 | 22.44 | V | @ IZT = 5 mA | 2 |
| Maximum Zener impedance | ZZT | | | 55 | Ω | @ IZT = 5 mA, f = 1kHz | 2 |
| Maximum Zener impedance (knee) | ZZK | | | 250 | Ω | @ IZK = 1.0 mA, f = 1kHz | 2 |
| Maximum reverse current | IR | | | 0.1 | μA | @ VR = 15.4 V | 2 |
| Typical temperature coefficient | θVZ | 16.4 | | 20 | mV/°C | @ IZTC = 5 mA | 2 |
| Power dissipation | Pd | | | 350 | mW | Mounted on ceramic PCB (Note 1) | 1 |
| Forward voltage | VF | | | 0.9 | V | @ IF = 10 mA (Note 2) | 1 |
| Thermal resistance, junction to ambient | RθJA | | | 357 | /W | Junction to ambient | 1 |
| Junction temperature | Tj | | | 150 | ℃ | | 1 |
| Storage temperature range | Tstg | -55 | | 150 | ℃ | | 1 |
## CAD (KiCad official)
- Symbol: `BZT52B22`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `bzt52b22-etched.step` / `bzt52b22-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzt52b22.step` / `bzt52b22.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Slkor SLKORMICRO Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590233009795194880) (4 pp, sha256 `03de03b9091f028e`, retrieved 2026-10-17, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-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).
[Datasheet PDF](docs/bzt52b22-datasheet.pdf)