component
BZT52C22T
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.
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BZT52C22T
MDD（Microdiode Electronics） · Zener Diodes · SOD-523
BZT52C22T 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 BZT52C22T Zener voltage is 22 V nominal (20.8 V to 23.3 V at IZT = 5 mA). |
| 2 | A | passive | Anode, the terminal opposite the cathode bar; forward voltage is 0.9 V at IF = 10 mA and power dissipation is 20 mW as printed in the maximum ratings. |
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 | 20.8 | 22 | 23.3 | V | IZT = 5 mA | 2 |
| Maximum Zener Impedance | ZZT | 55 | Ω | @IZT = 5 mA | 2 | ||
| Maximum Zener Impedance (knee) | ZZK | 250 | Ω | @IZK = 1.0 mA | 2 | ||
| Maximum Reverse Current | IR | 0.1 | μA | @VR = 15.4 V | 2 | ||
| Typical Temperature Coefficient | 16.4 | 20 | mV/℃ | IZTC = 5 mA | 2 | ||
| Forward Voltage | VF | 0.9 | V | IF = 10 mA | 1 | ||
| Power Dissipation | Pd | 20 | mW | Note 1 | 1 | ||
| Junction Temperature | Tj | 150 | ℃ | 1 | |||
| Storage Temperature Range | Tstg | -65 | 150 | ℃ | 1 | ||
| Typical thermal resistance, junction to ambient | RθJA | 55 | /W | Note 1: P.C.B. mounted with 2.0" X 2.0" (5 X 5 cm) copper area pads | 1 | ||
| Nominal Zener Voltage | Vz nom | 22 | V | IZT = 5 mA | 2 |
CAD (KiCad official)
- Symbol:
BZT52C22T - Footprint:
Diode_SMD:D_SOD-523 - 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files:
bzt52c22t-etched.step/bzt52c22t-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bzt52c22t.step/bzt52c22t.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).
# BZT52C22T
**MDD（Microdiode Electronics）** · Zener Diodes · SOD-523
BZT52C22T 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 BZT52C22T Zener voltage is 22 V nominal (20.8 V to 23.3 V at IZT = 5 mA). |
| 2 | A | passive | Anode, the terminal opposite the cathode bar; forward voltage is 0.9 V at IF = 10 mA and power dissipation is 20 mW as printed in the maximum ratings. |
## 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 | 20.8 | 22 | 23.3 | V | IZT = 5 mA | 2 |
| Maximum Zener Impedance | ZZT | | | 55 | Ω | @IZT = 5 mA | 2 |
| Maximum Zener Impedance (knee) | ZZK | | | 250 | Ω | @IZK = 1.0 mA | 2 |
| Maximum Reverse Current | IR | | | 0.1 | μA | @VR = 15.4 V | 2 |
| Typical Temperature Coefficient | | 16.4 | | 20 | mV/℃ | IZTC = 5 mA | 2 |
| Forward Voltage | VF | | | 0.9 | V | IF = 10 mA | 1 |
| Power Dissipation | Pd | | | 20 | mW | Note 1 | 1 |
| Junction Temperature | Tj | | | 150 | ℃ | | 1 |
| Storage Temperature Range | Tstg | -65 | | 150 | ℃ | | 1 |
| Typical thermal resistance, junction to ambient | RθJA | | 55 | | /W | Note 1: P.C.B. mounted with 2.0" X 2.0" (5 X 5 cm) copper area pads | 1 |
| Nominal Zener Voltage | Vz nom | | 22 | | V | IZT = 5 mA | 2 |
## CAD (KiCad official)
- Symbol: `BZT52C22T`
- Footprint: `Diode_SMD:D_SOD-523`
- 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files: `bzt52c22t-etched.step` / `bzt52c22t-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzt52c22t.step` / `bzt52c22t.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [MDD（Microdiode Electronics） datasheet](docs/bzt52c22t-datasheet.pdf) (4 pp, sha256 `e95e3687fd67bb8f`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text), consensus `claude-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).
[Datasheet PDF](docs/bzt52c22t-datasheet.pdf)