component
BZT52B20
Public Made by Adomby adom
NH Zener Diodes, SOD-123. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownBZT52B20
NH · Zener Diodes · SOD-123
BZT52B20 from NH, 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 by the white band on the package; the Zener voltage of BZT52B20 is 20.0V nominal (19.60V to 20.40V) at Izt=5mA. |
| 2 | A | passive | Anode; maximum power dissipation is 500mW and forward voltage is 0.9V maximum at IF=10mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | NH |
| 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) at Izt | Vz | 19.6 | 20 | 20.4 | V | @Izt | 2 |
| Zener voltage tolerance (B series) | -2 | 2 | % | 1 | |||
| Maximum Zener impedance at Izt | Zzt | 55 | Ω | @Izt | 2 | ||
| Maximum Zener impedance at Izk | Zzk | 225 | Ω | @Izk | 2 | ||
| Maximum reverse current | IR | 0.1 | uA | VR 14.0 V | 2 | ||
| Maximum instantaneous forward voltage | VF | 0.9 | V | IF=10mA, pulse width < 10 ms (Note 2) | 1 | ||
| Power dissipation | PD | 500 | mW | Note 1: device mounted on ceramic PCB 7.6mm x 9.4mm x 0.87mm with pad areas 25mm2 | 1 | ||
| Operating temperature range | TOPR | -55 | 150 | °C | 1 | ||
| Storage temperature range | TSTG | -55 | 150 | °C | 1 | ||
| Thermal resistance, junction to ambient air | RθJA | 400 | °C/W | Note 1: device mounted on ceramic PCB | 1 |
CAD (KiCad official)
- Symbol:
BZT52B20 - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
bzt52b20-etched.step/bzt52b20-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bzt52b20.step/bzt52b20.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: NH datasheet (6 pp, sha256
7d743f0a19061d11, retrieved 2026-10-18, 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).