component
BZT52-B12J
Public Made by Adomby adom
Nexperia Zener Diodes, SOD-123. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 9d ago |
| viewers | 9d ago |
| bzt52-b12j-etched.glb | 9d ago |
| bzt52-b12j-etched.step | 9d ago |
| bzt52-b12j-hero.glb | 9d ago |
| bzt52-b12j-hero.overlay.json | 9d ago |
| bzt52-b12j.glb | 9d ago |
| bzt52-b12j.kicad_mod | 9d ago |
| bzt52-b12j.kicad_sym | 9d ago |
| bzt52-b12j.lbr | 9d ago |
| bzt52-b12j.step | 9d ago |
| package.json | 9d ago |
| page.json | 9d ago |
| README.md | 9d ago |
BZT52-B12J
Nexperia · Zener Diodes · SOD-123
BZT52-B12J from Nexperia, 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 marking bar on the package indicates the cathode. |
| 2 | A | passive | Anode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| 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 |
|---|---|---|---|---|---|---|---|
| Working voltage (Zener voltage), min | VZ | 11.8 | V | IZ = 5 mA; Tj = 25 °C unless otherwise specified | 4 | ||
| Working voltage (Zener voltage), max | VZ | 12.2 | V | IZ = 5 mA; Tj = 25 °C unless otherwise specified | 4 | ||
| Maximum differential resistance | rdif | 90 | Ω | IZ = 5 mA | 4 | ||
| Maximum differential resistance | rdif | 10 | Ω | IZ = 1 mA | 4 | ||
| Reverse current | IR | 0.1 | µA | VR = 8 V | 4 | ||
| Temperature coefficient, min | SZ | 6 | mV/K | Tj = 25 °C unless otherwise specified (test current not unambiguously printed for this column) | 4 | ||
| Temperature coefficient, max | SZ | 10 | mV/K | Tj = 25 °C unless otherwise specified (test current not unambiguously printed for this column) | 4 | ||
| Diode capacitance | Cd | 85 | pF | f = 1 MHz; VR = 0 V | 4 | ||
| Non-repetitive peak reverse current | IZSM | 2.5 | A | tp = 100 µs; Tamb = 25 °C | 4 | ||
| Forward voltage | VF | 0.9 | V | IF = 10 mA; pulse test tp ≤ 300 µs; δ ≤ 0.02 | 3 | ||
| Continuous forward current | IF | 250 | mA | 3 | |||
| Non-repetitive peak reverse power dissipation | PZSM | 40 | W | tp = 100 µs; square wave; Tamb = 25 °C prior to surge | 3 | ||
| Total power dissipation | Ptot | 590 | mW | Tamb ≤ 25 °C; FR4 PCB, mounting pad for cathode 1 cm² | 3 | ||
| Total power dissipation | Ptot | 350 | mW | Tamb ≤ 25 °C; FR4 PCB, standard footprint | 3 | ||
| Junction temperature | Tj | 150 | °C | 3 | |||
| Ambient temperature | Tamb | -55 | 150 | °C | 3 | ||
| Storage temperature | Tstg | -65 | 150 | °C | 3 | ||
| Thermal resistance junction to ambient | Rth(j-a) | 350 | K/W | in free air; FR4 PCB, standard footprint | 3 | ||
| Thermal resistance junction to ambient | Rth(j-a) | 210 | K/W | FR4 PCB, mounting pad for cathode 1 cm² | 3 | ||
| Thermal resistance junction to solder point | Rth(j-sp) | 55 | K/W | soldering point of cathode tab | 3 |
CAD (KiCad official)
- Symbol:
BZT52-B12J - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
bzt52-b12j-etched.step/bzt52-b12j-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bzt52-b12j.step/bzt52-b12j.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (11 pp, sha256
af4d7e0d2280a363, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).