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BZT52H-C51
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Nexperia Zener Diodes, SOD-123F. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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BZT52H-C51
Nexperia · Zener Diodes · SOD-123F
BZT52H-C51 from Nexperia, in a SOD-123F. 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 of the Zener diode; the marking bar on the package indicates the cathode. |
| 2 | A | passive | Anode of the Zener diode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOD-123F |
| 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 (grade C, tolerance series approx. ±5%) | VZ | 48 | 54 | V | IZ = 2 mA; Sel C | 7 | |
| Temperature coefficient | SZ | 46.6 | 57.2 | mV/K | IZ = 2 mA | 7 | |
| Maximum differential resistance | rdif | 350 | Ω | IZ = 1 mA | 7 | ||
| Maximum differential resistance | rdif | 100 | Ω | IZ = 5 mA | 7 | ||
| Reverse current | IR | 0.05 | μA | VR = 35.7 V | 7 | ||
| Diode capacitance | Cd | 40 | pF | f = 1 MHz; VR = 0 V | 7 | ||
| Non-repetitive peak reverse current | IZSM | 0.4 | A | tp = 100 μs; Tamb = 25 °C | 7 | ||
| Total power dissipation | Ptot | 375 | mW | Tamb ≤ 25 °C; FR4 PCB, standard footprint | 4 | ||
| Total power dissipation | Ptot | 830 | mW | Tamb ≤ 25 °C; FR4 PCB, mounting pad for cathode 1 cm2 | 4 | ||
| Non-repetitive peak reverse power dissipation | PZSM | 40 | W | tp = 100 μs; square wave; Tj = 25 °C prior to surge | 4 | ||
| Forward current | IF | 250 | mA | 4 | |||
| Junction temperature | Tj | 150 | °C | 4 | |||
| Ambient temperature | Tamb | -65 | 150 | °C | 4 | ||
| Storage temperature | Tstg | -65 | 150 | °C | 4 | ||
| Thermal resistance from junction to ambient | Rth(j-a) | 330 | K/W | in free air; FR4 PCB, standard footprint | 4 | ||
| Thermal resistance from junction to ambient | Rth(j-a) | 150 | K/W | in free air; FR4 PCB, mounting pad for cathode 1 cm2 | 4 | ||
| Thermal resistance from junction to solder point | Rth(j-sp) | 70 | K/W | soldering point of cathode tab | 4 | ||
| Forward voltage | VF | 0.9 | V | IF = 10 mA; tp ≤ 300 μs; δ ≤ 0.02 | 4 |
CAD (KiCad official)
- Symbol:
BZT52H-C51 - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123F (KiCad packages3D, STEP)
- 3D model files:
bzt52h-c51-etched.step/bzt52h-c51-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bzt52h-c51.step/bzt52h-c51.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (14 pp, sha256
a5e54de45bdf1af7, retrieved 2026-10-14, 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).
# BZT52H-C51
**Nexperia** · Zener Diodes · SOD-123F
BZT52H-C51 from Nexperia, in a SOD-123F. 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 of the Zener diode; the marking bar on the package indicates the cathode. |
| 2 | A | passive | Anode of the Zener diode. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOD-123F |
| 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 (grade C, tolerance series approx. ±5%) | VZ | 48 | | 54 | V | IZ = 2 mA; Sel C | 7 |
| Temperature coefficient | SZ | 46.6 | | 57.2 | mV/K | IZ = 2 mA | 7 |
| Maximum differential resistance | rdif | | | 350 | Ω | IZ = 1 mA | 7 |
| Maximum differential resistance | rdif | | | 100 | Ω | IZ = 5 mA | 7 |
| Reverse current | IR | | | 0.05 | μA | VR = 35.7 V | 7 |
| Diode capacitance | Cd | | | 40 | pF | f = 1 MHz; VR = 0 V | 7 |
| Non-repetitive peak reverse current | IZSM | | | 0.4 | A | tp = 100 μs; Tamb = 25 °C | 7 |
| Total power dissipation | Ptot | | | 375 | mW | Tamb ≤ 25 °C; FR4 PCB, standard footprint | 4 |
| Total power dissipation | Ptot | | | 830 | mW | Tamb ≤ 25 °C; FR4 PCB, mounting pad for cathode 1 cm2 | 4 |
| Non-repetitive peak reverse power dissipation | PZSM | | | 40 | W | tp = 100 μs; square wave; Tj = 25 °C prior to surge | 4 |
| Forward current | IF | | | 250 | mA | | 4 |
| Junction temperature | Tj | | | 150 | °C | | 4 |
| Ambient temperature | Tamb | -65 | | 150 | °C | | 4 |
| Storage temperature | Tstg | -65 | | 150 | °C | | 4 |
| Thermal resistance from junction to ambient | Rth(j-a) | | | 330 | K/W | in free air; FR4 PCB, standard footprint | 4 |
| Thermal resistance from junction to ambient | Rth(j-a) | | | 150 | K/W | in free air; FR4 PCB, mounting pad for cathode 1 cm2 | 4 |
| Thermal resistance from junction to solder point | Rth(j-sp) | | | 70 | K/W | soldering point of cathode tab | 4 |
| Forward voltage | VF | | | 0.9 | V | IF = 10 mA; tp ≤ 300 μs; δ ≤ 0.02 | 4 |
## CAD (KiCad official)
- Symbol: `BZT52H-C51`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123F (KiCad packages3D, STEP)
- 3D model files: `bzt52h-c51-etched.step` / `bzt52h-c51-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzt52h-c51.step` / `bzt52h-c51.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Nexperia datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588915812534640640) (14 pp, sha256 `a5e54de45bdf1af7`, retrieved 2026-10-14, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-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/bzt52h-c51-datasheet.pdf)