# SZBZX84C8V2ET3G

**onsemi** · Zener Diodes · SOT-23

SZBZX84C8V2ET3G from onsemi, in a SOT-23. 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 | ANODE | passive | Anode of the Zener diode; the cathode is identified by the polarity band on the package. |
| 2 | NO CONNECTION | unconnected | No connection on this pin (datasheet pinout: 2-No Connection). |
| 3 | CATHODE | passive | Cathode of the Zener diode, marked by the polarity band on the package. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOT-23 |
| Category | Diodes |
| Pins | 3 |

## 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 (VZ1 at IZT1) | VZ1 | 7.7 | 8.2 | 8.7 | V | @ IZT1 = 5 mA (Note 4) | 3 |
| Zener voltage (VZ2 at IZT2) | VZ2 | 7.6 |  | 8.7 | V | @ IZT2 = 1 mA (Note 4) | 3 |
| Zener voltage (VZ3 at IZT3) | VZ3 | 7.7 |  | 8.8 | V | @ IZT3 = 20 mA (Note 4) | 3 |
| Maximum Zener impedance (ZZT1) | ZZT1 |  |  | 15 | Ω | @ IZT1 = 5 mA | 3 |
| Maximum Zener impedance (ZZT2) | ZZT2 |  |  | 80 | Ω | @ IZT2 = 1 mA | 3 |
| Maximum Zener impedance (ZZT3) | ZZT3 |  |  | 6 | Ω | @ IZT3 = 20 mA | 3 |
| Maximum reverse leakage current | IR |  |  | 0.7 | µA | @ VR = 5.0 V | 3 |
| Maximum temperature coefficient of VZ | VZ | 3.2 |  | 6.2 | mV/K | @ IZT1 = 5 mA | 3 |
| Maximum capacitance | C |  |  | 135 | pF | @ VR = 0, f = 1 MHz | 3 |
| Forward voltage | VF |  |  | 0.9 | V | @ IF = 10 mA | 2 |
| Peak power dissipation | Ppk |  |  | 225 | W | @ 20 µs (Note 1), @ TL ≤ 25°C | 1 |
| Total power dissipation on FR-5 board | PD |  |  | 250 | mW | @ TA = 25°C (Note 2) | 1 |
| Total power dissipation on alumina substrate | PD |  |  | 300 | mW | @ TA = 25°C (Note 3) | 1 |
| Thermal resistance, junction-to-ambient, FR-5 board | RJA |  |  | 500 | °C/W | FR-5 board (Note 2) | 1 |
| Thermal resistance, junction-to-ambient, alumina substrate | RJA |  |  | 417 | °C/W | Alumina substrate (Note 3) | 1 |
| Junction and storage temperature range | TJ, Tstg | -65 |  | 150 | °C |  | 1 |

## CAD (KiCad official)

- Symbol: `SZBZX84C8V2ET3G`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `szbzx84c8v2et3g-etched.step` / `szbzx84c8v2et3g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `szbzx84c8v2et3g.step` / `szbzx84c8v2et3g.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [onsemi datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589996924943302656) (8 pp, sha256 `16b420bad7adbadb`, retrieved 2026-10-18, 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/szbzx84c8v2et3g-datasheet.pdf)