# BZX84B10LT1G

**onsemi** · Zener Diodes · SOT-23

BZX84B10LT1G from onsemi, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model). Symbol and footprint from KiCad-official CAD; the 3D model is generated from the datasheet's package dimensions.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | ANODE | passive | Anode terminal of the Zener diode; the datasheet's STYLE 8 pin assignment for SOT-23 places the anode on pin 1. |
| 2 | NC | unconnected | No internal connection; the datasheet specifies pin 2 as NO CONNECTION for this package style. |
| 3 | CATHODE | passive | Cathode terminal of the Zener diode, marked by the polarity band on the package; the datasheet's STYLE 8 pin assignment places the cathode on pin 3. |

## 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 |
|---|---|---|---|---|---|---|---|
| Reverse Zener Voltage | VZ | 9.8 | 10 | 10.2 | V | @ IZT = 5 mA (Note 4) | 4 |
| Maximum Zener Impedance | ZZT |  |  | 20 | Ω | @ IZT = 5 mA (Note 4) | 4 |
| Reverse Leakage Current | IR |  |  | 0.2 | µA | @ VR = 7 V | 4 |
| Temperature Coefficient of VZ | VZ | 4.5 |  | 8 | mV/k | @ IZT = 5 mA | 4 |
| Max. Capacitance | C |  |  | 130 | pF | @ VR = 0, f = 1 MHz | 4 |
| Forward Voltage | VF |  |  | 0.9 | V | @ IF = 10 mA | 4 |
| Total Power Dissipation on FR-5 Board | PD |  |  | 250 | mW | FR-5 board (Note 1) @ TA = 25°C | 2 |
| Total Power Dissipation on Alumina Substrate | PD |  |  | 300 | mW | Alumina substrate (Note 2) @ TA = 25°C | 2 |
| Power Dissipation Derating above 25°C, FR-5 Board |  |  |  | 2 | mW/°C | FR-5 board, derated above 25°C | 2 |
| Power Dissipation Derating above 25°C, Alumina Substrate |  |  |  | 2.4 | mW/°C | Alumina substrate, derated above 25°C | 2 |
| Thermal Resistance, Junction-to-Ambient, FR-5 Board | RJA |  |  | 500 | °C/W | FR-5 board (Note 1) | 2 |
| Thermal Resistance, Junction-to-Ambient, Alumina Substrate | RJA |  |  | 417 | °C/W | Alumina substrate (Note 2) | 2 |
| Junction and Storage Temperature Range | TJ, Tstg | -65 |  | 150 | °C |  | 2 |

## CAD (land: KiCad; 3D: generated from the datasheet)

- Symbol: `BZX84B10LT1G`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23, generated on the KiCad land (body 1.3 x 2.9 mm, terminals on the pads, 1.0 mm tall, datasheet A, nominal). KiCad's stock model for this land is taller than the datasheet allows, so the model is generated from the datasheet drawing; the dimensions come from the datasheet drawing where it was read and are defaults otherwise (see provenance.model_3d_generated), not the manufacturer's CAD (STEP)
- 3D model files: `bzx84b10lt1g-etched.step` / `bzx84b10lt1g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzx84b10lt1g.step` / `bzx84b10lt1g.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [onsemi datasheet](https://www.onsemi.com/pdf/datasheet/bzx84b10lt1-d.pdf) (8 pp, sha256 `b0f156e963b31101`, retrieved 2026-11-13, tier: manufacturer)
- **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:** land: KiCad official libraries (CC-BY-SA 4.0); 3D: generated from the datasheet's package dimensions (provenance.model_3d_generated).

[Datasheet PDF](docs/bzx84b10lt1g-datasheet.pdf)