# BZX84B11

**LGE** · Zener Diodes · SOT-23

BZX84B11 from LGE, 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 | A | passive | Pin 1 is the cathode end of the Zener diode (symbol shows 1 connected through the diode to 3); the datasheet gives VZ 10.8-11.2 V (11 V nominal) at IZT1 = 5 mA for BZX84B11. |
| 2 | NC | unconnected | Pin 2 is shown as an unconnected open terminal in the package schematic, with no function stated. |
| 3 | K | passive | Pin 3 is the second diode terminal, joined to pin 1 through the Zener in the schematic; the rating is 300 mW power dissipation and Tj 150 °C. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | LGE |
| 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 | VZ | 10.8 | 11 | 11.2 | V | IZT1 = 5 mA | 1 |
| Reverse leakage current | IR |  |  | 0.1 | μA | VR = 8 V | 1 |
| Dynamic resistance | ZZ |  |  | 20 | Ω | IZT1 = 5 mA, f = 1 kHz | 1 |
| Dynamic resistance (knee) | ZZK |  |  | 150 | Ω | IZT2 = 1 mA, f = 1 kHz | 1 |
| Power dissipation | Pd |  |  | 300 | mW | Valid provided device terminals are kept at ambient temperature (Note 1) | 1 |
| Forward voltage | Vf |  |  | 0.9 | V | IF = 10 mA, pulse period 5 ms, pulse width 300 μs (Note 2) | 1 |
| Junction temperature | Tj |  |  | 150 | °C |  | 1 |
| Storage temperature range | Ts | -65 |  | 150 | ℃ |  | 1 |
| Thermal resistance junction to ambient | RthJA |  |  | 417 | K/W | Junction to ambient | 1 |

## CAD (KiCad official)

- Symbol: `BZX84B11`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `bzx84b11-etched.step` / `bzx84b11-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzx84b11.step` / `bzx84b11.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [LGE datasheet](docs/bzx84b11-datasheet.pdf) (4 pp, sha256 `ada4fe229d103623`, retrieved 2026-11-04, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-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).

[Datasheet PDF](docs/bzx84b11-datasheet.pdf)