# MMBZ27VC

**Leiditech** · Electrostatic And Surge Protection (TVS/ESD) · SOT-23

MMBZ27VC from Leiditech, 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 TVS diode (pin 1); device has 22V reverse working voltage and 25.65V min breakdown at 1mA. |
| 2 | ANODE | passive | Second anode of the TVS diode (pin 2); device has 22V reverse working voltage and 25.65V min breakdown at 1mA. |
| 3 | CATHODE | passive | Common cathode of the TVS diode (pin 3); device has 22V reverse working voltage and 25.65V min breakdown at 1mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Leiditech |
| Package | SOT-23 |
| Category | TVS/Fuse/Board Level Protection |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown Voltage | VBR | 25.65 | 27 | 28.35 | V | IT = 1mA | 2 |
| Reverse Leakage Current | IR |  |  | 0.5 | µA | VRWM = 22V | 2 |
| Clamping Voltage | VC |  |  | 38 | V | IPP = 1A (10 x 1000 s pulse) | 2 |
| Junction Capacitance | CJ |  |  | 30 | pF | V = 0V, f = 1MHz | 2 |
| Reverse Working Voltage | VRWM |  | 22 |  | V |  | 2 |
| Peak Pulse Power | Ppp |  |  | 50 | W | 8/20µs, Tamb=25°C | 1 |
| ESD per IEC 61000-4-2 (Air) | VESD | -15 |  | 15 | kV | Tamb=25°C | 1 |
| ESD per IEC 61000-4-2 (Contact) | VESD | -8 |  | 8 | kV | Tamb=25°C | 1 |
| Operating Temperature Range | TJ | -55 |  | 150 | °C | Tamb=25°C | 1 |
| Storage Temperature Range | TSTJ | -55 |  | 150 | °C | Tamb=25°C | 1 |

## CAD (KiCad official)

- Symbol: `MMBZ27VC`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `mmbz27vc-etched.step` / `mmbz27vc-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mmbz27vc.step` / `mmbz27vc.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Leiditech datasheet](docs/mmbz27vc-datasheet.pdf) (3 pp, sha256 `fb5d14c43bccca7a`, retrieved 2026-10-23, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/mmbz27vc-datasheet.pdf)