component
MMBZ12VA
Public Made by Adomby adom
Slkor(SLKORMICRO Elec.) ESD And Surge Protection (TVS/ESD), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownMMBZ12VA
Slkor(SLKORMICRO Elec.) · ESD And Surge Protection (TVS/ESD) · SOT-23
MMBZ12VA from Slkor(SLKORMICRO Elec.), 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 | K1 | passive | Zener TVS cathode 1, used unidirectionally with pin 3 (VRWM 8.5 V, VBR 11.40 to 12.60 V at 1.0 mA, VC 17 V at IPP 2.35 A for MMBZ12VA), or tied to pin 2 for bidirectional use. |
| 2 | K2 | passive | Zener TVS cathode 2, used unidirectionally with pin 3 (VRWM 8.5 V, VBR 11.40 to 12.60 V at 1.0 mA, VC 17 V at IPP 2.35 A for MMBZ12VA), or tied to pin 1 for bidirectional use. |
| 3 | A | passive | Common anode of the two Zener TVS diodes, shared by the circuits tied to pins 1 and 3 or pins 2 and 3, with forward voltage VF 0.9 V max at IF 10 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Slkor(SLKORMICRO Elec.) |
| Package | SOT-23 |
| Category | Circuit 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 | 11.4 | 12 | 12.6 | V | @ IT = 1.0 mA | 2 |
| Maximum Reverse Leakage Current | IR | 200 | nA | @ VRWM | 2 | ||
| Maximum Reverse Peak Pulse Current | IPP | 2.35 | A | 2 | |||
| Maximum Temperature Coefficient of VBR | VBR | 7.5 | mV/°C | 2 | |||
| Forward Voltage | VF | 0.9 | V | @ IF = 10 mA | 2 | ||
| Clamping Voltage | VC | 17 | V | @ IPP | 2 | ||
| Working Peak Reverse Voltage | VRWM | 8.5 | V | 2 | |||
| Peak Power Dissipation | PPK | 40 | W | 1.0 ms pulse, TA = 25°C; MMBZ12VA-MMBZ33VA column | 1 | ||
| Total Power Dissipation on FR-5 Board | PD | 225 | mW | FR-5 board, TA = 25°C | 1 | ||
| Derate above 25°C (FR-5 Board) | PD | 1.8 | mW/°C | FR-5 board, above TA = 25°C | 1 | ||
| Total Power Dissipation on Alumina Substrate | PD | 300 | mW | Alumina substrate, TA = 25°C | 1 | ||
| Derate above 25°C (Alumina Substrate) | PD | 2.4 | mW/°C | Alumina substrate, above TA = 25°C | 1 | ||
| Thermal Resistance Junction-to-Ambient (FR-5 Board) | RθJA | 556 | °C/W | FR-5 board | 1 | ||
| Thermal Resistance Junction-to-Ambient (Alumina Substrate) | RθJA | 417 | °C/W | Alumina substrate | 1 | ||
| Junction and Storage Temperature Range | TJ, TSTG | -55 | 150 | °C | 1 | ||
| Lead Solder Temperature (Maximum) | TL | 260 | °C | 10 second duration | 1 |
CAD (KiCad official)
- Symbol:
MMBZ12VA - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
mmbz12va-etched.step/mmbz12va-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmbz12va.step/mmbz12va.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Slkor(SLKORMICRO Elec.) datasheet (5 pp, sha256
58984ec1f3d02363, retrieved 2026-11-04, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).