component
MMBZ20VCL-QR
Public Made by Adomby adom
Nexperia ESD And Surge Protection (TVS/ESD), TO-236AB. 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
markdownMMBZ20VCL-QR
Nexperia · ESD And Surge Protection (TVS/ESD) · TO-236AB
MMBZ20VCL-QR from Nexperia, in a TO-236AB. 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 | A1 | passive | Anode of diode 1; measured from pin 1 to pin 3, the device is rated for IPPM 1.4 A (10/1000 µs) and ESD contact discharge up to 30 kV (IEC 61000-4-2). |
| 2 | A2 | passive | Anode of diode 2; measured from pin 2 to pin 3, the device is rated for IPPM 1.4 A (10/1000 µs) and ESD contact discharge up to 30 kV (IEC 61000-4-2). |
| 3 | CC | passive | Common cathode shared by both diodes; the soldering point for thermal resistance Rth(j-sp) is specified at this pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | TO-236AB |
| 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 |
|---|---|---|---|---|---|---|---|
| VF forward voltage | VF | 0.9 | V | IF = 10 mA; Tamb = 25 °C | 5 | ||
| VRWM reverse standoff voltage | VRWM | 17 | V | Tamb = 25 °C | 5 | ||
| VBR breakdown voltage | VBR | 19 | 20 | 21 | V | IR = 1 mA; Tamb = 25 °C | 5 |
| IRM reverse leakage current | IRM | 0.1 | 5 | nA | VRWM = 17 V; Tamb = 25 °C | 5 | |
| Cd diode capacitance | Cd | 65 | 80 | pF | f = 1 MHz; VR = 0 V; Tamb = 25 °C | 5 | |
| VCL clamping voltage | VCL | 28 | V | IPPM = 1.4 A; tp = 10/1000 µs; Tamb = 25 °C; measured from pin 1 or 2 to pin 3 (note [1][2]) | 5 | ||
| rated peak pulse power | PPPM | 40 | W | 3 | |||
| rated peak pulse current | IPPM | 1.4 | A | tp = 10/1000 µs | 3 | ||
| total power dissipation | Ptot | 350 | mW | Tamb ≤ 25 °C; device on FR4 PCB, single-sided copper, standard footprint (note [3]) | 3 | ||
| total power dissipation | Ptot | 440 | mW | Tamb ≤ 25 °C; device on FR4 PCB, mounting pad for cathode 1 cm² (note [4]) | 3 | ||
| junction temperature | Tj | 150 | °C | 3 | |||
| ambient temperature | Tamb | -55 | 150 | °C | 3 | ||
| storage temperature | Tstg | -65 | 150 | °C | 3 | ||
| ESD voltage, IEC 61000-4-2 contact discharge | VESD | 30 | kV | IEC 61000-4-2; contact discharge; Tamb = 25 °C (notes [5][2]) | 3 | ||
| ESD voltage, IEC 61000-4-2 air discharge | VESD | 15 | kV | IEC 61000-4-2; air discharge | 3 | ||
| ESD voltage, machine model | VESD | 2 | kV | machine model; Tamb = 25 °C (notes [5][2]) | 3 | ||
| ESD voltage, human body model | VESD | 8 | kV | MIL-STD-883; human body model (HBM) | 3 | ||
| thermal resistance junction to ambient | Rth(j-a) | 350 | K/W | in free air; device on FR4 PCB, single-sided copper, standard footprint (note [1]) | 4 | ||
| thermal resistance junction to ambient | Rth(j-a) | 280 | K/W | in free air; device on FR4 PCB, mounting pad for cathode 1 cm² (note [2]) | 4 | ||
| thermal resistance junction to solder point | Rth(j-sp) | 60 | K/W | soldering point at pin 3 (note [3]) | 4 |
CAD (KiCad official)
- Symbol:
MMBZ20VCL-QR - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: TO-236AB (KiCad packages3D, STEP)
- 3D model files:
mmbz20vcl-qr-etched.step/mmbz20vcl-qr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmbz20vcl-qr.step/mmbz20vcl-qr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (11 pp, sha256
0d2bfefedc70a8df, retrieved 2026-10-16, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).