component
MMBZ18VCL
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
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownMMBZ18VCL
Nexperia · ESD And Surge Protection (TVS/ESD) · TO-236AB
MMBZ18VCL 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 (unidirectional ESD/transient protection for line 1); ratings are measured from pin 1 to pin 3, with rated peak pulse current IPPM 1.6 A (10/1000 µs) and contact-discharge ESD up to 30 kV per IEC 61000-4-2. |
| 2 | A2 | passive | Anode of diode 2 (unidirectional ESD/transient protection for line 2); ratings are measured from pin 2 to pin 3, with rated peak pulse current IPPM 1.6 A (10/1000 µs) and contact-discharge ESD up to 30 kV per IEC 61000-4-2. |
| 3 | CC | passive | Common cathode shared by both diodes and the reference terminal for the pin 1 and pin 2 ratings; it is also the soldering point for the junction-to-solder-point thermal resistance Rth(j-sp) of 60 K/W. |
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 |
|---|---|---|---|---|---|---|---|
| rated peak pulse power | PPPM | 40 | W | 2 | |||
| rated peak pulse current | IPPM | 1.6 | A | tp = 10/1000 µs | 2 | ||
| total power dissipation | Ptot | 350 | mW | Tamb ≤ 25 °C; device on FR4 PCB, single-sided copper, standard footprint | 2 | ||
| total power dissipation | Ptot | 440 | mW | mounting pad for cathode 1 cm2 (footnote [4]); Tamb ≤ 25 °C shared cell | 2 | ||
| junction temperature | Tj | 150 | °C | 2 | |||
| ambient temperature | Tamb | -55 | 150 | °C | 2 | ||
| storage temperature | Tstg | -65 | 150 | °C | 2 | ||
| electrostatic discharge voltage | VESD | 30 | kV | IEC 61000-4-2; contact discharge; Tamb = 25 °C | 3 | ||
| electrostatic discharge voltage | VESD | 15 | kV | IEC 61000-4-2; air discharge | 3 | ||
| electrostatic discharge voltage | VESD | 8 | kV | MIL-STD-883; human body model (HBM) | 3 | ||
| thermal resistance from junction to ambient | Rth(j-a) | 350 | K/W | Device mounted on FR4 PCB, single-sided copper, tin-plated and standard footprint | 4 | ||
| thermal resistance from junction to ambient | Rth(j-a) | 280 | K/W | Device mounted on FR4 PCB, single-sided copper, tin-plated, mounting pad for cathode 1 cm2 | 4 | ||
| thermal resistance from junction to solder point | Rth(j-sp) | 60 | K/W | Soldering point at pin 3 | 4 | ||
| forward voltage | VF | 0.9 | V | IF = 10 mA; Tamb = 25 °C | 4 | ||
| reverse standoff voltage | VRWM | 14.5 | V | Tamb = 25 °C | 4 | ||
| breakdown voltage | VBR | 17.1 | 18 | 18.9 | V | IR = 1 mA; Tamb = 25 °C | 4 |
| reverse leakage current | IRM | 0.1 | 5 | nA | VRWM = 14.5 V; Tamb = 25 °C | 4 | |
| diode capacitance | Cd | 70 | 90 | pF | f = 1 MHz; VR = 0 V; Tamb = 25 °C | 4 | |
| clamping voltage | VCL | 25 | V | IPPM = 1.6 A; tp = 10/1000 µs; Tamb = 25 °C | 4 |
CAD (KiCad official)
- Symbol:
MMBZ18VCL - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: TO-236AB (KiCad packages3D, STEP)
- 3D model files:
mmbz18vcl-etched.step/mmbz18vcl-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmbz18vcl.step/mmbz18vcl.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (11 pp, sha256
a59b08907adcd80c, retrieved 2026-10-16, tier: manufacturer) - 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).