Nexperia USA Inc. MMBZ16VTAL-QR

Overview

MMBZ16VTAL-Q from Nexperia is a unidirectional double ESD protection diode in common-anode SOT23 configuration, designed for robust transient suppression on two signal lines. It delivers 13 V reverse standoff voltage, 14 A (8/20 µs) peak pulse current capability, 19.5–23 V clamping voltage at 1.7 A (10/1000 µs), and 0.1 nA typical reverse leakage - qualified to AEC-Q101 for automotive in-vehicle network protection.

For engineers reviewing the MMBZ16VTAL-Q datasheet, MMBZ16VTAL-Q pinout, MMBZ16VTAL-Q application, or MMBZ16VTAL-Q equivalent, key selection criteria include common-anode dual-line unidirectional ESD clamping performance, tight ±2% breakdown tolerance (15.68–16.32 V), low 76–95 pF capacitance, and validated 30 kV IEC 61000-4-2 ESD immunity.

Technical Context

This device implements a dual-cathode, single-common-anode topology enabling independent unidirectional protection of two signal paths referenced to ground. Its clamping behavior is defined by sharp Zener-like breakdown at 16 V (±2%), with low dynamic impedance ensuring rapid voltage limiting during ESD events.

It operates within −55 °C to +150 °C ambient range and supports both IEC 61000-4-2 (30 kV contact/air) and IEC 61643-321 (10/1000 µs surge) compliance. The 76–95 pF capacitance at 0 V bias enables use on high-speed lines without signal integrity degradation.

Key Specifications

Pinout & Package

SOT23 (TO-236AB) plastic surface-mount package: 3-terminal, 1.9 mm pitch, 2.9 × 1.3 × 1.0 mm body; optimized for automated placement and reflow soldering.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar unidirectional dual-line ESD protection applications.

Compared with SZMMBZ16VALT1G and SMAJ13A, MMBZ16VTAL-Q uniquely combines AEC-Q101 qualification, ±2% VBR tolerance, 0.1 nA leakage, and dual-line SOT23 integration - making it optimal for automotive signal line protection where space, precision, and reliability are co-constrained.

Availability

MMBZ16VTAL-Q is available at Aetrix Electronics and suitable for automotive in-vehicle networks, industrial sensor interfaces, and power management monitoring requiring stable component supply and long-term lifecycle support.

Supply support for MMBZ16VTAL-Q includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and advanced packaging.

This device belongs to Nexperia's Automotive ESD Protection Diodes product line, engineered specifically for robust, space-efficient transient suppression in harsh automotive environments - including infotainment, body electronics, and powertrain subsystems.

FAQ

What is the maximum clamping voltage under IEC 61643-321 10/1000 µs surge conditions?

The MMBZ16VTAL-Q exhibits a maximum clamping voltage of 23 V when subjected to a 1.7 A, 10/1000 µs surge pulse per IEC 61643-321. This value is measured from either cathode (pin 1 or 2) to the common anode (pin 3) at Tj = 25 °C and defines the upper bound of voltage imposed on protected circuitry during standardized surge events.

Can this device protect bidirectional signal lines like USB D+ and D−?

No - the MMBZ16VTAL-Q is strictly unidirectional and configured in common-anode topology, meaning it only clamps positive transients on pins 1 and 2 relative to pin 3 (ground). For bidirectional lines such as USB, a dedicated bidirectional ESD array (e.g., Nexperia PUSB3FR4) or dual unidirectional devices in back-to-back configuration would be required.

Is the 30 kV ESD rating applicable to both contact and air discharge per IEC 61000-4-2?

Yes - the datasheet explicitly states ±30 kV for both contact discharge and air discharge testing per IEC 61000-4-2 ed.2. This rating was verified using ten non-repetitive ESD pulses applied from pin 1 or 2 to pin 3, confirming robustness across standard test methodologies used in automotive EMC validation.

How does the common-anode configuration affect PCB layout compared to discrete diodes?

The common-anode structure reduces routing complexity by consolidating both cathodes to separate signal lines while sharing a single ground connection (pin 3). This eliminates the need for two independent ground vias and minimizes loop area - directly improving ESD suppression efficiency and easing compliance with layout guidelines that emphasize short, low-inductance transient return paths.