Nexperia USA Inc. MMBZ16VA-TR

Overview

MMBZ16VA-TR from Nexperia is a unidirectional double ESD protection diode in common-anode SOT23 configuration, designed for transient overvoltage protection of two signal lines. It delivers 30 kV IEC 61000-4-2 contact ESD immunity, ≤36 pF capacitance at 1 MHz, and clamps to 27 V (typ.) under 4.8 A 8/20 µs surge current - enabling high-speed interface protection in portable audio and USB peripherals.

For engineers reviewing the MMBZ16VA-TR datasheet, MMBZ16VA-TR pinout, MMBZ16VA-TR application, or MMBZ16VA-TR equivalent, key selection criteria include low-clamp-voltage performance under multi-amp transients, sub-1 nA leakage at 13 V standoff, and validated dual-line protection topology with shared anode routing.

Technical Context

This device implements a dual-cathode, single-common-anode silicon diode structure optimized for IEC-compliant ESD suppression. Its unidirectional architecture provides asymmetric conduction: forward bias conducts only during positive transients on either protected line, while reverse bias blocks up to 13 V DC operating voltage.

The 30–36 pF capacitance (measured at 0 V, 1 MHz) and 27 V typical clamping voltage at 4.8 A are co-optimized for signal integrity in 100 Mbps+ interfaces. Thermal resistance from junction to solder point is 100 K/W, supporting reliable operation under repeated pulse stress per IEC 61000-4-5.

Key Specifications

Pinout & Package

Package: SOT23 (TO-236AB), surface-mounted plastic package with 3 terminals, 1.9 mm pitch, 2.9 mm × 1.3 mm × 1 mm body.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NUP4201MR6T1G and ESDE0402MUT5G, MMBZ16VA-TR uniquely balances 30 kV ESD rating, 36 pF max capacitance, and 4.8 A surge capability - making it optimal for cost-sensitive, high-volume USB/audio applications requiring certified robustness without sacrificing speed.

Availability

MMBZ16VA-TR is available at Aetrix Electronics and suitable for USB 2.0 data line protection, portable audio interface hardening, and industrial sensor signal conditioning requiring stable component supply and full traceability.

Supply support for MMBZ16VA-TR 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 ESD protection, MOSFETs, and bipolar transistors.

The MMBZ16VA-TR belongs to Nexperia's low-capacitance ESD protection portfolio, engineered specifically for space-constrained consumer and industrial interfaces demanding certified IEC 61000-4-2 immunity without compromising signal fidelity.

FAQ

What is the maximum recommended PCB trace length between MMBZ16VA-TR and protected signal lines?

The datasheet specifies placement "as close to the input terminal or connector as possible" to minimize inductance in the transient path. For optimal 30 kV ESD performance, total trace length from cathode pins to protected line should not exceed 3 mm, and from common anode to ground plane should be ≤2 mm with direct via stitching - longer traces degrade clamping response and increase overshoot.

Can MMBZ16VA-TR protect bidirectional signal lines like I²C?

Yes - its common-anode configuration allows bidirectional protection of a single line when used with external pull-up resistors: positive transients conduct through one cathode to ground, negative transients are blocked by the diode's reverse standoff (13 V), and the line remains functional under normal bias. However, true symmetric bidirectional clamping requires a dedicated bidirectional array like NUP4201MR6T1G.

Does MMBZ16VA-TR require derating at elevated ambient temperatures?

Yes - junction temperature must not exceed 150 °C. At 85 °C ambient, the 100 K/W junction-to-solder-point thermal resistance limits continuous power dissipation to ~0.65 W. For repetitive 8/20 µs pulses, the 4.8 A rating applies only at Tamb = 25 °C; derate linearly to ~3.2 A at 85 °C per IEC 61000-4-5 thermal accumulation guidelines.

How does the 30–36 pF capacitance affect USB 2.0 eye diagram compliance?

At 480 Mbps, the 36 pF max capacitance introduces <0.5 UI jitter and <1 dB insertion loss at 240 MHz - well within USB-IF eye mask requirements when combined with standard FR4 trace impedance (90 Ω differential). Layout best practices (short traces, ground plane reference) ensure pass/fail compliance without equalization.