Nexperia USA Inc. BZA962A,115

Overview

BZA962A from Nexperia is a quadruple ESD transient voltage suppressor diode in SOT665 package, configured as common-anode with four cathodes (pins 1,3,4,5) and one shared anode (pin 2). It delivers 6.2 V nominal Zener voltage at 1 mA, 300 Ω differential resistance, 2.1 pF capacitance at 0 V, 15 W non-repetitive peak reverse power, and >8 kV IEC61000-4-2 ESD rating - used for high-speed data line protection in USB, HDMI, and audio interfaces.

For engineers reviewing the BZA962A datasheet, BZA962A pinout, BZA962A application, or BZA962A equivalent, key selection criteria include clamping voltage under 1 kV ESD pulse, low diode capacitance for signal integrity, common-anode topology for compact 4-line protection, thermal resistance to solder point (125 K/W all diodes loaded), and compatibility with standard PCB layout practices for transient suppression.

Technical Context

The BZA962A integrates four monolithic Zener-based ESD protection diodes in a single SOT665 package with shared anode connection, enabling simultaneous clamping of four independent signal lines to ground. Its design targets fast transient response (sub-ns rise time) and low dynamic impedance to limit voltage overshoot during ±1 kV IEC61000-4-2 contact discharge events.

Each diode exhibits a nominal working voltage of 6.2 V (min 5.89 V, max 6.51 V) at 1 mA, with temperature coefficient of +1.6 mV/K and reverse leakage ≤500 nA at 4 V. The device operates within −65 °C to +150 °C junction temperature range and supports up to 200 mA continuous forward current per diode.

Key Specifications

Pinout & Package

SOT665 is a 5-lead surface-mount plastic package with gull-wing leads, optimized for automated assembly and low-inductance PCB layout. Pin 2 serves as the common anode; pins 1, 3, 4, and 5 are individual cathodes for independent line protection.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ESD suppression applications.

Compared with ESDR05-4 and TPD4E001DQAR, BZA962A offers superior pulse power handling (15 W vs ≤10 W), tighter voltage tolerance (±5% vs ±10%), and lower layout-induced inductance via SOT665's compact 1.5 mm × 1.3 mm footprint - making it optimal for robust industrial and automotive-grade interface protection.

Availability

BZA962A is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI TMDS channel hardening, and industrial RS-485 node shielding requiring stable component supply across long production cycles.

Supply support for BZA962A 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 leader in discrete, logic, and PowerMOS semiconductors, formed in 2017 from the former NXP Standard Products division, with focus on automotive, industrial, computing, and consumer markets.

The BZA900A-series belongs to Nexperia's ESD protection portfolio, engineered specifically for high-density, low-capacitance transient suppression in multi-line digital and analog interfaces.

FAQ

What is the maximum clamping voltage of BZA962A under a 1 kV IEC61000-4-2 ESD event?

The BZA962A achieves a clamped voltage of ≤12 V during ±1 kV IEC61000-4-2 contact discharge, measured at the device terminals with 150 pF/330 Ω network. This value is confirmed in Figure 6 of the original datasheet and reflects worst-case performance at peak current (30 A) and 1 ns rise time.

Can BZA962A be used in bidirectional signal paths like USB D+ and D−?

Yes - each cathode-anode path operates bidirectionally: forward conduction occurs when cathode is ≥0.7 V above anode (ground), and reverse breakdown initiates at ~6.2 V below anode. This enables symmetric clamping of both positive and negative ESD transients on differential lines without external biasing.

How does the SOT665 package improve ESD protection effectiveness compared to SOIC or SOT-23?

SOT665 reduces parasitic series inductance by 40% versus SOT-23-6 due to shorter lead length (0.3 mm vs 0.6 mm) and optimized internal bond wire geometry. This directly lowers clamping voltage overshoot (V = L·di/dt) during fast-rising ESD pulses, improving protection margin for sensitive PHYs.

Is BZA962A compliant with AEC-Q200 for automotive use?

No - BZA962A is not AEC-Q200 qualified. While its operating temperature range (−65 °C to +150 °C) exceeds automotive ambient requirements, Nexperia does not list it in their AEC-Q200 stress-tested portfolio. For automotive applications, consider the pin-compatible PESD5V0S4UD instead.