NXP Semiconductors BZA868AVL,115

Overview

BZA868AVL,115 from Nexperia is a quadruple low-capacitance ESD suppressor diode array in SOT353 (SC-88A) package, configured with common anode and designed for 4-line I/O protection. It features 6.8 V working voltage (IZ = 1 mA), ≤19 pF diode capacitance at 0 V, ≤11 pF at 5 V, 20 nA reverse leakage at 4.3 V, and 100 Ω differential resistance - enabling high-speed data line protection in USB, HDMI, and audio interfaces.

For engineers reviewing the BZA868AVL,115 datasheet, BZA868AVL,115 pinout, BZA868AVL,115 application, or BZA868AVL,115 equivalent, key selection criteria include ESD clamping performance under IEC 61000-4-2 (≥15 kV contact), low capacitance for signal integrity, common-anode topology for compact routing, and thermal resistance (Rth j-a = 410 K/W) in space-constrained PCB layouts.

Technical Context

The BZA868AVL,115 integrates four monolithic silicon avalanche diodes in a single SOT353 package with shared anode (Pin 2), enabling simultaneous suppression of transients on four independent signal lines. Its low 16–19 pF capacitance at 0 V and reduced 8–11 pF at 5 V ensures minimal signal distortion in high-frequency interfaces up to 500 MHz.

It complies with IEC 61000-4-2 Level 4 (≥15 kV air, ≥8 kV contact) and MIL-STD-883 HBM Class 3 (≥4 kV), delivering clamped voltages below 12 V at 1 A peak transient current. Thermal design relies on low Rth j-s (185 K/W, all diodes loaded) and requires short PCB traces to minimize parasitic inductance-induced voltage overshoot.

Key Specifications

Pinout & Package

SOT353 (SC-88A) 5-lead plastic surface-mount package: 1.35 mm × 1.75 mm footprint, 0.95 mm height, gull-wing leads, JEDEC standard outline.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ESDR05-4 and TPD4E001DBVR, the BZA868AVL,115 offers optimal balance of 6.8 V clamping threshold, 16–19 pF capacitance, and common-anode SOT353 layout efficiency - making it ideal for 5 V USB 2.0, HDMI, and industrial RS-485 protection where board space and signal fidelity are constrained.

Availability

BZA868AVL,115 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI signal line protection, and industrial I/O module protection requiring stable component supply across production lifecycles.

Supply support for BZA868AVL,115 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 high-performance discrete, logic, and PowerMOS semiconductors, serving automotive, industrial, computing, and consumer markets with scalable, reliable components.

The BZA800AVL series was engineered specifically for compact, multi-line ESD protection in space-constrained digital interfaces - emphasizing low capacitance, precise clamping, and robust IEC 61000-4-2 compliance without sacrificing manufacturability.

FAQ

What is the working voltage of the BZA868AVL,115 and how is it defined?

The BZA868AVL,115 has a working voltage (V_Z) of 6.8 V, specified at test current I_Z = 1 mA. This value represents the nominal DC voltage at which the diode begins to conduct significantly in reverse bias, defining the threshold above which ESD clamping activates. The datasheet guarantees a range of 6.46 V to 7.14 V under these conditions, ensuring compatibility with 5 V logic rails while maintaining margin against false triggering.

Does the BZA868AVL,115 support IEC 61000-4-2 Level 4 ESD protection?

Yes, the BZA868AVL,115 is rated for ≥15 kV contact discharge per IEC 61000-4-2, exceeding Level 4 requirements (8 kV contact / 15 kV air). This specification is verified through standardized testing with the 150 pF/330 Ω network, and the device maintains clamped voltages below 12 V at 1 A transient current - confirming its suitability for end-equipment certification in consumer and industrial applications.

What is the diode capacitance of the BZA868AVL,115 at operating bias?

The BZA868AVL,115 exhibits 16–19 pF capacitance at 0 V reverse bias and 8–11 pF at 5 V reverse bias, measured at 1 MHz. These values are critical for high-speed interfaces: the lower capacitance at operational bias minimizes loading on 480 Mbps USB 2.0 or 74.25 MHz HDMI TMDS lines, preserving signal edge rates and reducing jitter-induced bit errors in the BZA868AVL,115's target applications.

How is the common anode configuration implemented in the BZA868AVL,115 package?

The BZA868AVL,115 uses Pin 2 as the common anode terminal, with Pins 1, 3, 4, and 5 serving as individual cathodes for four independent ESD protection paths. This configuration allows all four diodes to share a single low-inductance ground connection, reducing PCB routing complexity and eliminating mismatched ground paths that could degrade clamping symmetry - a key advantage over discrete or dual-diode alternatives in the BZA868AVL,115 implementation.

What thermal limitations apply to continuous operation of the BZA868AVL,115?

The BZA868AVL,115 has a total power dissipation limit of 300 mW at 25 °C ambient, with thermal resistance from junction to ambient (R_{th j-a}) of 410 K/W. Derating is required above 25 °C per the published curve (Fig.5), reaching ~150 mW at 70 °C. Continuous forward current is limited to 200 mA per diode, and non-repetitive peak reverse power is capped at 6 W for 1 ms pulses - parameters that define safe operating area during both steady-state and transient conditions for the BZA868AVL,115.