Nexperia USA Inc. BZB84-B62-QR

Overview

BZB84-B62-QR from Nexperia is a dual Zener diode in SOT23 package with common anode configuration, rated for 62 V nominal working voltage (±2 % tolerance), 300 mW total power dissipation, and AEC-Q101 qualification for automotive voltage regulation. It delivers stable reference voltage in dual-rail or redundancy-critical circuits such as engine control unit (ECU) power rail clamping and sensor biasing.

For engineers reviewing the BZB84-B62-QR datasheet, BZB84-B62-QR pinout, BZB84-B62-QR application, or BZB84-B62-QR equivalent, key selection criteria include its dual-common-anode topology, ±2 % Zener voltage tolerance at 5 mA, non-repetitive peak reverse current of 0.3 A, and thermal resistance of 100 K/W to solder point - all critical for compact automotive PCB designs requiring dual-voltage clamping with high surge immunity.

Technical Context

This dual Zener diode integrates two independent 62 V Zener elements sharing a common anode terminal (Pin 3), enabling simultaneous regulation or bidirectional clamping across two signal paths. Its differential resistance is 450 Ω at I_Z = 5 mA, and temperature coefficient is +0.4 mV/K, ensuring predictable drift over automotive temperature range (−55 °C to +150 °C).

Designed for surface-mount assembly on FR4 PCBs, it supports reflow and wave soldering per JEDEC standards, with junction-to-solder-point thermal resistance of 100 K/W and maximum non-repetitive peak reverse power dissipation of 40 W at t_p = 100 µs - validated under AEC-Q101 stress testing including HTRB, HTGB, and ESD.

Key Specifications

Pinout & Package

SOT23 plastic surface-mount package: 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch, three terminals. Qualified per AEC-Q101 for automotive reliability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual Zener diode applications.

Compared with BZB84-B62-QR, NZX62B and BZX84-C62 lack integrated dual-channel capability, AEC-Q101 validation, and ±2 % tolerance - making them unsuitable for space-constrained, safety-critical automotive voltage regulation where footprint efficiency and parametric consistency are mandatory.

Availability

BZB84-B62-QR is available at Aetrix Electronics and suitable for automotive ECU design, sensor module production, and CAN transceiver protection requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for BZB84-B62-QR 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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.

BZB84-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for dual-voltage regulation and transient suppression in harsh automotive environments - emphasizing compactness, precision, and robustness.

FAQ

What is the maximum continuous reverse current for BZB84-B62-QR at 25 °C?

The device supports a maximum continuous forward current of 200 mA per diode, but Zener operation occurs in reverse bias. At V_R = 62 V, the typical reverse current is <0.1 μA below knee voltage; actual steady-state Zener current depends on external series resistance and applied voltage - design must ensure I_Z stays within 5 mA (for ±2 % spec) to 200 mA (absolute max) limits.

Can BZB84-B62-QR be used in parallel for higher power handling?

No - parallel connection of Zener diodes is not recommended due to mismatched breakdown voltages causing current hogging. The device's 40 W non-repetitive peak rating is defined per diode; for higher surge energy, use external TVS or RC snubbers rather than paralleling units.

Is the common anode pin (Pin 3) internally bonded to both die substrates?

Yes - Pin 3 is the monolithic common anode connection tying both Zener junctions to a single metallized substrate. This ensures matched thermal behavior and identical voltage reference points, critical for dual-channel accuracy and AEC-Q101 qualification.

Does the ±2 % tolerance apply at all operating currents?

The ±2 % tolerance is specified at I_Z = 5 mA per diode. At lower currents (e.g., 1 mA), differential resistance increases and voltage deviation may exceed ±2 %; for precision applications, maintain I_Z ≥ 5 mA and verify performance across temperature using the published +0.4 mV/K coefficient.