Nexperia USA Inc. BZB84-C10-QR

Overview

BZB84-C10-QR from Nexperia is a dual common-anode Zener diode in SOT23 package, rated for 10 V nominal Zener voltage (±5 % tolerance), 300 mW total power dissipation, and qualified to AEC-Q101 for automotive voltage regulation. It provides stable reference and overvoltage protection in compact space-constrained designs such as engine control units and body electronics.

For engineers reviewing the BZB84-C10-QR datasheet, BZB84-C10-QR pinout, BZB84-C10-QR application, or BZB84-C10-QR equivalent, key selection criteria include its dual-Zener topology with shared anode, ±5 % V_Z tolerance at I_Z = 5 mA, non-repetitive peak reverse power of 40 W, and automotive-grade reliability under −55 °C to +150 °C ambient conditions.

Technical Context

This dual-Zener device integrates two independent Zener junctions sharing a common anode terminal (Pin 3), enabling bidirectional clamping or dual-rail reference generation from a single SMT footprint. Each cathode (Pins 1 and 2) operates independently with specified V_Z = 9.4–10.6 V at 5 mA test current.

It delivers temperature-stable regulation with a typical temperature coefficient of +4.5 mV/K at I_Z = 5 mA and exhibits low differential resistance (150 Ω max) and minimal reverse leakage (<0.2 μA at 7.6 V), supporting precision biasing in analog sensor interfaces and power supply feedback loops.

Key Specifications

Pinout & Package

SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch), qualified per AEC-Q101, with tin-plated terminations suitable for reflow and wave soldering.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-Zener voltage regulation applications.

Compared with BZB84-C10-QR, the BZB84-B10-Q offers tighter tolerance and lower impedance at identical form factor, while MMBZ5240BS-7-F sacrifices dual functionality and power rating for compatibility with legacy SOT363 footprints.

Availability

BZB84-C10-QR is available at Aetrix Electronics and suitable for automotive ECU sensor biasing, body control module transient protection, and infotainment power supply feedback requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for BZB84-C10-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 high-volume, high-reliability logic, discrete, and MOSFET solutions, with leadership in automotive-qualified components.

The BZB84-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for robust voltage regulation and transient suppression in automotive power and signal conditioning systems.

FAQ

What is the maximum continuous forward current for BZB84-C10-QR?

The absolute maximum forward current is 200 mA per diode, as defined in the limiting values table. However, sustained operation above 100 mA is discouraged due to thermal limitations-junction temperature must remain below 150 °C, and the device's 300 mW total power dissipation limit constrains practical DC forward conduction to ≤50 mA at room ambient.

Can BZB84-C10-QR be used for bidirectional ESD protection?

No-it is not rated or characterized for ESD events per IEC 61000-4-2. Its 40 W non-repetitive peak power rating applies only to 100 μs square-wave surges (IEC 61000-4-5), not nanosecond ESD pulses. For ESD protection, dedicated TVS diodes like PESD5V0S1BA should be used instead.

How does the common-anode configuration affect PCB layout?

The shared anode (Pin 3) must connect to a low-impedance reference point-typically system ground or a stable supply rail. Cathodes (Pins 1 and 2) route separately to distinct regulated nodes, allowing independent voltage clamping or referencing without crosstalk, but requiring careful trace isolation to avoid mutual coupling in high-frequency noise environments.

Is the 10 V Zener voltage specified at DC or pulsed conditions?

V_Z = 9.4–10.6 V is guaranteed at DC test condition I_Z = 5 mA, T_j = 25 °C. The datasheet confirms this is a steady-state specification; no pulse derating is applied. Transient V_Z may shift slightly during 100 μs surges due to thermal inertia, but the 40 W rating ensures regulation remains within spec during those events.