Nexperia USA Inc. BZB84-C6V8,215

Overview

BZB84-C6V8,215 from Nexperia is a dual common-anode Zener diode in SOT23 package, designed for precision voltage regulation and overvoltage protection in compact DC power rails. It delivers nominal 6.8 V Zener voltage (±5 % tolerance), 80 Ω typical differential resistance at 5 mA, 2 µA max reverse current at 5.2 V, 4.5 mV/K temperature coefficient, and 200 pF capacitance - deployed in automotive body control modules for ECU reference voltage stabilization.

For engineers reviewing the BZB84-C6V8,215 datasheet, BZB84-C6V8,215 pinout, BZB84-C6V8,215 application, or BZB84-C6V8,215 equivalent, key selection criteria include dual-Zener common-anode topology for bidirectional clamping, AEC-Q101 qualification for under-hood use, 300 mW total power dissipation, and SOT23 footprint compatibility with high-density PCB layouts.

Technical Context

This dual Zener diode integrates two independent 6.8 V Zener elements sharing a common anode (Pin 3), enabling symmetrical clamping of positive and negative transients across a single node. Its ±5 % voltage tolerance (6.4 V to 7.2 V) and 4.5 mV/K temperature coefficient ensure stable regulation over −55 °C to +150 °C ambient range.

The device supports non-repetitive surge handling up to 40 W (100 µs square wave, T_j = 25 °C) and operates within 200 mA forward current limit. Thermal resistance from junction to ambient is 417 K/W on FR4 PCB, defining derating behavior in thermally constrained designs.

Key Specifications

Pinout & Package

SOT23 (TO-236AB) plastic surface-mount package: 3-terminal, 1.3 mm × 2.9 mm footprint, 1.1 mm height, tin-plated leads compatible with standard reflow profiles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZB84-C6V8,215, the BZB84-B6V8,215 improves voltage accuracy at the expense of higher cost, while MMBZ5235B-7-F sacrifices bidirectional capability for higher continuous power - making the original part optimal for space-constrained, AEC-Q101-compliant bidirectional clamping.

Availability

BZB84-C6V8,215 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and smart metering systems requiring stable component supply with AEC-Q101 traceability and SOT23 footprint consistency.

Supply support for BZB84-C6V8,215 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 essential semiconductors for automotive, industrial, and consumer markets.

The BZB84 series belongs to Nexperia's AEC-Q101-qualified Zener portfolio, engineered specifically for robust voltage regulation and transient protection in harsh automotive environments.

FAQ

What is the maximum continuous reverse voltage this diode can regulate at?

The BZB84-C6V8,215 is rated for continuous operation at its nominal Zener voltage of 6.8 V (6.4 V–7.2 V range). It must not be subjected to sustained reverse voltages exceeding 7.2 V, as that exceeds its specified working voltage limit and risks thermal runaway under load.

Can this dual-Zener replace two separate single Zeners in a design?

Yes - its common-anode configuration replaces two discrete Zeners with one SOT23 device, reducing PCB area by ~40 % and eliminating solder joint variability between paired components. Pin 1 and Pin 2 serve as independent cathodes, while Pin 3 is the shared anode reference point.

Is the 40 W peak power rating applicable to both diodes simultaneously?

No - the 40 W non-repetitive peak reverse power dissipation (P_ZSM) applies per diode, meaning each Zener element can independently handle a 40 W transient. Simultaneous conduction is not characterized and would exceed thermal limits; the device is intended for alternating polarity clamping, not concurrent surge absorption.

How does the +1.2 mV/K temperature coefficient affect long-term voltage stability?

At +1.2 mV/K, the Zener voltage increases by approximately 120 mV over a 100 °C rise (e.g., from 25 °C to 125 °C). This predictable positive drift allows system designers to compensate in firmware or select complementary components, unlike unregulated diodes with negative coefficients that degrade reference accuracy at high temperature.