Nexperia USA Inc. BZB84-C4V7,215

Overview

BZB84-C4V7,215 from Nexperia is a dual common-anode Zener diode in SOT23 package, designed for precision voltage regulation and transient suppression in compact power rails. It delivers 4.4 V to 5.0 V nominal Zener voltage (±5 % tolerance), 500 Ω max differential resistance at 5 mA, 3 µA max reverse current at 2 V, and supports 6 A non-repetitive peak reverse current under 100 µs square-wave surge - used in automotive ECU power supply clamping and industrial sensor biasing.

For engineers reviewing the BZB84-C4V7,215 datasheet, BZB84-C4V7,215 pinout, BZB84-C4V7,215 application, or BZB84-C4V7,215 equivalent, key selection criteria include dual-Zener common-anode topology, AEC-Q101 qualification, 300 mW total power dissipation, and thermal resistance of 417 K/W junction-to-ambient in free air.

Technical Context

This dual Zener diode integrates two independent Zener elements sharing a common anode terminal (Pin 3), enabling bidirectional voltage clamping or dual-rail reference generation from a single SMT footprint. Its ±5 % voltage tolerance (C-series) and −3.5 mV/K to +0.2 mV/K temperature coefficient support stable regulation across −55 °C to +150 °C ambient range.

The device operates with 0.9 V forward voltage at 10 mA, exhibits 300 pF capacitance at 1 MHz/0 V, and sustains 40 W non-repetitive peak reverse power for ≤100 µs pulses - validated per IEC 60134 limiting values and AEC-Q101 stress testing for automotive reliability.

Key Specifications

Pinout & Package

SOT23 (TO-236AB) plastic surface-mounted package: 3-pin, small-outline transistor outline with gull-wing leads; 1.9 mm × 1.3 mm body, 0.95 mm height, 0.95 mm lead pitch - optimized for high-density PCB layouts and reflow soldering.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5225BS-7-F and BZX84-C4V7, BZB84-C4V7,215 uniquely delivers dual-Zener functionality in one SOT23 footprint - reducing layout complexity, improving surge coordination between rails, and lowering assembly cost in multi-voltage systems.

Availability

BZB84-C4V7,215 is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor modules, USB interface protection, and low-power IoT voltage supervision requiring stable component supply and AEC-Q101 traceability.

Supply support for BZB84-C4V7,215 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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and mobile markets.

The BZB84 series belongs to Nexperia's AEC-Q101-qualified Zener portfolio, engineered specifically for robust voltage regulation and transient suppression in harsh-environment electronics where space, reliability, and qualification compliance are mandatory.

FAQ

What is the maximum continuous power dissipation for BZB84-C4V7,215 at 70 °C ambient?

At 70 °C ambient, derating applies linearly from 300 mW at 25 °C using the thermal resistance R_th(j-a) of 417 K/W. The maximum continuous power is reduced to approximately 185 mW - calculated as 300 mW × (1 − (70 − 25)/417). This ensures junction temperature remains below 150 °C under steady-state conditions.

Can BZB84-C4V7,215 be used for bidirectional ESD protection on a differential pair?

Yes - its dual-cathode/common-anode structure allows direct connection across differential lines (e.g., RS-485 A/B), where Pin 1 clamps A to ground, Pin 2 clamps B to ground, and Pin 3 ties to system ground. This provides symmetrical ±8 kV IEC 61000-4-2 ESD protection without signal skew or added components.

How does the temperature coefficient affect regulation accuracy over −40 °C to +125 °C?

For BZB84-C4V7,215, the temperature coefficient ranges from −3.5 mV/K to +0.2 mV/K near 4.7 V. Over −40 °C to +125 °C, this introduces up to ±57 mV drift - well within ±100 mV total variation budget for most 5 V rail supervision applications, especially when combined with its tight 4.4–5.0 V initial tolerance.

Is the SOT23 package compatible with standard reflow profiles for lead-free assembly?

Yes - Nexperia specifies compatibility with JEDEC J-STD-020D reflow profiles. The SOT23 package withstands peak temperatures up to 260 °C for ≤40 seconds, with ramp rates ≤3 °C/s pre-peak and cooling rate ≥1 °C/s post-peak, matching standard Pb-free SAC305 processes without delamination or solder joint voiding.