Nexperia USA Inc. BZB84-C47,215

Overview

BZB84-C47,215 from Nexperia is a dual common-anode Zener diode in SOT23 (TO-236AB) package, designed for precision voltage regulation and transient suppression in compact DC power rails. It provides 47 V nominal Zener voltage (±5 % tolerance), 375 Ω typical differential resistance at 2 mA, and 40 W non-repetitive peak reverse power dissipation - enabling robust overvoltage clamping in automotive body control modules and industrial sensor interfaces.

For engineers reviewing the BZB84-C47,215 datasheet, BZB84-C47,215 pinout, BZB84-C47,215 application, or BZB84-C47,215 equivalent, this page delivers verified electrical parameters, validated dual-diode terminal roles, AEC-Q101 qualification status, and real-world use cases in voltage reference and surge protection circuits - all derived from Nexperia's official Rev. 03 product data sheet.

Technical Context

This dual-Zener device integrates two independent 47 V Zener elements sharing a common anode (Pin 3), supporting bidirectional clamping or dual-rail regulation without external node tying. Its ±5 % voltage tolerance (44.0–50.0 V) and −2.0 to +2.5 mV/K temperature coefficient ensure stable reference performance across −55 °C to +150 °C ambient ranges.

The SOT23 package enables surface-mount assembly with 100 K/W junction-to-solder-point thermal resistance, while its 300 mW total power dissipation and 40 W pulse rating (100 µs square wave) support both steady-state regulation and transient energy absorption in space-constrained designs.

Key Specifications

Pinout & Package

SOT23 (TO-236AB) plastic surface-mounted package: 3-pin, 1.9 mm × 1.3 mm footprint, 1.1 mm height, tin-plated leads compatible with reflow and wave soldering per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5270BS-7-F and BZX84-C47,215, the BZB84-C47,215 uniquely delivers integrated dual-cathode clamping in one SOT23 footprint - reducing component count by 50 %, improving thermal tracking between regulation paths, and lowering system-level EMI through minimized loop area.

Availability

BZB84-C47,215 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, USB-C power delivery monitors, and smart meter voltage references requiring stable component supply with AEC-Q101 compliance and long-lifecycle support.

Supply support for BZB84-C47,215 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 consumer markets.

The BZB84 series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for compact, high-reliability voltage regulation and transient suppression in harsh-environment electronics.

FAQ

What is the maximum continuous reverse voltage the BZB84-C47,215 can regulate without breakdown?

The BZB84-C47,215 maintains stable Zener conduction at up to 50.0 V (maximum specified V_Z) under continuous DC conditions at I_Z = 2 mA and T_j = 25 °C. Operation above this voltage risks exceeding its 300 mW total power dissipation limit unless derated per ambient temperature - e.g., 150 mW at 70 °C ambient per the thermal resistance curve.

How does the common-anode configuration affect circuit layout compared to two separate Zeners?

The common-anode configuration (Pin 3) eliminates the need to route and solder two separate anode connections, reducing PCB trace length by ~40 % and minimizing parasitic inductance in high-dI/dt transient paths. It also ensures identical thermal coupling between both Zener junctions, improving voltage matching during temperature transients.

Is the BZB84-C47,215 suitable for bidirectional ESD protection on differential signal lines?

No - the BZB84-C47,215 is not rated for IEC 61000-4-2 ESD immunity. Its 40 W non-repetitive peak power rating applies only to 100 µs square-wave surges (per IEC 61000-4-5), not nanosecond ESD pulses. For bidirectional ESD protection, dedicated TVS arrays like PESD5V0S1BA are required.

Can the BZB84-C47,215 replace the BZB84-B47,215 in an existing design?

Yes - both share identical SOT23 package, pinout, and 47 V nominal Zener voltage, but the BZB84-C47,215 has ±5 % tolerance versus ±2 % for the B-series. This wider tolerance increases V_Z spread (44.0–50.0 V vs. 46.1–47.9 V), which may affect regulation accuracy in precision references but is acceptable for general-purpose clamping where margin exists.