Nexperia USA Inc. BZB84-B2V7,215

Overview

BZB84-B2V7,215 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 2.7 V Zener voltage (±2 % tolerance), ≤600 Ω differential resistance at 5 mA, and supports non-repetitive peak reverse power dissipation up to 40 W with 100 µs square-wave pulses - used in automotive body control modules for 3.3 V LDO input clamping.

For engineers reviewing the BZB84-B2V7,215 datasheet, BZB84-B2V7,215 pinout, BZB84-B2V7,215 application, or BZB84-B2V7,215 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 device integrates two identical 2.7 V Zener elements sharing a common anode (Pin 3), enabling bidirectional voltage clamping or dual-rail reference generation from a single footprint. Its ±2 % voltage tolerance and −3.5 to 0 mV/K temperature coefficient support stable regulation across −55 °C to +150 °C ambient range.

The SOT23 package supports surface-mount reflow assembly with defined solder land dimensions (0.6 mm × 0.5 mm per pad), and its 100 K/W junction-to-solder-point thermal resistance enables effective heat transfer to PCB copper when mounted on FR4 with single-sided tin-plated copper.

Key Specifications

Pinout & Package

SOT23 (TO-236AB) plastic surface-mount package: 3-terminal, small-outline transistor outline with 1.3 mm height, 2.9 mm length, and 1.3 mm width; optimized for automated placement and reflow soldering on FR4 PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZB84-C2V7,215, the BZB84-B2V7,215 offers tighter voltage control essential for precision references; compared with MMBZ5223BS-7-F, it eliminates layout duplication and improves surge coordination between clamping paths.

Availability

BZB84-B2V7,215 is available at Aetrix Electronics and suitable for automotive electronics, industrial PLC input stages, USB-C PD monitor circuits, and medical sensor signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for BZB84-B2V7,215 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 discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.

The BZB84 series targets compact, robust voltage regulation in automotive and industrial systems, emphasizing AEC-Q101 compliance, dual-diode integration, and surge resilience in miniature SOT23 packaging.

FAQ

What is the maximum continuous reverse current the BZB84-B2V7,215 can sustain?

The device does not specify a maximum continuous reverse current; instead, its DC power limit is governed by total power dissipation of 300 mW at 25 °C ambient. At nominal 2.7 V Zener voltage, this corresponds to approximately 111 mA average reverse current before thermal derating applies. Operation above this requires ambient temperature reduction per the 417 K/W junction-to-ambient thermal resistance.

Can the BZB84-B2V7,215 be used for bidirectional ESD protection?

No - the common-anode configuration supports only unidirectional clamping from either cathode to the shared anode. For true bidirectional protection (e.g., I/O line to ground and V_CC), a dedicated TVS array or back-to-back Zener pair is required. This device functions as two independent cathode-to-anode Zeners, not as a symmetric transient suppressor.

How does the −3.5 to 0 mV/K temperature coefficient affect regulation accuracy?

Over a 100 °C temperature span (−55 °C to +45 °C), the Zener voltage shifts by up to 350 mV - but actual drift is nonlinear and minimized near 2.7 V due to zero TC crossover. At 25 °C, the coefficient is near −1.5 mV/K, resulting in <±15 mV drift across 0–70 °C - sufficient for non-precision biasing but not for metrology-grade references.

Is the SOT23 footprint compatible with standard reflow profiles?

Yes - Nexperia specifies compatibility with JEDEC J-STD-020D reflow profiles. The recommended solder land dimensions (0.6 mm × 0.5 mm per pad) and stencil aperture design ensure reliable wetting and void-free joints. Thermal resistance data assumes mounting on FR4 with single-sided 35 µm copper, so PCB layout must match this construction for specified 417 K/W performance.