Nexperia USA Inc. BZB84-B9V1,215

Overview

BZB84-B9V1,215 from Nexperia is a dual common-anode Zener diode in SOT23 package, designed for precision voltage regulation and transient suppression in compact PCB layouts. It delivers nominal 9.1 V Zener voltage (±2 % tolerance), 100 Ω typical differential resistance at 5 mA, 0.5 µA max reverse current at 7.3 V, and supports non-repetitive peak reverse power up to 40 W - used in automotive ECU power rail clamping and industrial sensor signal conditioning.

For engineers reviewing the BZB84-B9V1,215 datasheet, BZB84-B9V1,215 pinout, BZB84-B9V1,215 application, or BZB84-B9V1,215 equivalent, key selection criteria include dual-Zener common-anode topology, AEC-Q101 qualification, 300 mW total power dissipation, and thermal resistance of 100 K/W junction-to-solder-point - critical for high-reliability automotive and industrial designs requiring stable bidirectional voltage reference.

Technical Context

This dual-Zener device integrates two independent Zener diodes sharing a common anode (Pin 3), enabling symmetrical clamping or dual-voltage reference generation in a single SMT footprint. Its ±2 % voltage tolerance and low temperature coefficient (3.8–7.0 mV/K) ensure stable regulation across −55 °C to +150 °C ambient.

The device operates with forward voltage ≤0.9 V at 10 mA and exhibits 150 pF diode capacitance at 1 MHz/0 V, supporting fast transient response in ESD protection and overvoltage limiting circuits. Its 40 W non-repetitive peak reverse power rating (100 µs square wave) enables robust surge handling without external series impedance.

Key Specifications

Pinout & Package

SOT23 (TO-236AB) plastic surface-mount package: 3-pin, small-outline transistor outline with gull-wing leads; dimensions 2.9 × 1.3 × 1.0 mm (L × W × H); rated for 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 MMBZ5240BS-7-F and BZX84-B9V1,215, the BZB84-B9V1,215 uniquely delivers dual-Zener functionality in one SOT23 footprint - reducing BOM count by 50 % and eliminating thermal mismatch between paired devices in precision analog and automotive safety-critical circuits.

Availability

BZB84-B9V1,215 is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor modules, USB-C interface protection, and telecom line driver circuits requiring stable component supply with AEC-Q101 assurance and long-term lifecycle support.

Supply support for BZB84-B9V1,215 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 logic, discrete, and MOSFET solutions, with leadership in automotive-grade components and advanced packaging.

The BZB84 series belongs to Nexperia's AEC-Q101-qualified Zener portfolio, engineered specifically for automotive power management, industrial control, and communication interface protection where dual-voltage reference and surge resilience are essential.

FAQ

What is the maximum continuous reverse current the BZB84-B9V1,215 can sustain at 25 °C?

The device supports up to 200 mA forward current (I_F), but for Zener operation, the maximum continuous reverse current is determined by its 300 mW total power dissipation limit. At nominal 9.1 V, this yields ~33 mA continuous Zener current (300 mW ÷ 9.1 V) before thermal derating begins at ambient temperatures above 25 °C.

How does the common-anode configuration affect PCB layout compared to discrete Zeners?

The common-anode pin (Pin 3) reduces net count by one versus two separate Zeners, simplifying routing and minimizing parasitic inductance between cathodes. It also ensures matched thermal coupling - critical for applications where voltage drift must be minimized across temperature, such as precision ADC references.

Is the BZB84-B9V1,215 suitable for bidirectional TVS applications?

No - it is not rated as a TVS diode. While it provides non-repetitive 40 W surge capability, its 150 pF capacitance and lack of specified clamping voltage (V_C) at standardized test currents (e.g., I_PP = 1 A) mean it should not replace dedicated bidirectional TVS devices like PESD5V0S1BA in IEC 61000-4-2 ESD protection.

What marking code identifies the BZB84-B9V1,215 on the SOT23 package?

The device is marked "VR*" on the top surface of the SOT23 package, where "*" indicates manufacturing location: "-" = Hong Kong, "p" = Hong Kong, "t" = Malaysia, or "W" = China. This matches Table 4 in the Nexperia datasheet Rev. 03.