Nexperia USA Inc. BZB84-C11,215

Overview

BZB84-C11,215 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 delivers nominal 11 V Zener voltage (10.4–11.6 V), ±5 % tolerance, 150 mW per diode total power dissipation, and 2.5 A non-repetitive peak reverse current - used in automotive body control modules for ECU reference stabilization.

For engineers reviewing the BZB84-C11,215 datasheet, BZB84-C11,215 pinout, BZB84-C11,215 application, or BZB84-C11,215 equivalent, this page provides verified electrical parameters, thermal behavior under surge conditions, dual-diode configuration implications, and AEC-Q101 qualification evidence for automotive-grade reliability assessment.

Technical Context

This dual Zener operates in common-anode topology: pins 1 and 2 are independent cathodes, pin 3 is shared anode - enabling bidirectional clamping or dual-rail regulation from one footprint. Each diode supports 11 V nominal breakdown at I_Z = 1 mA with 150 Ω typical differential resistance and −0.1 µA to 0.1 µA reverse leakage at V_R = 8.8 V.

Thermally, it sustains 150 °C junction temperature with 417 K/W junction-to-ambient thermal resistance on FR4 PCB; its 40 W non-repetitive peak reverse power rating applies only for 100 µs square-wave pulses at T_j = 25 °C prior to surge - not continuous operation.

Key Specifications

Pinout & Package

SOT23 (TO-236AB) plastic surface-mount package: 3-pin, 1.3 mm × 2.9 mm × 1.1 mm body, gull-wing leads, tin-plated terminations 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 MMBZ5240BS-7-F and BZX84-C11-7-F, BZB84-C11,215 uniquely integrates two independently controllable 11 V Zeners in one SOT23 - delivering functional density, reduced layout complexity, and inherent matching between diodes critical for balanced clamping performance.

Availability

BZB84-C11,215 is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, medical sensor interfaces, and telecom power supervisors requiring stable component supply with AEC-Q101 compliance and long-term lifecycle support.

Supply support for BZB84-C11,215 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 cost-sensitive, space-constrained voltage regulation and transient protection in automotive and industrial systems - emphasizing AEC-Q101 qualification, tight Zener tolerances, and dual-diode integration for design simplification.

FAQ

What is the maximum continuous reverse current the BZB84-C11,215 can sustain?

The device has no specified continuous reverse current rating. Its 2.5 A non-repetitive peak reverse current (I_ZSM) applies only to 100 µs square-wave pulses. For steady-state operation, maximum DC current is limited by thermal dissipation: at 25 °C ambient, 300 mW total power allows ~27 mA per diode before exceeding P_tot - derating required above 25 °C per R_th(j-a) = 417 K/W.

Can the BZB84-C11,215 be used for bidirectional ESD protection?

Yes - its dual common-anode configuration enables bidirectional clamping: applying positive voltage to either cathode (pin 1 or 2) with anode (pin 3) grounded clamps to ~11 V; applying negative voltage to the anode with cathodes grounded clamps to ~−0.9 V via forward conduction. This meets IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact) when combined with appropriate series impedance.

How does the ±5 % tolerance affect regulation accuracy in a 12 V system?

At nominal 11 V, ±5 % tolerance means actual V_Z falls between 10.4 V and 11.6 V. In a 12 V system with 100 Ω series resistor, this creates a regulation window of 10.4–11.6 V under 1 mA test current - sufficient for reference buffering but requires downstream LDO filtering if sub-1 % accuracy is needed. The 150 Ω differential resistance adds ±0.15 V additional error at ±1 mA load change.

Is the BZB84-C11,215 suitable for use in lead-free reflow processes?

Yes - the SOT23 package uses matte tin (Sn) plating qualified for Pb-free soldering per J-STD-020. Recommended peak reflow temperature is 260 °C (max), with 60–150 s above 217 °C. Thermal resistance data (R_th(j-sp) = 100 K/W) assumes standard FR4 PCB with tin-plated copper, confirming compatibility with IPC-A-610 Class 2/3 assembly requirements.