Nexperia USA Inc. BZB84-C30,215

Overview

BZB84-C30,215 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 30 V Zener voltage (28.0–32.0 V), ±5 % tolerance, 300 mW total power dissipation, and 1.00 A non-repetitive peak reverse current under 100 µs surge conditions - deployed in automotive body control modules and industrial sensor signal conditioning circuits.

For engineers reviewing the BZB84-C30,215 datasheet, BZB84-C30,215 pinout, BZB84-C30,215 application, or BZB84-C30,215 equivalent, this page provides verified Zener voltage range, thermal resistance, differential resistance, temperature coefficient, and dual-diode configuration details critical for ESD-tolerant voltage clamping and bidirectional reference design.

Technical Context

This dual Zener diode integrates two independent 30 V Zener elements sharing a common anode terminal (Pin 3), enabling symmetrical clamping of positive and negative transients on a single node. Its 300 mW total power rating applies across both diodes simultaneously, with thermal resistance from junction to ambient at 417 K/W on FR4 PCB.

The device operates within −55 °C to +150 °C ambient range and features a temperature coefficient of +21.0 to +29.4 mV/K at I_Z = 2 mA - indicating stable regulation across temperature when used in bias networks requiring low drift. Differential resistance is ≤300 Ω at 2 mA, supporting tight regulation in low-current reference paths.

Key Specifications

Pinout & Package

SOT23 (TO-236AB) plastic surface-mount package: 3-terminal, small-outline transistor outline with gull-wing leads; 2.8 mm × 1.4 mm footprint, 1.1 mm height, suitable for automated placement and reflow soldering.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5262BS-7-F and BZX84-C30LT1G, BZB84-C30,215 uniquely delivers integrated bidirectional clamping in one SOT23 footprint with matched thermal behavior - reducing component count by 50 % and improving surge response consistency in automotive and industrial monitoring designs.

Availability

BZB84-C30,215 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, USB-C power delivery protection, and smart metering systems requiring stable component supply with AEC-Q101 compliance and traceable sourcing.

Supply support for BZB84-C30,215 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, analog, and discrete components - headquartered in Nijmegen, Netherlands, with manufacturing in Asia and Europe.

The BZB84 series belongs to Nexperia's automotive-qualified Zener portfolio, engineered specifically for robust voltage regulation and transient suppression in harsh-environment ECUs, ADAS subsystems, and industrial control units.

FAQ

What is the maximum continuous reverse current for BZB84-C30,215 at 25 °C ambient?

The device does not specify a maximum continuous reverse current; instead, it defines total power dissipation of 300 mW at T_amb ≤ 25 °C. At nominal 30 V Zener voltage, this corresponds to ~10 mA average reverse current. Operation beyond this requires thermal derating per the 417 K/W junction-to-ambient thermal resistance.

Can BZB84-C30,215 replace a single Zener diode in a 30 V reference circuit?

Yes - Pin 1 and Pin 3 form a standard 30 V Zener pair (cathode-anode), identical in electrical behavior to a single Zener. Pin 2 remains unused or grounded. The dual structure adds no penalty in single-diode mode and retains full AEC-Q101 qualification and thermal specs.

How does the common-anode configuration affect PCB layout for bidirectional clamping?

It simplifies layout by allowing both cathodes (Pins 1 and 2) to connect directly to the same signal node, while the common anode (Pin 3) routes to ground or bias rail. This eliminates inter-diode traces, reduces loop inductance by >35 %, and improves high-frequency surge immunity compared to discrete dual-Zener layouts.

Is the 1.00 A non-repetitive peak reverse current rated per diode or for the entire package?

Rated per diode - each Zener element (Pin 1–Pin 3 and Pin 2–Pin 3) independently supports 1.00 A for 100 µs square-wave pulses at T_j = 25 °C. Simultaneous conduction in both diodes is not specified and must be avoided to prevent exceeding 300 mW total package dissipation.