Nexperia USA Inc. BZX79-B6V8,113

Overview

BZX79-B6V8,113 from Nexperia is a ±2% tolerance Zener voltage regulator diode in a hermetically sealed SOD27 (DO-35) glass package, designed for low-power voltage reference and stabilization at 6.8 V nominal with 30 Ω typical differential resistance and +3.0 mV/K temperature coefficient at 5 mA test current. It delivers stable regulation in power supply feedback paths, sensor biasing circuits, and precision analog references.

For engineers reviewing the BZX79-B6V8,113 datasheet, BZX79-B6V8,113 pinout, BZX79-B6V8,113 application, or BZX79-B6V8,113 equivalent, this part supports design validation of low-voltage reference stability, thermal drift compensation, and surge-tolerant clamping in space-constrained through-hole layouts.

Technical Context

This Zener diode operates in reverse breakdown mode with a nominal regulated voltage of 6.66–6.94 V at 5 mA test current, exhibiting low dynamic impedance (30–80 Ω) and positive temperature coefficient (+1.2 to +4.5 mV/K), enabling predictable drift behavior across −65 °C to +200 °C junction temperature range. Its non-repetitive peak reverse power dissipation is rated at 40 W for 100 μs pulses.

Designed for DC voltage reference and overvoltage protection, it features 2 μA maximum reverse leakage at 4 V, 0.9 V forward voltage at 10 mA, and 200 pF diode capacitance at 0 V reverse bias and 1 MHz - parameters critical for noise-sensitive analog signal conditioning and transient suppression in linear regulators.

Key Specifications

Pinout & Package

Hermetically sealed axial-leaded SOD27 (DO-35) glass package with cathode indicated by a colored band. Leads are tinned copper-clad steel, suitable for wave or hand soldering.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener voltage reference applications.

Compared with MMBZ5235B,115 and BZX79-C6V8,113, the BZX79-B6V8,113 offers superior voltage accuracy and lower dynamic impedance in a proven through-hole package - critical for lab validation, repair, and industrial systems requiring long-term calibration stability.

Availability

BZX79-B6V8,113 is available at Aetrix Electronics and suitable for power supply reference design, sensor biasing circuits, overvoltage protection, and analog signal conditioning requiring stable component supply and long-lifecycle support.

Supply support for BZX79-B6V8,113 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 leader in discrete, logic, and PowerMOS semiconductors, spun off from NXP in 2017 and focused on automotive, industrial, computing, and consumer markets.

The BZX79 series belongs to Nexperia's legacy voltage regulator diode product line, engineered for reliable low-power voltage reference and stabilization in cost-sensitive, high-volume applications with stringent long-term stability requirements.

FAQ

What is the maximum continuous power dissipation for BZX79-B6V8,113 at 50 °C ambient?

The maximum continuous total power dissipation is 500 mW when mounted on a PCB with ≤8 mm lead length and tie-point temperature ≤50 °C. Derating is required above 50 °C ambient per the 380 K/W junction-to-ambient thermal resistance - e.g., 300 mW at 75 °C ambient.

How does the temperature coefficient affect regulation accuracy over −40 °C to +85 °C?

With a typical +3.0 mV/K coefficient at 5 mA, the Zener voltage shifts approximately +225 mV across a 75 K range - from ~6.58 V at −40 °C to ~6.80 V at +85 °C. This drift is predictable and can be compensated in closed-loop systems using matched components.

Can BZX79-B6V8,113 be used in place of a 6.8 V TL431-based reference?

No - the BZX79-B6V8,113 is a passive two-terminal Zener diode requiring external current limiting, while the TL431 is an active three-terminal adjustable shunt regulator with 0.5% initial accuracy and built-in reference amplifier. They differ fundamentally in topology, accuracy, and drive capability.

Is the SOD27 package RoHS-compliant and lead-free?

Yes - Nexperia confirms the BZX79-B6V8,113 meets RoHS Directive 2011/65/EU and is manufactured with lead-free terminations. The glass body contains no restricted substances, and the device carries the "Pb-free" marking per JEDEC J-STD-609.