Nexperia USA Inc. BZX79-C5V6,133

Overview

BZX79-C5V6,133 from Nexperia is a ±5% tolerance Zener voltage regulator diode in a hermetically sealed SOD27 (DO-35) glass package, rated for 5.49–6.0 V nominal Zener voltage at 5 mA test current, 500 mW total power dissipation at 50 °C ambient, and 1 μA reverse leakage at 2 V reverse bias. It serves as a low-power voltage reference or stabilization element in linear power supply feedback paths, sensor bias networks, and overvoltage clamp circuits.

For engineers reviewing the BZX79-C5V6,133 datasheet, BZX79-C5V6,133 pinout, BZX79-C5V6,133 application, or BZX79-C5V6,133 equivalent, this page delivers verified electrical parameters, thermal limits, differential resistance (80–400 Ω), temperature coefficient (−2.0 to +1.2 mV/K), and real-world use context for precision analog design and industrial signal conditioning.

Technical Context

This Zener diode operates in reverse breakdown mode with a specified Zener voltage of 5.49–6.0 V at I_Z = 5 mA, exhibiting a typical differential resistance of 80 Ω and a temperature coefficient ranging from −2.0 to +1.2 mV/K - indicating stable regulation near zero TC at mid-current. Its non-repetitive peak reverse power dissipation is rated at 40 W for 100 μs pulses.

Designed for low-current (<250 mA forward, <6 A surge reverse) stabilization, it features a junction-to-ambient thermal resistance of 380 K/W (unmounted, max lead length), 300 K/W junction-to-tie-point, and a maximum storage temperature of +200 °C. Capacitance is 300 pF at 0 V and 1 MHz.

Key Specifications

Pinout & Package

Two-terminal axial device in SOD27 (DO-35) hermetically sealed glass package; cathode identified by a colored band. No active pin numbering - anode and cathode are unidirectional terminals defined by polarity marking.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 1N4734A, BZX79-C5V6,133 offers tighter thermal coupling in compact layouts and better TC consistency; versus BZX55-C5V6, it shares identical specs but benefits from Nexperia's extended lifecycle support and automotive-grade process control.

Availability

BZX79-C5V6,133 is available at Aetrix Electronics and suitable for industrial sensor biasing, linear power supply feedback, and overvoltage clamp protection requiring stable component supply, long-term obsolescence management, and RoHS-compliant sourcing.

Supply support for BZX79-C5V6,133 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 standard Zener diode portfolio, engineered for reliable voltage reference and stabilization in cost-sensitive, high-volume applications where hermetic sealing and ±5% tolerance deliver optimal balance of performance and manufacturability.

FAQ

What is the maximum continuous Zener current for BZX79-C5V6,133 at 70 °C ambient?

At 70 °C ambient, derated power dissipation is 350 mW (per linear derating from 500 mW at 50 °C). With V_Z ≈ 5.6 V, maximum continuous Zener current is ~62.5 mA. Exceeding this risks thermal runaway due to R_{th j-a} = 380 K/W and limited heat sinking in DO-35.

Does BZX79-C5V6,133 support bidirectional ESD protection?

No - it is a unidirectional Zener diode optimized for reverse-bias regulation. Forward conduction is limited to 250 mA and lacks symmetric clamping characteristics. For bidirectional ESD protection, use dedicated TVS diodes such as PESD5V0S1BA.

Can BZX79-C5V6,133 be used in place of a 5.1 V Zener in a precision reference circuit?

No - its 5.49–6.0 V range exceeds 5.1 V by >7%. Substituting would shift reference voltage, alter feedback gain, and likely cause output overregulation. Use BZX79-C5V1,133 for 5.1 V applications.

Is the SOD27 package compatible with wave soldering processes?

Yes - the hermetic glass SOD27 package is qualified for wave soldering with peak temperatures ≤ 260 °C for ≤ 10 seconds. Preheating to 100–150 °C and minimizing dwell time above 200 °C prevents internal stress cracking and seal integrity loss.