Nexperia USA Inc. BZX79-C7V5,133

Overview

BZX79-C7V5,133 from Nexperia is a ±5% tolerance Zener voltage regulator diode in a hermetically sealed SOD27 (DO-35) glass package, rated for 7.5 V nominal stabilization at 5 mA test current, with 30–80 Ω differential resistance, 2.5–5.3 mV/K temperature coefficient, and 500 mW total power dissipation at T_amb = 50 °C. It serves as a low-power voltage reference in linear regulators and signal conditioning circuits.

For engineers reviewing the BZX79-C7V5,133 datasheet, BZX79-C7V5,133 pinout, BZX79-C7V5,133 application, or BZX79-C7V5,133 equivalent, this page delivers verified electrical parameters, thermal behavior, reverse leakage at 5 V (≤1 μA), junction-to-ambient thermal resistance (380 K/W), and direct substitution guidance - all critical for precision biasing and analog reference design.

Technical Context

This Zener diode operates in reverse breakdown to maintain stable DC voltage under varying load and temperature conditions. Its 7.5 V nominal Zener voltage is specified at I_Ztest = 5 mA, with differential resistance of 30–80 Ω ensuring minimal output variation across operating current range.

The device exhibits a positive temperature coefficient of +2.5 to +5.3 mV/K, making it suitable for temperature-compensated references when paired with negative-coefficient components. Its 150 pF diode capacitance at 0 V and 1 MHz supports stable operation in low-frequency regulation without parasitic resonance concerns.

Key Specifications

Pinout & Package

Hermetically sealed axial-leaded SOD27 (DO-35) glass package with cathode indicated by a band. Leads are tinned copper-clad steel; body diameter 1.85 mm, length 4.25 mm, lead spacing 25.4 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX79-B7V5,133, this part trades accuracy for cost and availability; versus 1N4733A, it offers smaller footprint and lower thermal mass but reduced power handling - critical for compact, low-power analog subsystems.

Availability

BZX79-C7V5,133 is available at Aetrix Electronics and suitable for power supply feedback networks, sensor bias references, overvoltage clamping, and microcontroller reset circuits requiring stable component supply and long-term parametric consistency.

Supply support for BZX79-C7V5,133 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, formed in 2017 from the former NXP Standard Products division, serving automotive, industrial, computing, and consumer markets.

The BZX79 series belongs to Nexperia's voltage regulator diode product line, designed specifically for low-power, high-stability voltage reference and clamping applications in cost-sensitive, space-constrained systems.

FAQ

What is the maximum continuous reverse current this diode can handle?

The BZX79-C7V5,133 has no defined maximum continuous reverse current rating; its safe operating area is governed by power dissipation limits. At 50 °C ambient, it supports up to 500 mW, corresponding to ~66.7 mA at 7.5 V. Exceeding this causes thermal runaway due to positive temperature coefficient behavior.

Can this Zener diode be used in AC signal clipping applications?

Yes - its symmetrical forward voltage (~0.9 V at 10 mA) and controlled reverse breakdown enable bidirectional clipping. However, forward conduction introduces asymmetry; for balanced clipping, pair with another diode or use back-to-back configuration with matched units.

How does the temperature coefficient affect long-term reference stability?

With a +2.5 to +5.3 mV/K coefficient, output voltage increases ~19–40 mV over a 75 °C rise (e.g., 25 °C to 100 °C junction). For stable references, combine with negative-tempco components or operate within narrow ambient ranges using thermal isolation.

Is the SOD27 package compatible with automated through-hole assembly?

Yes - the SOD27 (DO-35) package features axial leads with standardized 25.4 mm pitch and tinned terminations, fully compatible with wave soldering and selective soldering processes used in high-volume through-hole manufacturing.