Nexperia USA Inc. BZX79-C15,113

Overview

BZX79-C15,113 from Nexperia is a ±5% tolerance Zener voltage regulator diode in a hermetically sealed SOD27 (DO-35) glass package, rated for 15 V nominal working voltage at 5 mA test current, 500 mW total power dissipation at 50 °C ambient, and 50 nA reverse leakage at 0.7×V_Znom. It serves as a low-power voltage reference or stabilization element in linear power supplies, sensor biasing, and overvoltage protection circuits.

For engineers reviewing the BZX79-C15,113 datasheet, BZX79-C15,113 pinout, BZX79-C15,113 application, or BZX79-C15,113 equivalent, key selection criteria include its 15 V Zener voltage tolerance, differential resistance of ≤200 Ω at 5 mA, temperature coefficient of +9.2 to +13.0 mV/K, 75 nA non-repetitive peak reverse current capability, and DO-35 axial-leaded thermal profile with R_{th j-a} = 380 K/W.

Technical Context

This Zener diode operates in reverse breakdown mode with a specified V_Z = 14.7–15.3 V at I_Ztest = 5 mA and exhibits a positive temperature coefficient (+9.2 to +13.0 mV/K), indicating increasing breakdown voltage with junction temperature. Its differential resistance (r_dif) is ≤200 Ω, supporting stable regulation under moderate dynamic load changes.

The device is designed for DC or low-frequency stabilization only - it lacks transient suppression features like TVS diodes and is not rated for repetitive surge events. Its 1 MHz diode capacitance is unspecified in the BZX79-C15 data row, but typical values for adjacent voltages (e.g., BZX79-C13: 80 pF) suggest sub-100 pF behavior at zero bias.

Key Specifications

Pinout & Package

Hermetically sealed glass SOD27 (DO-35) package with axial leads: cathode identified by a colored band; anode is unmarked lead. Device is polarity-sensitive and must be reverse-biased for Zener operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX79-B15,113, the BZX79-C15,113 trades tighter voltage control for lower cost and identical form factor; versus 1N4744A, it offers better thermal performance in compact layouts but lower absolute power rating.

Availability

BZX79-C15,113 is available at Aetrix Electronics and suitable for low-voltage stabilizers, sensor biasing networks, overvoltage clamps, and ADC reference circuits requiring stable component supply across automotive, industrial, and consumer electronics programs.

Supply support for BZX79-C15,113 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, formed in 2017 from the former NXP Standard Products business, with focus on automotive, industrial, computing, and consumer markets.

The BZX79 series belongs to Nexperia's legacy Zener diode product line, engineered for cost-effective, reliable DC voltage regulation in space-constrained, low-power analog circuits.

FAQ

What is the maximum continuous Zener current for BZX79-C15,113 at 25 °C ambient?

At 25 °C ambient, the device can sustain up to 33 mA continuously (500 mW ÷ 15 V), assuming no additional PCB copper area. Derating applies above 50 °C ambient per the 380 K/W thermal resistance specification; at 70 °C, max current drops to ~25 mA to stay within junction temperature limits.

Can BZX79-C15,113 be used as a transient voltage suppressor (TVS)?

No - it is not rated for repetitive surge events. While it withstands 40 W non-repetitive pulses (100 μs), its energy handling (4 mJ) and lack of defined clamping voltage make it unsuitable for ESD or lightning surge protection. Dedicated TVS diodes like PESD5V0S1BA should be used instead.

How does the temperature coefficient affect circuit accuracy over 0–70 °C?

With S_Z = +9.2 to +13.0 mV/K, V_Z increases by 0.64–0.91 V across a 70 °C rise. In a 15 V reference, this causes 4.3–6.1% drift - acceptable for non-precision uses but requires compensation (e.g., thermistor network or digital calibration) in measurement systems demanding <0.1% stability.

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

Yes - the axial-leaded SOD27 (DO-35) package is compatible with standard wave soldering and selective soldering processes. Lead spacing is 25.4 mm (1 inch), and body diameter is 1.85 mm; ensure stencil design accounts for glass body fragility during handling and reflow preheat ramp rates.