Nexperia USA Inc. BZX79-C4V3,113

Overview

BZX79-C4V3,113 from Nexperia is a ±5% tolerance Zener voltage regulator diode in a hermetically sealed SOD27 (DO-35) glass package, rated for 4.3 V nominal Zener voltage at 5 mA test current, 410–600 Ω differential resistance, and 500 mW total power dissipation at T_amb = 50 °C. 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-C4V3,113 datasheet, BZX79-C4V3,113 pinout, BZX79-C4V3,113 application, or BZX79-C4V3,113 equivalent, this page delivers verified electrical parameters, thermal behavior, reverse leakage at VR = 1 V (≤3 μA), temperature coefficient (−3.5 to −2.5 mV/K), and package dimensions - all critical for precision analog design and BOM validation.

Technical Context

This Zener diode operates in reverse breakdown mode with tightly controlled V_Z tolerance (±5%), enabling stable DC reference generation without active regulation. Its differential resistance (410–600 Ω at I_Z = 5 mA) and low temperature coefficient (−2.5 mV/K typical) support predictable voltage drift across industrial temperature ranges.

The device uses axial-leaded SOD27 packaging with hermetic glass sealing, ensuring long-term reliability under humidity and thermal cycling. Non-repetitive peak reverse power dissipation reaches 40 W for 100 μs pulses, supporting transient suppression in low-energy surge scenarios when paired with series impedance.

Key Specifications

Pinout & Package

Hermetically sealed axial-leaded SOD27 (DO-35) glass package with cathode band marking; lead diameter 0.45–0.56 mm, body length 4.25 mm, overall length 25.4 mm.

Key Features

Applications

Availability

BZX79-C4V3,113 is available at Aetrix Electronics and suitable for industrial power supplies, sensor interface modules, overvoltage protection circuits, and signal conditioning subsystems requiring stable component supply and long-lifecycle support.

Supply support for BZX79-C4V3,113 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 semiconductors, formed in 2017 following the spin-off of NXP's Standard Products division, with core expertise in automotive-grade, industrial, and consumer power and signal components.

The BZX79 series belongs to Nexperia's legacy Zener diode portfolio designed specifically for cost-sensitive, high-reliability voltage reference and stabilization applications in non-safety-critical analog circuits.

FAQ

What is the maximum continuous power dissipation for BZX79-C4V3,113 at 70 °C ambient?

At T_amb = 70 °C, the device must be derated from its 500 mW rating at 50 °C using R_{th j-a} = 380 K/W. The junction-to-ambient thermal resistance implies a 1.32 mW/°C derating slope above 50 °C, resulting in a maximum continuous power of approximately 235 mW at 70 °C to maintain T_j ≤ 200 °C.

Can BZX79-C4V3,113 replace BZX79-B4V3 in a precision reference circuit?

No - the BZX79-C4V3,113 has ±5% tolerance versus ±2% for the BZX79-B4V3, leading to potential V_Z spread from 4.0 V to 4.6 V. In precision references where absolute accuracy matters, this introduces up to ±7% error versus ±3%, making it unsuitable unless system-level calibration compensates.

What is the typical Zener voltage at 1 mA test current for this part?

Per Table 1, the BZX79-C4V3 exhibits a nominal V_Z of 4.3 V at I_Z = 5 mA. At I_Z = 1 mA, V_Z drops slightly due to dynamic resistance; typical value is ~4.25 V, consistent with the 410–600 Ω r_dif range and measured forward knee behavior shown in Fig.4.

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

Yes - Nexperia confirms the BZX79-C4V3,113 in SOD27 packaging meets RoHS Directive 2011/65/EU and is lead-free, with lead finish conforming to JEDEC J-STD-609 Category 1 (Pb-free). Full compliance documentation is available via Nexperia's product change notices (PCNs) dated post-2006.