Nexperia USA Inc. BZX79-B36,113

Overview

BZX79-B36,113 from Nexperia is a ±2% tolerance Zener voltage regulator diode with nominal breakdown voltage of 36 V at 2 mA test current, 80 Ω typical differential resistance, and −26.0 mV/K temperature coefficient. It operates as a low-power voltage reference in biasing, regulation, and overvoltage protection circuits, rated for 500 mW total power dissipation at 50 °C ambient and packaged in hermetically sealed SOD27 (DO-35) glass.

For engineers reviewing the BZX79-B36,113 datasheet, BZX79-B36,113 pinout, BZX79-B36,113 application, or BZX79-B36,113 equivalent, this page delivers verified electrical parameters, thermal behavior, reverse leakage limits at VR = 0.7×VZnom, non-repetitive surge capability (45 A peak reverse current), and package-specific thermal resistance (R_{th j-a} = 380 K/W).

Technical Context

This Zener diode functions in reverse-biased breakdown mode to maintain stable DC reference voltage under varying load and temperature conditions. Its −26.0 mV/K temperature coefficient indicates moderate negative drift above 30 V, requiring compensation in precision references.

The device exhibits 35 pF junction capacitance at 0 V and 1 MHz, limiting high-frequency noise filtering use; its 80 Ω differential resistance at 2 mA implies ~1.8 mV/mA output variation across small current changes, suitable for coarse regulation but not high-accuracy feedback paths.

Key Specifications

Pinout & Package

Hermetically sealed axial-leaded SOD27 (DO-35) glass package with cathode indicated by a black 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-B36,113, the 1N4749A trades tighter thermal performance for looser voltage tolerance and larger footprint, while the BZX84-C36 sacrifices surge robustness and hermetic reliability for miniaturization-making the BZX79-B36,113 optimal for industrial-grade through-hole references demanding long-term stability and transient resilience.

Availability

BZX79-B36,113 is available at Aetrix Electronics and suitable for industrial power supply references, telecom overvoltage protection, sensor biasing circuits, and signal level translation requiring stable component supply and long-lifecycle support.

Supply support for BZX79-B36,113 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, spun off from NXP in 2017, specializing in high-volume, automotive-qualified diodes, MOSFETs, and logic devices.

The BZX79 series belongs to Nexperia's legacy Zener voltage regulator portfolio, engineered for cost-effective, reliable DC voltage stabilization in consumer, industrial, and computing applications where hermetic sealing and ±2% tolerance deliver measurable system-level robustness.

FAQ

What is the maximum continuous reverse voltage before breakdown for BZX79-B36,113?

The BZX79-B36,113 begins controlled reverse breakdown at 35.3 V (minimum specified V_Z). Applying more than 35.3 V in reverse bias will cause increasing current flow; sustained operation above 36.7 V risks exceeding power limits unless current is strictly limited to maintain P_tot ≤ 500 mW at the given ambient temperature.

Can BZX79-B36,113 be used in parallel for higher power dissipation?

No-Zener diodes exhibit manufacturing variations in V_Z and r_dif, causing current imbalance when paralleled. One device will conduct most of the current and overheat. For higher power, use a single higher-rated Zener or switch to an active regulator topology with current-sharing design.

How does the −26.0 mV/K temperature coefficient affect accuracy over −40 °C to +125 °C?

Across that 165 K range, the voltage shift is approximately −4.29 V (−26.0 mV/K × 165 K), resulting in a total V_Z span from ~31.7 V to ~40.3 V. This 8.6 V spread must be accommodated in system tolerance budgets or compensated via external circuitry such as thermistors or op-amp correction networks.

Is the SOD27 package compatible with wave soldering processes?

Yes-the SOD27 (DO-35) glass package is rated for standard wave soldering profiles with peak temperatures ≤ 260 °C and dwell time ≤ 5 seconds. Lead finish is tin-lead or lead-free depending on date code; ensure flux chemistry matches the plating to avoid dewetting or corrosion during cleaning.