onsemi 1N6013B_T50A

Overview

1N6013B_T50A from Fairchild Semiconductor is a 5% tolerance, 34.2 V nominal Zener diode in DO-35 glass package, rated for 500 mW power dissipation at TL ≤ 75°C with 4.0 mW/°C derating, designed for precision voltage regulation and reference applications in industrial power supplies and analog signal conditioning circuits.

For engineers reviewing the 1N6013B_T50A datasheet, pinout, applications, or equivalent options, key selection criteria include its 34.2 V ±5% Zener voltage at 5 mA test current, 95 Ω dynamic impedance at IZ, 0.1 mA leakage at 27 V reverse bias, and DO-35 mechanical compatibility with standard through-hole PCB layouts.

Technical Context

The 1N6013B_T50A operates as a two-terminal voltage reference device with sharp Zener breakdown at 34.2 V, exhibiting 95 Ω impedance at 5 mA and 700 Ω impedance at 250 μA (ZZK), enabling stable regulation under varying load conditions. Its thermal design supports operation from –65°C to +200°C junction temperature.

It features a glass-passivated DO-35 package with cathode band marking, optimized for low-leakage performance (IR = 0.1 mA max at VR = 27 V) and consistent voltage regulation across production lots with ±5% tolerance maintained at 25°C ambient.

Key Specifications

Pinout & Package

DO-35 glass axial package with cathode identified by color band; two-terminal device requiring no external biasing or control signals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 1N6013B_T50A, the ON Semiconductor 1N6013B offers identical voltage rating and package but slightly higher impedance, while the Vishay BZX55-C33 trades 1.2 V lower regulation for broader vendor availability and comparable leakage and thermal specs.

Availability

1N6013B_T50A is available at Aetrix Electronics and suitable for industrial power supply regulation, automotive sensor reference, test equipment voltage calibration, and telecom line interface protection requiring stable component supply and long-term obsolescence management.

Supply support for 1N6013B_T50A 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

Fairchild Semiconductor was a U.S.-based semiconductor company specializing in power management, analog, and discrete components before its acquisition by ON Semiconductor in 2016; its legacy Zener diode portfolio remains widely deployed in industrial and automotive systems.

The 1N6013B_T50A belongs to Fairchild's 1N5985B–1N6025B Zener diode family, engineered for high-reliability voltage reference and regulation in thermally demanding environments with strict tolerance and leakage requirements.

FAQ

What is the Zener voltage tolerance of the 1N6013B_T50A?

The 1N6013B_T50A has a ±5% Zener voltage tolerance at 25°C, meaning its actual breakdown voltage falls between 32.49 V and 35.91 V when measured at 5 mA test current. This tolerance is guaranteed across the full operating temperature range and is critical for designs relying on absolute voltage accuracy without post-assembly adjustment. The 1N6013B_T50A maintains this specification under standard DO-35 mounting conditions with 3/8″ lead length.

Does the 1N6013B_T50A support high-temperature operation?

Yes, the 1N6013B_T50A is rated for junction and storage temperatures from –65°C to +200°C, making it suitable for under-hood automotive, downhole oil/gas, and industrial motor drive applications. Its DO-35 glass package provides hermetic sealing and thermal stability, and the 500 mW power rating is maintained up to 75°C lead temperature, with linear derating beyond that point. The 1N6013B_T50A's performance remains within datasheet limits across this full range when operated within its specified electrical boundaries.

What is the maximum reverse leakage current for the 1N6013B_T50A?

The 1N6013B_T50A specifies a maximum reverse leakage current (IR) of 0.1 mA at VR = 27 V, measured at 25°C. This low leakage ensures minimal parasitic current draw in high-impedance reference circuits such as sensor excitation bridges or precision voltage dividers. The 1N6013B_T50A maintains this leakage performance across its rated temperature range, supporting stable reference behavior even in battery-powered or low-power systems.

Can the 1N6013B_T50A be used as a transient voltage suppressor?

The 1N6013B_T50A can serve as a basic transient voltage suppressor in low-energy surge scenarios due to its defined Zener breakdown at 34.2 V, but it is not rated for high-peak-power transients like dedicated TVS diodes. Its 500 mW steady-state rating and 95 mA maximum Zener current limit its clamping energy absorption capability. For robust surge protection, the 1N6013B_T50A should be paired with current-limiting resistors and used only where transient energy is well below its thermal limits.

Is the 1N6013B_T50A compatible with automated through-hole assembly?

Yes, the 1N6013B_T50A uses the industry-standard DO-35 axial glass package with 0.022″ diameter leads spaced 0.250″ apart, fully compatible with standard wave soldering, selective soldering, and hand-soldering processes. Its cathode band marking is machine-readable for automated optical inspection, and the 1N6013B_T50A's mechanical dimensions conform to IPC-7351 guidelines for DO-35 footprints, ensuring reliable placement and solder joint formation.