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1N5346BRLG

ON1N5346BRLG

onsemi
Zener Diode 9.1 V 5 W ±5% Through Hole Axial
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Overview

The 1N5346BRLG is a high-power 5 Watt Zener diode from onsemi designed for voltage regulation and transient protection. It features a nominal Zener voltage of 9.1 V and is housed in a rugged T-18 axial lead package. This device is capable of handling surge ratings up to 180 W, making it suitable for demanding power supply applications.

Why Choose This Part

The 5 W power rating allows for significant current handling compared to standard small-signal Zeners, with a low maximum impedance of 2 Ohms at the test current. Its wide operating temperature range from -65 degC to 200 degC ensures reliability in extreme thermal environments. Additionally, it offers a high ESD rating of Class 3 per the Human Body Model.

Applications

Voltage Regulation
Providing a stable 9.1 V reference or rail for analog and digital circuits requiring higher current than standard 1 W Zeners.
Overvoltage Clipping
Protecting sensitive downstream components by clipping voltage spikes and surges up to 180 W.
Power Supply Shunt
Acting as a shunt regulator in power circuits where 5 W of power dissipation is required.

Key Specifications

Tolerance +/-5%
Power - Max 5 W
Mounting Type Through Hole
Package / Case T-18, Axial
Impedance (Max) (Zzt) 2 Ohms
Operating Temperature -65degC ~ 200degC
Supplier Device Package Axial
Voltage - Zener (Nom) (Vz) 9.1 V
Current - Reverse Leakage @ Vr 7.5 uA @ 6.9 V
Voltage - Forward (Vf) (Max) @ If 1.2 V @ 1 A

Getting Started

When designing with this axial component, ensure adequate lead length and copper pad area to manage the 5 W heat dissipation. For prototyping, the T-18 package is compatible with standard 0.1 inch pitch breadboards or through-hole perfboards. Calculate the series resistor value based on the 9.1 V nominal voltage and the 2 Ohm maximum Zzt to ensure the diode stays within its safe operating area.