1N5346B

Overview

The onsemi 1N5346B is a 5 Watt Zener voltage regulator diode featuring silicon-oxide passivated junctions. It provides a nominal Zener voltage of 9.1 V with a ±5% tolerance, operating within a range of 8.65 V to 9.56 V at a test current of 150 mA. The device exhibits a maximum dynamic impedance of 2 Ohms and a reverse leakage current of 7.5 µA at 6.9 V. It utilizes an axial lead Surmetic 40 package (Case 017AA) designed for through-hole mounting. The component supports a maximum steady-state power dissipation of 5 W and withstands surge currents up to 180 W for 8.3 ms pulses.

Feature Summary

• Utilizes silicon-oxide passivated junction technology for improved electrical characteristics and reliability.
• Features a void-free, transfer-molded plastic package providing corrosion resistance and environmental protection.
• Includes built-in strain relief and guarantees maximum limits on multiple electrical parameters.

Applications

• Voltage regulation in electronic circuits requiring stable reference voltages.
• Protection against voltage surges and transient spikes in power supplies.
• Clamping applications in signal processing and communication equipment.

Procurement Notes

Verify the specific ordering suffix when purchasing. The base part number 1N5346B typically denotes standard packaging, while suffixes such as 'G' indicate Pb-Free availability. Confirm package type and shipping format directly with the manufacturer or authorized distributors to ensure compliance with project requirements and regulatory standards.

Selection Notes

Select this component for applications requiring a 9.1 V reference with high power handling capabilities. Ensure the circuit design accounts for the thermal resistance and derating requirements above 25°C ambient temperature. Verify that the expected operating current remains within the specified maximum DC Zener current limits to maintain performance and prevent device damage.

Part Context

This device belongs to the 1N53 Series of 5 Watt Zener Voltage Regulators from onsemi. The series covers a wide voltage range from 3.3 V to 200 V, all sharing similar mechanical construction and passivation technologies. These regulators are designed for robust performance in demanding environments, offering consistent electrical characteristics across the product line.

Replacement Considerations

Direct substitutes include the 1N5346BRL and 1N5346BRLG variants from onsemi, which share identical electrical specifications but may differ in packaging format or RoHS compliance status.