1N5349B

Overview

The Diotec Semiconductor 1N5349B is a non-planar Zener diode designed for commercial and industrial applications. It features a nominal Zener voltage of 12 V with a standard tolerance of ±5%. The device provides a maximum power dissipation of 5 W at an ambient temperature of 50°C, utilizing the DO-201 axial through-hole package. Key electrical characteristics include a test current of 100 mA, a dynamic resistance of 2.5 Ohms, and a reverse leakage current of 2 µA at 9.1 V. It operates within a junction temperature range of -50°C to +150°C.

Feature Summary

• High power dissipation capability up to 5 W
• Non-planar technology construction
• Compliant with RoHS directives

Applications

• Voltage stabilization circuits
• Voltage regulators
• Overvoltage protection

Procurement Notes

Verify that the specific part number matches the required voltage tolerance and package type. Confirm compliance requirements such as REACH or conflict minerals if applicable to your supply chain standards. Ensure the ordering suffix aligns with the desired packaging format, such as the standard ammo pack configuration.

Selection Notes

Select this component when a robust 5 W Zener diode is needed for general-purpose regulation. Consider the thermal resistance values and ensure adequate heat sinking or lead length management to maintain performance within the specified operating temperature range under continuous load conditions.

Part Context

This component belongs to the 1N5345B through 1N5388B series from Diotec Semiconductor. The series utilizes non-planar technology and offers a wide range of Zener voltages from 8.7 V to 200 V. All devices in this family share similar mechanical data and are housed in the DO-201 case outline.

Replacement Considerations

Cross-reference with other manufacturers offering the 1N5349B specification. Verify that any substitute maintains the same 12 V nominal voltage, 5 W power rating, and DO-201 package dimensions to ensure physical and electrical compatibility.