1N5369B

Overview

The Diotec Semiconductor 1N5369B is a non-planar Zener diode housed in a DO-201 axial leaded package. It features a nominal Zener voltage of 51 V with a standard E24 tolerance of approximately ±5%. The device supports a maximum power dissipation of 5 W at 50°C ambient temperature and withstands non-repetitive peak pulse power of 80 W for durations under 8.3 ms. Operating junction temperatures range from -50°C to +150°C, with storage limits extending to +175°C. Key electrical characteristics include a test current of 25 mA, dynamic resistance of 27 Ω, and a reverse leakage current of less than 38.8 µA at 230 V reverse voltage.

Feature Summary

• High power dissipation capability up to 5 W utilizing non-planar technology
• Voltage stabilization and regulation functionality within a wide Zener voltage range
• Compliance with RoHS directives (excluding exemption 7a-I) and REACH regulations

Applications

• Voltage stabilization circuits
• Linear voltage regulators
• Overvoltage protection applications

Procurement Notes

Verify the specific ordering suffix when purchasing. Standard versions lack automotive qualification, while suffixes such as -Q indicate AEC-Q101 compliance and -AQ denotes active qualification status. Confirm that the required component matches the intended reliability grade for your specific commercial or industrial application environment before finalizing orders.

Selection Notes

Select this component for designs requiring robust 5 W power handling in an axial package. Ensure the circuit operates within the specified thermal constraints, maintaining leads at ambient temperature at a 10 mm distance from the case for accurate rating validation. Consider the dynamic resistance and test current requirements to ensure proper regulation performance in your specific load conditions.

Part Context

This component belongs to the 1N5345B through 1N5388B series of Zener diodes manufactured by Diotec Semiconductor. The series utilizes flächendiffundierte (planar diffused) non-planar technology to achieve high power ratings. The 1N5369B specifically occupies the mid-range of the series, offering a 51 V breakdown voltage suitable for general-purpose industrial voltage reference and protection tasks.

Replacement Considerations

Cross-reference with other manufacturers' 1N5369 equivalents. Verify that substitute components match the DO-201 package dimensions, 5 W power rating, and 51 V Zener voltage tolerance. Ensure thermal resistance characteristics are compatible with your existing heat dissipation design.