1N5355B

Overview

The Diotec Semiconductor 1N5355B is a non-planar silicon Zener diode rated for 5 W power dissipation and an 18 V nominal Zener voltage. It features a ±5% tolerance, 2.5 Ω dynamic resistance at the test current of 65 mA, and a maximum reverse leakage current of 0.5 μA at 13.7 V. The component operates within a junction temperature range of -50°C to +150°C and utilizes a DO-201 axial leaded package.

Feature Summary

• High peak reverse power dissipation capability up to 5 W
• Non-planar technology construction for high reliability
• Standardized E24 voltage grading with ±5% tolerance

Applications

• Voltage stabilization circuits
• Voltage regulators
• Overvoltage protection

Procurement Notes

Verify that the ordered part number matches the exact 1N5355B designation to ensure correct 18 V Zener voltage and 5 W power rating specifications. Confirm compliance requirements such as RoHS status and AEC-Q101 automotive qualification if applicable to your specific design constraints before finalizing procurement.

Selection Notes

Select this component when a standard commercial or industrial grade Zener diode is required for general-purpose voltage regulation. Ensure adequate heat sinking is provided to maintain the junction temperature within the specified limits during continuous operation at full power dissipation.

Part Context

This device belongs to the 1N5345B through 1N5388B series of JEDEC registered axial-leaded Zener diodes. The series provides a wide selection of voltages ranging from 8.7 V to 200 V, all sharing the same 5 W power dissipation rating and DO-201 package outline for standardized mounting.

Replacement Considerations

Cross-reference with other manufacturers' 1N5355B equivalents. Verify that substitute parts match the 18 V nominal voltage, 5 W power rating, and DO-201 package dimensions to ensure mechanical and electrical compatibility.