1N5348B

Overview

The Diotec Semiconductor 1N5348B is a non-planar silicon Zener diode housed in a DO-201 axial through-hole package. It provides a nominal Zener voltage of 11 V with a standard tolerance of ±5%. The device supports a maximum power dissipation of 5 W at 50°C and operates within a junction temperature range of -50°C to +150°C. Key electrical characteristics include a dynamic resistance of 2.5 Ω, a test current of 125 mA, and a maximum reverse leakage current of 5 µA at 8.4 V.

Feature Summary

• High power dissipation capability for robust thermal performance
• Non-planar technology construction for reliable voltage regulation
• Compliant with RoHS directives and REACH regulations

Applications

• Voltage stabilization circuits
• General-purpose voltage regulators
• Overvoltage protection applications

Procurement Notes

Verify the specific manufacturer lot code and datasheet revision before integration. Confirm that the component meets the required AEC-Q101 standards if automotive grade compliance is necessary, as standard versions are commercial/industrial grade. Ensure lead lengths are maintained at least 10 mm from the case during soldering to preserve rated power dissipation values.

Selection Notes

Select this component when an 11 V reference point is required in high-power through-hole designs. The 5 W rating allows for significant current handling compared to lower-power surface-mount alternatives. Verify that the ±5% tolerance aligns with circuit precision requirements, as tighter tolerances may require custom ordering or different series parts.

Part Context

This part belongs to the 1N5345B through 1N5388B series of flächendiffundierte (area-diffused) Zener diodes. The series covers a wide voltage range from 8.7 V to 200 V, all sharing the same 5 W power dissipation and DO-201 package form factor. This specific model represents the 11 V step within the E24 standard grading sequence.

Replacement Considerations

Cross-reference with other manufacturers' 1N5348B equivalents. Verify pinout compatibility and ensure the replacement part meets the 5 W power dissipation and 11 V Zener voltage specifications.