1N5346B

Overview

The Diotec Semiconductor 1N5346B is a non-planar silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 9.1 V with a standard tolerance of ±5%. The device operates within a maximum power dissipation of 5 W at an ambient temperature of 50°C and supports a peak non-repetitive surge power of 80 W. It utilizes the DO-201 axial leaded package, offering a typical dynamic resistance of 2 Ohms and a reverse leakage current of 7.5 µA at 6.9 V.

Feature Summary

• High power dissipation capability up to 5 W
• Glass passivated junction for enhanced reliability
• Compliant with RoHS directives and REACH regulations

Applications

• Voltage stabilization circuits
• General purpose voltage regulators
• Overvoltage protection systems

Procurement Notes

Verify that the ordered component matches the exact manufacturer part number 1N5346B from Diotec Semiconductor. Confirm compliance requirements such as RoHS status and specific packaging formats like ammo packs. Ensure design parameters align with the official datasheet specifications regarding thermal resistance and operating temperatures before finalizing procurement.

Selection Notes

Select this component when a stable 9.1 V reference or regulation point is required in through-hole designs. Consider its 5 W power rating and low dynamic impedance for robust performance in linear regulator stages. Evaluate thermal management needs based on the specified junction-to-ambient thermal resistance to ensure reliable operation under continuous load conditions.

Part Context

This component belongs to the 1N5345B through 1N5388B series of 5 W Zener diodes manufactured by Diotec Semiconductor. The series provides a wide range of standardized voltage options from 8.7 V to 200 V. All devices in this family share identical mechanical dimensions, package types, and general electrical characteristics, differing primarily in their specific Zener voltage ratings.

Replacement Considerations

Cross-reference with other manufacturers' 1N5346 equivalents. Verify that substitute parts maintain the same 9.1 V nominal voltage, ±5% tolerance, 5 W power rating, and DO-201 package footprint to ensure direct compatibility without circuit redesign.

FAQ

What is the standard voltage tolerance for the 1N5346B?

The standard voltage tolerance is graded according to the international E24 standard, which corresponds to ±5%.

Is the 1N5346B suitable for automotive applications?

Standard versions are for commercial/industrial use. Automotive-grade variants are available with suffixes -Q (AEC-Q101 compliant) or -AQ (in qualification).