1N4461C

Single Zener Diodes Overview

The Microchip Technology 1N4461C is a silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 6.8V with a tight tolerance of ±2%. The device is rated for a maximum power dissipation of 1.5W and operates in a through-hole DO-204AL (DO-41) axial leaded package. Key electrical characteristics include a maximum reverse leakage current of 5µA at the rated voltage and a maximum forward voltage drop of 1.5V. The unit exhibits a dynamic impedance of 2.5 Ohms, ensuring stable voltage reference performance under varying load conditions.

Single Zener Diodes Feature Summary

• Provides precise voltage regulation with a 6.8V nominal breakdown voltage
• Capable of handling up to 1.5W of power dissipation in standard axial packages
• Maintains low leakage current for efficient standby operation
• Offers tight voltage tolerance for accurate circuit referencing

Single Zener Diodes Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection stages in power supplies
• Clamping applications in signal conditioning paths

Single Zener Diodes Procurement Notes

Verify the manufacturer marking on the component body to confirm Microchip Technology origin, as this part number is historically associated with multiple manufacturers. Ensure the DO-204AL package dimensions match your PCB footprint requirements. Confirm RoHS compliance status if environmental regulations apply to your specific assembly process. Cross-reference datasheet specifications against your design margins to ensure adequate thermal headroom for the 1.5W rating.

Single Zener Diodes Selection Notes

Select this component when a 6.8V reference point is required with high precision. The ±2% tolerance makes it suitable for applications where tighter tolerances than standard 5% or 10% Zeners are necessary. Consider the 1.5W power rating for designs involving significant current draw or elevated ambient temperatures. The axial leaded format facilitates easy integration into legacy or through-hole dominated board layouts without requiring specialized surface mount reflow profiles.

Single Zener Diodes Part Context

This device belongs to the standard 1N series of Zener diodes, widely used in discrete semiconductor applications. Microchip Technology acquired Atmel, which previously manufactured this part, ensuring continuity in supply chain for existing designs. The DO-41 package remains a common industry standard for general-purpose power diodes and regulators, offering robust mechanical stability and reliable solder joint integrity for industrial and commercial electronics.

Single Zener Diodes Replacement Considerations

Equivalent parts from other manufacturers may share the 1N4461C designation but can vary in tolerance or thermal characteristics. Verify that any substitute maintains the 6.8V nominal voltage and 1.5W power rating. Check for identical package dimensions to ensure physical compatibility. Some alternatives may offer wider tolerances; confirm that the replacement meets the specific accuracy requirements of the original design.