1N2806A

Overview

The 1N2806A is a high-power Zener diode manufactured by Microchip Technology, designed for robust voltage regulation in demanding environments. It features an 8.2 V nominal Zener voltage with a ±10% tolerance and a maximum power dissipation of 50 W. The device utilizes a TO-204AD (TO-3) through-hole package, supporting operation across a wide temperature range from -65°C to +175°C. Key electrical characteristics include a maximum Zener impedance of 0.4 Ohms and a forward voltage of 1.5 V at 10 A. Reverse leakage current is specified at 50 µA when tested at 5.4 V.

Feature Summary

• Provides stable voltage regulation with high power handling capabilities up to 50 watts.
• Engineered for extreme thermal resilience, operating reliably from -65°C to +175°C.
• Features low dynamic impedance for precise voltage control under varying load conditions.

Applications

• High-power voltage regulation circuits
• Overvoltage protection systems
• Reference voltage sources in industrial equipment

Procurement Notes

Verify the specific qualification level required for your application, as this component series includes JAN, JANTX, and JANTXV variants alongside commercial versions. Confirm that the TO-204AD package matches your board layout and thermal management strategy. Ensure the 8.2 V specification aligns with your circuit design requirements before finalizing procurement.

Selection Notes

Select the 1N2806A when applications demand significant power dissipation and wide temperature stability. The TO-3 package offers superior thermal performance compared to smaller packages. Consider the ±10% tolerance and 0.4 Ohm impedance if tight regulation is critical. Evaluate the 50 W rating against peak and continuous load currents to ensure adequate safety margins.

Part Context

This component belongs to the 1N2804B through 1N2846B series of 50 Watt Zener diodes registered with JEDEC. These devices are qualified per MIL-PRF-19500/114 for military standards. The series covers a broad voltage range from 3.9 V to 200 V, providing standardized solutions for high-power regulation needs across various industries.

Replacement Considerations

Compatible substitutes within the same family include 1N2804B through 1N2846B and 1N4557B through 1N4564B, provided they match the 8.2 V requirement. Commercial equivalents may lack the MIL-PRF-19500/114 qualification found in JAN/JANTX versions. Verify pinout compatibility and thermal resistance specifications when cross-referencing other manufacturers' parts.