1N3011B

Overview

The Microchip Technology 1N3011B is a silicon unidirectional voltage regulator diode designed for robust performance in demanding environments. It features a nominal Zener voltage of 150 V and a maximum power dissipation of 10 W. The device utilizes a DO-4 (DO-203AA) metal-glass hermetically sealed package, ensuring reliability under harsh conditions. It offers a tight tolerance of ±5% on the Zener voltage. This component is engineered for applications requiring stable voltage regulation with high thermal stability and long-term durability.

Feature Summary

• Hermetically sealed metal-glass construction ensures environmental protection and long-term reliability
• High power handling capability of 10 W supports demanding load requirements
• Tight voltage tolerance of ±5% provides precise regulation accuracy
• Unidirectional design simplifies circuit integration for standard voltage reference applications

Applications

• Military and aerospace electronic systems requiring radiation-hardened or high-reliability components
• Industrial control circuits needing stable voltage references under extreme temperatures
• Power supply regulation stages where high surge current handling is critical
• Protection circuits in communication equipment exposed to harsh environmental conditions

Procurement Notes

Verify the specific suffix 'B' indicates the ±5% tolerance variant when sourcing. Confirm the manufacturer origin, as Microsemi and Microchip share this lineage. Ensure the DO-4 leaded package matches your PCB footprint requirements. Check for RoHS compliance status if required by your assembly process. Validate that the hermetic seal integrity meets your environmental specifications.

Selection Notes

Select this component when high power dissipation and strict voltage tolerance are required. The DO-4 package suits through-hole mounting for high-power applications. Consider the hermetic seal for environments with moisture or corrosive agents. Compare against lower-power variants if system constraints allow reduced wattage. Ensure the 150 V rating aligns with the target regulation voltage in the design.

Part Context

The 1N3011B belongs to the JANTX1N3011 series, originally developed for military specifications. Microchip Technology continues production following its acquisition of Microsemi's discrete and sensor products. This series represents a legacy but highly reliable line of high-power Zener diodes. The part number structure distinguishes it from standard commercial equivalents by its enhanced quality and testing protocols.

Replacement Considerations

Direct substitutes include JANTX1N3011A and JANTX1N3011R, which share identical electrical characteristics. Verify package compatibility before substitution. Cross-reference with other manufacturers offering DO-4 hermetic packages if availability is constrained. Ensure replacement parts meet the same MIL-spec or equivalent reliability standards.