1N3043B-1

Single Zener Diodes Overview

The Microchip Technology 1N3043B-1 is a silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 91V with a tolerance of ±20%. The device operates in the unidirectional configuration and is housed in a hermetically sealed glass DO-41 axial leaded package. It supports a maximum DC power dissipation of 1W at a case temperature of +95°C, with derating required above this threshold. The component is qualified to MIL-PRF-19500/115 standards.

Single Zener Diodes Feature Summary

• Hermetically sealed construction using metallurgically bonded glass encapsulation
• Qualified to MIL-PRF-19500/115 military reliability standards
• Capable of operating within an extended temperature range from -65°C to +175°C

Single Zener Diodes Applications

• Military aerospace voltage reference circuits
• High-reliability industrial power supply regulation
• Harsh environment protection systems

Single Zener Diodes Procurement Notes

Verify that the specific order includes the suffix indicating compliance with MIL-PRF-19500/115 specifications. Confirm the package type matches the required DO-41 form factor. Ensure the manufacturer documentation explicitly lists the 1N3043B-1 designation to guarantee the correct voltage tolerance and qualification level are provided.

Single Zener Diodes Selection Notes

Select this component when a 91V reference is required in a ruggedized, hermetically sealed package. The DO-41 axial lead format facilitates through-hole mounting on standard PCBs or chassis. Consider the thermal derating requirements if ambient temperatures exceed +95°C to maintain the 1W power rating safely.

Single Zener Diodes Part Context

This part belongs to the 1N3016B-1 through 1N3045B-1 series of 1-watt Zener diodes manufactured by Microchip Technology. The series provides various voltage options within the same physical footprint and qualification class, allowing for design flexibility while maintaining consistent mechanical and environmental performance characteristics across the product line.

Single Zener Diodes Replacement Considerations

Equivalent parts include JANTXV1N3043B-1 and CDLL3043B (MELF package). Verify pinout compatibility and ensure the replacement meets the same MIL-PRF-19500/115 qualification requirements for critical applications.