1N1128A

Single Diodes Overview

The Microchip Technology 1N1128A is a high-reliability power rectifier qualified per MIL-PRF-19500/260. It features a glass passivated die and glass-to-metal seal construction within a DO-203AA (DO-4) stud mount package. The device supports a peak repetitive reverse voltage of 600 V and an average forward current of 3.3 A at 150°C case temperature. It withstands a peak surge forward current of 25 A and operates with a junction-to-case thermal resistance of 2.0 °C/W across a case temperature range of -65°C to 150°C.

Single Diodes Feature Summary

• Qualified for high reliability applications under MIL-PRF-19500/260 standards
• Constructed with a glass passivated die and glass-to-metal seal
• Designed for stud mounting in the DO-203AA (DO-4) package

Single Diodes Applications

• Military electronic systems requiring high reliability
• High voltage power rectification circuits
• Industrial equipment operating in extreme temperatures

Single Diodes Procurement Notes

Verify that the specific part number matches the required military qualification standard. Confirm the package type corresponds to the DO-203AA form factor. Ensure the voltage rating aligns with the system's maximum reverse voltage requirements before procurement.

Single Diodes Selection Notes

Select this component when a ruggedized, hermetically sealed rectifier is necessary for harsh environments. The glass-to-metal seal provides superior environmental protection compared to standard plastic packages. Consider the thermal resistance and case temperature limits for heat dissipation planning.

Single Diodes Part Context

This device belongs to a series of high-reliability power rectifiers manufactured by Microchip Technology. It shares the same physical package and general construction principles as other variants in the family, differentiated primarily by their peak repetitive reverse voltage ratings.

Single Diodes Replacement Considerations

Compatible replacements include the 1N1128RA variant, which shares identical electrical characteristics and package dimensions. Verify that any substitute meets the same MIL-PRF-19500/260 qualification requirements.