1N485B

Overview

The onsemi 1N485B is a switching diode featuring metallurgically bonded double plug construction within a hermetically sealed DO-7 package. It supports an operating temperature range of -65°C to +175°C and withstands a surge current of 2A at 8.3ms. The component is available in JAN, JANTX, and JANTXV grades per MIL-PRF-19500/118 specifications.

Feature Summary

• Metallurgically bonded double plug construction for enhanced reliability
• Hermetically sealed glass package design
• Qualified under MIL-PRF-19500/118 standards

Applications

• Military aerospace systems requiring hermetic sealing
• High-temperature industrial environments
• Harsh condition electronic circuits

Procurement Notes

Verify the specific grade (JAN, JANTX, or JANTXV) required for your application, as these denote different quality levels under MIL-PRF-19500/118. Confirm that the DO-7 package and hermetic seal meet environmental constraints. Ensure compatibility with high-temperature operation up to 175°C during system integration.

Selection Notes

Select this component when hermetic sealing and high-temperature stability are critical. The metallurgical bond provides robustness against mechanical stress. Consider the available qualification grades based on mission requirements. Verify that the single-diode configuration fits the circuit topology.

Part Context

This part belongs to the 1N485 series of general-purpose switching diodes manufactured by onsemi. It shares the same physical construction and basic electrical characteristics as the 1N485 and 1N485A variants, differentiated primarily by qualification standards and testing rigor defined by military specifications.

Replacement Considerations

Direct substitutes include other hermetically sealed DO-7 switching diodes meeting MIL-PRF-19500/118. Verify pinout and thermal resistance match. Non-hermetic alternatives require re-evaluation of environmental protection strategies.