SG2823J-DESC

Overview

The SG2823J-DESC is a high-reliability Darlington transistor array manufactured by Microchip Technology. It integrates eight NPN Darlington pairs within a hermetic ceramic dual in-line package, designed for severe environment applications. The device features open collector outputs with a maximum collector-emitter voltage of 50 V and a maximum DC collector current of 500 mA per channel. It operates across an extended temperature range from -55°C to +125°C. The component includes internal suppression diodes for inductive load protection and offers input compatibility with DTL, TTL, PMOS, and CMOS logic families.

Feature Summary

• Integrates eight NPN Darlington pairs for medium-current driving capabilities
• Features internal clamping diodes to protect against inductive load transients
• Constructed in a hermetic ceramic package suitable for harsh environments
• Provides flexible input interfacing compatible with multiple logic standards

Applications

• Military systems requiring high reliability and radiation tolerance
• Aerospace control units operating in extreme thermal conditions
• Industrial automation drivers for relays and solenoids

Procurement Notes

Verify the specific ordering suffix and revision level directly with the manufacturer or authorized distributors before procurement. Confirm that the hermetic ceramic package meets the environmental sealing requirements for the intended deployment. Ensure that the supply chain source is authorized to prevent counterfeit components in critical safety applications.

Selection Notes

Select this component when designing circuits that require high voltage isolation and significant current gain for driving inductive loads. The integrated suppression diodes simplify circuit design by eliminating external flyback diodes. Consider the through-hole mounting style and ceramic package constraints during PCB layout and mechanical integration phases.

Part Context

This part belongs to the SG2800 series of high-voltage medium-current driver arrays. The series is characterized by its robust construction for military and aerospace use. It serves as a bridge between low-power logic signals and high-power actuators, offering a compact solution for multi-channel switching in constrained spaces.

Replacement Considerations

The SG2823J/DESC is listed as a similar part number in public records. Verify pinout compatibility and electrical specifications before substitution. Ensure the alternative maintains the same hermetic sealing and temperature rating.