SG2803L-DESC

Overview

The SG2803L-DESC is a high-reliability Darlington transistor array manufactured by Microchip Technology. It integrates eight NPN Darlington pairs within a single package, designed for driving lamps, relays, and solenoids in severe environments. The device features open collector outputs with a minimum breakdown voltage of 50V and supports a maximum DC collector current of 500mA per channel. It operates across an ambient temperature range from -55°C to +125°C. The component is housed in a hermetic 20-pin leadless chip carrier (CLCC) package suitable for surface mount installation.

Feature Summary

• Integrates eight NPN Darlington pairs with internal suppression diodes for inductive load protection
• Features open collector outputs capable of handling medium current loads up to 500mA
• Compatible with DTL, TTL, PMOS, or CMOS drive signal inputs
• Constructed in a hermetic ceramic package for high reliability in military and aerospace applications

Applications

• Driving lamps in military and aerospace systems
• Actuating relays in industrial control equipment
• Powering solenoids in severe environment applications

Procurement Notes

Verify the specific suffix requirements for your design, as the DESC suffix typically denotes a specific procurement or quality standard distinct from the standard commercial variant. Confirm that the CLCC-20 package footprint matches your PCB layout constraints. Ensure that the hermetic sealing meets the environmental specifications required for your target application before finalizing the order.

Selection Notes

Select this component when high reliability and radiation hardness are critical, such as in aerospace or defense projects. The SG2803L-DESC is appropriate for designs requiring interface compatibility with multiple logic families including TTL and CMOS. Consider the thermal management capabilities of the ceramic package if operating near the upper temperature limit of 125°C.

Part Context

This part belongs to the SG2800 series of high-voltage medium-current driver arrays. The series includes variants like the SG2803J, which uses an 18-pin dual in-line ceramic package, whereas the SG2803L-DESC utilizes a 20-pin leadless chip carrier. All variants share the core functionality of integrating Darlington pairs for robust switching applications in demanding environments.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Microchip Technology directly for qualified alternatives or cross-reference options that meet the same hermetic and electrical specifications.