SG2003L

Overview

The SG2003L is a high-voltage medium current driver array manufactured by Microchip Technology, formerly Microsemi. It integrates seven NPN Darlington pairs with internal suppression diodes to drive inductive loads such as lamps, relays, and solenoids. The device features open collector outputs capable of handling collector currents up to 600mA and output voltages ranging from 50V to 95V. It supports DTL, TTL, PMOS, or CMOS compatible inputs and operates within an ambient temperature range of -55°C to 125°C. The component is available in hermetic ceramic packages designed for severe military, aerospace, and industrial environments.

Feature Summary

• Integrates seven NPN Darlington pairs with internal clamping diodes for inductive load protection
• Supports multiple input logic standards including DTL, TTL, PMOS, and CMOS
• Provides high voltage breakdown capabilities combined with significant current carrying capacity
• Available in hermetic ceramic packaging suitable for harsh environmental conditions

Applications

• Military systems requiring high reliability and radiation tolerance
• Aerospace control units operating in extreme temperature ranges
• Industrial automation equipment driving heavy inductive loads
• Solenoid and relay driver circuits in severe environment applications

Procurement Notes

Verify the specific package variant, as the SG2003 series includes both ceramic dual in-line and leadless chip carrier options. Confirm that the selected part meets the required MIL-STD-883 or DESC SMD standards if hermeticity is necessary. Check for availability of LMI level processing or specific radiation data if the application demands high-reliability certifications beyond standard commercial specifications.

Selection Notes

Select the SG2003L when designing circuits that require driving multiple high-current inductive loads from low-power logic signals. Ensure the input interface matches the available logic family, as the device accepts DTL, TTL, PMOS, or CMOS inputs. Consider the thermal management requirements for the chosen package type, particularly for the ceramic variants intended for extended temperature operation up to 125°C.

Part Context

The SG2003 belongs to the SG2000 series of driver arrays produced by Microsemi, now part of Microchip Technology. This series is engineered for robust performance in demanding sectors such as defense and space exploration. The L suffix typically denotes a specific package or qualification tier within the broader SG2000 family, distinguishing it from plastic commercial versions limited to lower temperature ranges.

Replacement Considerations

Direct replacements must match the seven-channel Darlington configuration and similar voltage/current ratings. Verify compatibility with existing PCB footprints, specifically comparing the 16-pin ceramic DIP against other package options like the 20-pin LCC. Ensure any substitute maintains the required hermetic seal and radiation hardness levels if used in qualified military or aerospace assemblies.