ULS2801R-883

Overview

The ULS2801R-883 is a bipolar junction transistor (BJT) array manufactured by Allegro MicroSystems. It contains eight NPN Darlington composite transistors housed in an 18-CERDIP package. The device supports a maximum collector current of 600mA and operates with a voltage rating of 50V. It delivers a power dissipation capacity of 1W. The component is designed for through-hole mounting and functions within an operating temperature range of -55°C to 125°C.

Feature Summary

• Integrates eight NPN Darlington pairs into a single compact unit
• Provides high current gain characteristics suitable for switching applications
• Supports through-hole mounting via ceramic dual-in-line packaging

Applications

• Industrial control systems requiring multiple switching stages
• Power distribution networks utilizing Darlington configurations
• Automotive electronics compatible with extended temperature ranges

Procurement Notes

Verify RoHS compliance status as the component is listed as non-compliant in available records. Confirm package dimensions against the 18-CDIP specification. Ensure thermal management aligns with the 1W power dissipation limit during operation.

Selection Notes

Select this component when multiple independent NPN switching channels are required in a single footprint. Consider the 600mA current limit and 50V voltage rating for circuit design. Evaluate the through-hole requirement against PCB layout constraints.

Part Context

This part belongs to the ULS2801 series of bipolar transistor arrays. It serves as a discrete semiconductor solution for integrating multiple Darlington pairs without separate component placement. The ceramic DIP package offers robustness for harsh environments compared to plastic variants.

Replacement Considerations

Check for direct pin-compatible alternatives within the same series. Verify that substitute parts meet the 600mA current and 50V voltage specifications. Ensure the replacement maintains the 18-pin ceramic DIP form factor.