SJ4040N2ARP

Overview

The SJ4040N2ARP is a Silicon Controlled Rectifier (SCR) from Littelfuse, designed for surface mount applications in the TO-263 (D2PAK) package. It features a rated repetitive off-state voltage of 400 V and an on-state RMS current of 40 A. The device supports a non-repetitive peak on-state current of 520 A and operates within a junction temperature range of -40°C to +150°C. Key electrical characteristics include a gate trigger voltage of 1.5 V, a gate trigger current of 40 mA, and a maximum holding current of 60 mA. The component exhibits a forward voltage drop of 1.8 V and a low off-state leakage current of 10 uA at rated voltage.

Feature Summary

• High thermal performance with extended operating temperature range up to 150°C
• Surface mount construction in D2PAK package for automated assembly
• Standard recovery thyristor characteristics for reliable switching
• Low gate sensitivity with defined trigger parameters

Applications

• Industrial motor control systems
• Power supply circuits requiring high current handling
• AC power regulation and control applications

Procurement Notes

Verify the specific ordering suffix and manufacturer part number against official Littelfuse documentation to ensure correct component identification. Confirm that the received device matches the specified TO-263 package and electrical ratings. Check for any recent product change notices or obsolescence announcements directly from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when a surface mount SCR with 400V blocking capability and 40A continuous current rating is required. The TO-263 package provides suitable thermal dissipation for moderate power applications. Ensure the design accounts for the 1.5V gate trigger requirement and the 150°C maximum junction temperature limit during thermal management planning.

Part Context

This device belongs to Littelfuse's standard SCR family, offering robust performance in power electronics. The SJ4040N2ARP variant specifically targets applications needing reliable AC switching in a compact surface mount form factor. It complements through-hole options by providing equivalent electrical specifications in a PCB-mountable package suitable for modern manufacturing processes.

Replacement Considerations

Consult Littelfuse official documentation for verified cross-reference part numbers. Direct replacements must match the 400V voltage rating, 40A current capacity, and TO-263 package dimensions. Verify compatibility with existing gate drive circuitry and thermal design constraints before substitution.