SJ4012N1RP

Scrs Overview

The Littelfuse SJ4012N1RP is a Silicon Controlled Rectifier (SCR) from the SJxx20xx series, designed for surface mount applications in the D2PAK-2 package. It features a rated repetitive off-state voltage of 400 V and an on-state RMS current of 12 A. The device operates within a temperature range of -40°C to +150°C. Key electrical parameters include a gate trigger voltage of 1.5 V, a gate trigger current of 6 mA, and a maximum holding current of 15 mA. Non-repetitive peak on-state current is rated at 300 A, with a low off-state leakage current of 10 µA.

Scrs Feature Summary

• High thermal stability supporting operation up to 150°C
• Robust surge handling capability for transient protection
• Low gate drive requirements for efficient triggering

Scrs Applications

• Industrial motor control circuits
• Solid-state relay designs
• Power supply overcurrent protection

Scrs Procurement Notes

Verify the specific Littelfuse datasheet for the SJ4012N1RP to confirm exact pinout configurations and thermal resistance values before finalizing the design. Ensure that the ordering suffix matches the required reel packaging specifications. Cross-reference the component marking against official manufacturer documentation to prevent counterfeit parts during procurement.

Scrs Selection Notes

Select this SCR when a 400V rating and 12A continuous current are required in a compact SMD form factor. Compare the 150°C junction temperature limit against alternative TO-220 packages if higher thermal dissipation is needed. Evaluate the 6 mA gate trigger current against available driver capabilities to ensure reliable turn-on under all operating conditions.

Scrs Part Context

This component belongs to the SJxx20xx series of high-temperature SCRs manufactured by Littelfuse. These devices are engineered for robust performance in demanding power electronics environments. The series offers a balance of high voltage blocking and moderate current handling in surface-mount packages suitable for automated assembly processes.

Scrs Replacement Considerations

Consult Littelfuse official substitution guides for verified equivalents. Potential alternatives may include other 400V 12A SCRs in D2PAK packages from the same manufacturer family, provided pinouts and thermal characteristics match exactly.