S4065JTP

Overview

The Littelfuse S4065JTP is a silicon-controlled rectifier (SCR) from the Teccor Sxx65x series, designed for high-current switching applications. It features a TO-218 (SMTO-218) through-hole package with three pins. Key electrical parameters include a rated repetitive off-state voltage (VDRM) of 400 V and an RMS on-state current (ItRMS) of 65 A. The device has a maximum non-repetitive peak surge current of 950 A and a holding current (Ih) of up to 80 mA. Gate triggering requirements are specified as a maximum gate trigger current (Igt) of 50 mA and a gate trigger voltage (Vgt) of 2 V. The forward voltage drop (Vf) is 1.8 V, with an off-state leakage current of 20 uA at VDRM. Operating temperatures range from -40°C to +125°C.

Feature Summary

• High current handling capability with 65 A RMS rating in a standard through-hole package
• Sensitive gate design allowing direct interfacing with low-power control circuits
• Robust surge withstand capacity suitable for demanding power switching environments

Applications

• Strobe light control circuits
• Fluid level sensing systems
• Capacitive-discharge ignition systems
• Solenoid control in ground fault circuit interrupters

Procurement Notes

Verify the specific suffix JTP against official Littelfuse documentation to confirm pinout orientation and thermal characteristics. Ensure the procurement channel provides valid RoHS compliance declarations. Cross-reference the manufacturer part number with authorized distributor catalogs to avoid counterfeit components. Confirm that the TO-218 package dimensions match your PCB footprint requirements before finalizing orders.

Selection Notes

Select this component when a 400 V blocking voltage and 65 A continuous current capacity are required in a through-hole configuration. The sensitive gate specification (50 mA max) facilitates drive from microprocessors or logic gates without additional amplification. Consider the 950 A surge rating for applications involving high inrush currents. Evaluate thermal management needs given the 65 A RMS rating and 1.8 V forward voltage drop in the SMTO-218 package.

Part Context

The S4065JTP belongs to the Littelfuse Teccor Sxx65x family of SCRs. This series is engineered for efficient switching in power control applications. The devices utilize glass passivated junctions for durability and are compatible with lead-free reflow soldering processes. The S4065JTP specifically targets applications requiring moderate voltage blocking with high current throughput in a cost-effective discrete form factor.

Replacement Considerations

Consult Littelfuse official substitution guides for verified equivalents. Generic SCR replacements must match the 400 V VDRM, 65 A ItRMS, and TO-218 package constraints. Verify gate sensitivity and surge ratings to ensure functional compatibility in existing circuit designs.