STMicroelectronics

TS420-600T

TS420-600T Description

The TS420-600T from STMicroelectronics is a 600V, 4A (RMS) sensitive gate silicon-controlled rectifier (SCR) designed for high-reliability switching applications. Packaged in a TO-220AB through-hole mount, this ROHS3 Compliant and REACH Unaffected device offers robust performance with low gate triggering requirements, making it ideal for precision control circuits. Its 5 µA max off-state leakage current and 1.6V max on-state voltage (Vtm) ensure efficient power handling with minimal losses. The SCR is rated for 30A/33A non-repetitive surge current (Itsm), providing resilience against transient overloads.

TS420-600T Features

• Low Trigger Requirements: 200 µA max gate trigger current (Igt) and 800 mV max gate trigger voltage (Vgt) enable easy drive with low-power logic circuits.
• High Voltage Handling: 600V off-state voltage rating suits medium/high-voltage AC/DC applications.
• Optimized Thermal Performance: TO-220AB package ensures effective heat dissipation for sustained 2.5A avg (It(AV)) current.
• Reliable Surge Protection: 30A (50Hz)/33A (60Hz) surge capability safeguards against inrush currents.
• Industry-Standard Compliance: EAR99, ROHS3, and REACH Unaffected status ensures global usability.

TS420-600T Applications

• AC/DC Power Control: Ideal for motor drives, dimmers, and industrial heaters due to its high voltage tolerance and surge resilience.
• Protection Circuits: Used in crowbar circuits, overvoltage protection, and relay replacements.
• Low-Power Triggers: Suits battery-operated or logic-level systems (e.g., IoT devices) with its sensitive gate design.
• Automotive & Industrial: Compliant with harsh-environment demands, including welding equipment and power supplies.

Conclusion of TS420-600T

The TS420-600T stands out for its low triggering energy, high surge tolerance, and robust TO-220AB packaging, making it a versatile choice for designers needing reliable SCR performance in compact, cost-effective solutions. Its balance of 600V blocking capability and 4A RMS current positions it as a superior alternative to generic SCRs in precision power control and protection systems.