S2025L

Overview

The S2025L is a single-phase, non-sensitive gate Silicon Controlled Rectifier (SCR) manufactured by Littelfuse under the Teccor brand. It is rated for a peak repetitive off-state voltage of 200V and an on-state RMS current of 25A. The device features a nominal circuit commutated turn-off time of 35 microseconds. It utilizes a TO-220 isolated tab package configuration, providing electrical isolation between the terminal and the mounting surface. This component serves as a half-wave, unidirectional, gate-controlled rectifier designed for robust phase control applications.

Feature Summary

• Non-sensitive gate triggering capability for reliable operation with standard trigger circuits
• Isolated tab package design ensuring electrical separation from heatsink or chassis
• Half-wave unidirectional rectification functionality for AC phase control
• Standard recovery characteristics suitable for general purpose switching

Applications

• Heating element control systems
• Motor speed control circuits
• Lighting dimmer applications

Procurement Notes

Verify component status carefully as the S2025L is listed as discontinued in official Littelfuse documentation. Confirm availability through authorized distributors or secondary market suppliers if immediate procurement is required. Ensure that any substitute components meet the original electrical specifications including voltage ratings, current handling, and package dimensions to maintain system integrity.

Selection Notes

Select this component for low-power phase control applications requiring 200V blocking capability and 25A continuous current handling. The TO-220 isolated tab package facilitates direct mounting to cooling structures without additional insulators. Consider the 35ms turn-off time when designing commutation circuits. Verify gate trigger current requirements against available drive signals to ensure proper activation.

Part Context

The S2025L belongs to the Littelfuse Teccor line of thyristor SCRs, specifically categorized within the Low Power SCR series supporting voltages up to 1200V. These devices are engineered as half-wave, unidirectional, gate-controlled rectifiers. The product family complements other Teccor offerings by providing standardized solutions for phase control tasks where moderate power levels and reliable switching are primary requirements.

Replacement Considerations

As the S2025L is marked as discontinued, identify equivalent parts from Littelfuse or other manufacturers that match the 200V/25A rating, TO-220 isolated tab package, and 35us turn-off time. Ensure the replacement maintains non-sensitive gate characteristics and identical pinout configuration for direct board compatibility.