S2010LS3

Overview

The Littelfuse S2010LS3 is a sensitive silicon-controlled rectifier (SCR) designed for half-wave unidirectional gate-controlled rectification. It features a TO-220 isolated package with an electrically isolated mounting tab, enabling safe integration into low-cost assembly configurations. The device supports a maximum on-state current of 10 A and offers a repetitive peak off-state voltage rating of 200 V. It exhibits high gate sensitivity with a DC gate trigger current of 500 µA at 25 °C. Key electrical parameters include a peak on-state voltage of 1.6 V, a surge current capability of 100 A, and thermal resistance from junction to case of 3.4 °C/W. The component operates within a temperature range of -40 °C to +110 °C.

Feature Summary

• Electrically isolated TO-220 package allows direct mounting to heatsinks without external insulators
• Glass-passivated junctions provide long-term reliability and protection against contamination
• High surge current capability supports robust performance in demanding transient conditions
• Sensitive gate control enables efficient triggering with minimal drive power requirements

Applications

• AC power control circuits requiring isolation
• Lighting dimmer applications
• Motor speed control systems
• Solid-state relay inputs

Procurement Notes

Verify the specific ordering suffix matches the required voltage and gate sensitivity ratings. Confirm that the isolated TO-220 package variant is selected for designs requiring tab isolation. Ensure compliance with RoHS standards if applicable to the manufacturing process. Cross-reference the datasheet revision date to confirm parameter stability.

Selection Notes

Select this component when a 10 A SCR with high gate sensitivity is required in an isolated package. The 200 V rating suits lower voltage AC applications. Consider the thermal resistance and derating curves for continuous operation. Verify that the 500 µA gate trigger current aligns with the available drive circuit capabilities.

Part Context

This part belongs to the Teccor line of sensitive SCRs manufactured by Littelfuse. It complements the broader portfolio of power SCRs by offering specialized low-power gate control options. The product line includes various packages such as TO-92, Compak, and D-Pak, catering to different space and isolation requirements across consumer and industrial electronics.

Replacement Considerations

Direct substitutes may include other 10 A sensitive SCRs in isolated TO-220 packages with comparable 200 V ratings and 500 µA gate sensitivity. Verify pinout compatibility and thermal characteristics before substitution.

FAQ

What is the maximum repetitive peak off-state voltage for the S2010LS3?

The maximum repetitive peak off-state forward and reverse voltage (VDRM & VRRM) is 200 V.

Is the mounting tab electrically isolated in this package?

Yes, the TO-220 package is electrically isolated, allowing the case or tab to be connected to a heatsink without shorting the device terminals.

What is the typical thermal resistance from junction to case?

The typical thermal resistance (RθJC) for the 10 A TO-220 device is 3.4 °C/W.