S2004VS2

Overview

The Littelfuse S2004VS2 is a half-wave unidirectional sensitive SCR (Silicon Controlled Rectifier) designed for gate-controlled rectification. It features a non-isolated TO-251 (V-Pak) package and supports a maximum on-state current of 4 A with a repetitive peak off-state voltage rating of 200 V. The device has a DC gate trigger current of 200 µA, a peak on-state voltage of 1.6 V, and a peak one-cycle forward surge current capability of 80 A. It utilizes glass-passivated junctions for parameter stability and operates within a temperature range of -40 °C to +110 °C.

Feature Summary

• Glass-passivated chip construction ensures long-term device reliability and protection against junction contamination.
• Half-wave unidirectional design provides efficient gate-controlled rectification for AC circuits.
• Compact surface-mount V-Pak package facilitates automated assembly and space-saving PCB layouts.

Applications

• AC power control circuits requiring low gate drive currents
• Lighting dimmer applications
• Solid-state relay inputs

Procurement Notes

Verify the specific suffix 'VS2' corresponds to the non-isolated TO-251 package variant during sourcing. Confirm that the 200 V voltage rating aligns with circuit requirements, as other variants in this series offer higher blocking voltages. Ensure the supplier provides documentation confirming RoHS compliance and adherence to the manufacturer's electrical isolation standards for this specific package type.

Selection Notes

Select the S2004VS2 when a 200 V blocking voltage and 4 A continuous current are sufficient for the load. This part is suitable for applications requiring moderate gate sensitivity (200 µA). For higher voltage ratings, consider the S4004 or S6004 series. Verify thermal management needs based on the RMS current derating curves provided in the datasheet to ensure operation within the specified case temperature limits.

Part Context

This component belongs to the Teccor line of sensitive SCRs, which complements the manufacturer's broader power SCR portfolio. The product family includes various packages such as TO-92, TO-202, and Compak, catering to different power and size constraints. The S2004VS2 specifically addresses the need for compact, surface-mount solutions in mid-range current applications.

Replacement Considerations

Direct replacements include other S2004 series variants if voltage ratings differ, such as S2004DS1 or S2004DS2. Cross-package equivalents like the T106B1 or EC103B may be considered if leaded packaging is acceptable, though pinouts and thermal characteristics must be verified.

FAQ

What is the difference between the S2004VS2 and S2004DS2?

The primary difference is the package type. The S2004VS2 uses the non-isolated TO-251 (V-Pak) package, while the S2004DS2 uses the TO-252 (D-Pak) package. Both share the same electrical specifications regarding current and voltage ratings.

Is the S2004VS2 electrically isolated?

No, the S2004VS2 is a non-isolated device. Electrically isolated versions in this series typically carry an 'L' or 'F' suffix in their part number designation.

What is the maximum gate trigger current for this device?

The DC gate trigger current (IGT) is specified at a maximum of 200 µA under standard test conditions (VD = 6 V dc, RL = 100 Ω).