S2004DS2RP

Scrs Overview

The Littelfuse S2004DS2RP is a sensitive silicon-controlled rectifier (SCR) with a 4 A on-state current rating and a 400 V repetitive peak off-state voltage. It features a 200 µA DC gate trigger current, enabling high sensitivity for low-power control applications. The device utilizes an electrically isolated TO-220 package, providing 2500 V rms isolation between the leads and the mounting tab. Key electrical parameters include a maximum non-repetitive surge current of 50 A at 60 Hz, a typical peak on-state voltage of 1.6 V, and a holding current of 8 mA. The component operates within a junction temperature range of -40 °C to +110 °C.

Scrs Feature Summary

• Electrically isolated TO-220 package allows safe mounting to heatsinks without external insulators
• High gate sensitivity reduces required drive power for triggering
• Glass-passivated junctions provide long-term reliability and parameter stability

Scrs Applications

• AC phase control circuits
• Solid-state relay inputs
• Motor speed control systems

Scrs Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm package type and isolation ratings. Ensure the selected variant matches the required thermal management specifications for the intended operating environment. Confirm RoHS compliance status if restricted substances are a project constraint.

Scrs Selection Notes

Select this component when high gate sensitivity is required to minimize control circuit complexity. The isolated TO-220 package is suitable for applications requiring galvanic isolation between the control logic and the load. Verify that the 4 A continuous current rating meets the RMS load requirements under expected ambient temperatures.

Scrs Part Context

This part belongs to the Teccor line of sensitive SCRs, designed as half-wave unidirectional gate-controlled rectifiers. The product family covers ratings from 0.8 A to 10 A with voltages up to 600 V. The S2004DS2RP specifically addresses mid-range current applications needing precise gate triggering characteristics.

Scrs Replacement Considerations

Direct replacements include other sensitive SCRs with matching 4 A/400 V ratings and TO-220 isolation packages, such as the S4004VS2 or equivalent devices from other manufacturers offering similar gate sensitivity and thermal profiles.

Scrs FAQ

What is the isolation voltage rating of the S2004DS2RP?

The device provides a minimum high potential test of 2500 V ac rms from the leads to the mounting tab.

How does the gate trigger current affect performance?

With a maximum DC gate trigger current of 200 µA, the device requires minimal gate drive power, making it suitable for sensitive control circuits.

What is the maximum surge current capability?

The S2004DS2RP can withstand a peak one-cycle forward surge current of 50 A at 60 Hz.