Q4010R552

Triacs Overview

The Littelfuse Q4010R552 is a bidirectional triac belonging to the Qxx10xx series, designed for AC switching and phase control applications. It features a TO-220-2 through-hole package with an electrically isolated tab. The device supports a rated repetitive off-state voltage (VDRM) of 400 V and conducts an on-state RMS current (It RMS) of 10 A. Key electrical parameters include a maximum holding current of 50 mA, a gate trigger voltage of 2.5 V, and a gate trigger current ranging from 50 mA to 75 mA. It operates within a temperature range of -40°C to +125°C.

Triacs Feature Summary

• Electrically isolated mounting surface eliminates the need for external insulators
• Glass-passivated junctions ensure long-term parameter stability
• Bidirectional gate triggering capability for flexible circuit design

Triacs Applications

• AC speed controls
• Temperature modulation controls
• Lighting controls requiring noise immunity

Triacs Procurement Notes

Verify the specific suffix against official Littelfuse documentation to confirm exact pinout and isolation ratings. Ensure the procurement channel provides valid RoHS compliance certificates. Cross-reference the manufacturer part number with authorized distributor databases to prevent counterfeit components. Confirm thermal management requirements match the TO-220-2 package specifications.

Triacs Selection Notes

Select this component when a 400 V rating and 10 A continuous current capacity are required in a through-hole configuration. The electrically isolated tab simplifies heatsinking without additional insulation hardware. Verify that the gate trigger characteristics align with the driving circuit's output capabilities. Consider the operating temperature range for high-heat environments.

Triacs Part Context

This triac is part of the Qxx10xx family, which includes variants like the Q4010R5TP. These devices share similar electrical profiles but may differ in packaging or specific isolation ratings. The Q4010R552 specifically utilizes the TO-220-2 form factor, distinguishing it from surface-mount alternatives in the broader product line.

Triacs Replacement Considerations

Direct substitutes within the same series include the Q4010R5TP. Verify compatibility by comparing the VDRM, It RMS, and package dimensions. Ensure any replacement maintains the required electrical isolation between the main terminals and the mounting surface.