Q4015L5

Triacs Overview

The Littelfuse Q4015L5 is a bidirectional triac from the Teccor Qxx15xx series, designed for AC switching and phase control applications. It features a 400 V rated repetitive off-state voltage (VDRM) and supports an on-state RMS current (ITRMS) of 15 A. The device operates within a temperature range of -40 °C to +125 °C and utilizes a TO-220-2 through-hole package. Key electrical parameters include a maximum holding current of 70 mA, a gate trigger voltage of 2.5 V, and a gate trigger current of 50 mA. It exhibits an on-state voltage of 1.6 V and a non-repetitive peak on-state current capability of 167 A or 200 A depending on the specific test condition.

Triacs Feature Summary

• Integrated glass-passivated junctions ensure long-term parameter stability and device reliability.
• Electrically isolated TO-220 package eliminates the need for external insulators and separate mounting steps.
• Gate-controlled bidirectional switching allows operation for either polarity of main terminal voltage.

Triacs Applications

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

Triacs Procurement Notes

Verify the exact suffix against official Littelfuse documentation to confirm pinout and isolation specifications. Ensure the selected component matches the required thermal management capabilities for the intended load current. Confirm RoHS compliance status via the manufacturer's latest datasheet before finalizing procurement orders.

Triacs Selection Notes

Select this component when a 15 A RMS current rating and 400 V blocking voltage are required in a through-hole configuration. Consider the 70 mA holding current limit to ensure reliable turn-off in low-load scenarios. Verify that the gate drive circuit can supply at least 50 mA to guarantee consistent triggering across the specified operating temperature range.

Triacs Part Context

This part belongs to the Teccor Quadrac family, which integrates a diac trigger within the same package as the triac. This integration simplifies assembly by removing the need for discrete diac components. The series is engineered for robust AC switching performance with high dv/dt immunity, making it suitable for industrial and consumer AC control circuits.

Triacs Replacement Considerations

Direct replacements must match the 15 A ITRMS, 400 V VDRM, and TO-220-2 package constraints. Verify equivalent gate trigger characteristics and holding current limits to maintain circuit stability. Cross-reference with other Littelfuse Qxx15xx variants for potential pin-compatible alternatives if supply is limited.