MAC4DSMT4G

Triacs Overview

The Littelfuse MAC4DSMT4G is a surface-mount TRIAC housed in a DPAK-3 package. It supports peak repetitive off-state voltages of 600 V (MAC4DSM) and 800 V (MAC4DSN). The device handles an on-state RMS current of 4.0 A at 108°C case temperature, with a peak non-repetitive surge current of 40 A. Electrical characteristics include a maximum gate trigger current of 10 mA across three quadrants and a holding current maximum of 15 mA. Operating junction temperatures range from -40°C to +125°C.

Triacs Feature Summary

• Designed for high-volume industrial and consumer applications including motor control, process control, and light or speed regulation.
• Features passivated die construction to ensure long-term reliability and parameter uniformity.
• Provides high immunity to commutating dv/dt, rated at 50 V/μs at 125°C without external snubber networks.

Triacs Applications

• Motor control systems
• Process control circuits
• Temperature modulation controls
• Lighting dimmers and speed control

Triacs Procurement Notes

Verify the specific voltage rating suffix required for the application: 'M' indicates 600V capability, while 'N' indicates 800V capability. Confirm that the DPAK-3 tape and reel packaging aligns with automated assembly requirements. Ensure the Pb-free designation matches environmental compliance standards for the target market.

Triacs Selection Notes

Select based on the required blocking voltage; choose MAC4DSM for 600V or MAC4DSN for 800V ratings. Evaluate thermal management needs as the 4.0A rating is specified at a 108°C case temperature. Consider the low gate trigger current requirement when designing the drive circuitry to ensure reliable triggering in all operating quadrants.

Triacs Part Context

This component belongs to the MAC4DS series of surface-mount thyristors manufactured by Littelfuse. It shares the same physical DPAK-3 footprint and electrical current capabilities as other variants in the family, differentiated primarily by their voltage blocking ratings and specific ordering suffixes for packaging or lead-free status.

Triacs Replacement Considerations

Direct substitutes within the same manufacturer family include MAC4DSNT4G for the 800V variant. Cross-manufacturer replacements require matching the DPAK-3 package, 4A RMS current rating, and equivalent dv/dt immunity specifications.