MAC4N

Triacs Overview

The MAC4N is a silicon TRIAC manufactured by onsemi, designed for general-purpose AC power control applications. It features a four-layer PNPN structure with three terminals: main terminal 1 (MT1), main terminal 2 (MT2), and gate (G). The device is available in multiple voltage ratings, including 600V, 700V, 800V, and 1000V versions, allowing selection based on specific line voltage requirements. It supports an RMS on-state current of 4A and can handle repetitive peak on-state currents up to 35A. The component operates within a junction temperature range of -40°C to +125°C and is housed in a DPAK-3 surface-mount package.

Triacs Feature Summary

• Four-quadrant triggering capability ensures reliable gate activation regardless of MT2 polarity relative to MT1.
• High surge current handling capacity allows robust operation during transient load conditions.
• Surface-mount DPAK-3 packaging facilitates automated assembly and compact PCB layout.

Triacs Applications

• Solid-state relays for industrial switching
• Lighting dimmer circuits for residential and commercial use
• Motor speed control systems for small appliances

Triacs Procurement Notes

Verify the specific suffix code to confirm the exact blocking voltage rating, as the base part number covers multiple voltage variants. Confirm lead-free status if RoHS compliance is required for the target market. Ensure the selected package matches the PCB footprint design, typically DPAK-3 for this series. Cross-reference datasheets from onsemi or authorized distributors to validate electrical parameters against the specific orderable part number.

Triacs Selection Notes

Select the appropriate voltage rating based on the maximum AC line voltage and expected transients in the application circuit. Consider the thermal management requirements for the DPAK-3 package when designing for continuous 4A loads. Verify that the gate trigger current requirements align with the driving logic levels. Evaluate the need for snubber circuits if the load is highly inductive to protect the device from dv/dt stress.

Triacs Part Context

The MAC4N belongs to the family of medium-power TRIACs used for AC phase control. It serves as a direct replacement for older through-hole TRIACs in modern surface-mount designs. The device is widely used in consumer electronics and industrial controls where compact size and reliable switching are critical. Variants exist with different voltage ratings to suit various global mains standards.

Triacs Replacement Considerations

Direct replacements include the MAC4DCN and MAC4DSMT4, which share similar electrical characteristics and pinouts. Check the voltage rating suffixes carefully, as they differ between models. Ensure the replacement device supports the same package type or requires adapter considerations. Verify gate sensitivity matches the existing drive circuitry.