MAC12SM

Triacs Overview

The MAC12SM is a silicon bidirectional thyristor (Triac) from onsemi, designed for full-wave AC load control in industrial and consumer applications. It features a sensitive gate architecture compatible with microcontrollers and logic circuits. The device offers a peak repetitive off-state voltage of 600 V and supports an RMS on-state current of 12 A at 70°C case temperature. It withstands a non-repetitive surge current of 90 A and operates within a junction temperature range of -40°C to 110°C. Packaged in a rugged TO-220AB (Case 221A), it includes glass-passivated junctions for reliability.

Triacs Feature Summary

• Sensitive gate design enables triggering by low-power microcontrollers and logic circuits
• High commutating di/dt capability ensures robust performance during rapid current changes
• Glass passivation provides enhanced reliability and uniformity across the junction
• Operational in three quadrants (Q1, Q2, Q3) for versatile AC switching applications

Triacs Applications

• Appliance controls
• Heater controls
• Motor controls
• General power switching applications

Triacs Procurement Notes

Verify the specific part number suffix against official documentation to confirm voltage ratings and package variations. The MAC12SM variant specifies a 600 V blocking voltage, distinct from the MAC12SN which is rated for 800 V. Ensure compatibility with RoHS compliance requirements if applicable to the target assembly process. Confirm thermal management strategies align with the specified junction-to-case thermal resistance values provided in the datasheet.

Triacs Selection Notes

Select this component for AC loads requiring full-wave control where sensitive gate triggering is necessary. The 12 A RMS rating suits moderate power applications, while the 600 V blocking voltage defines the maximum circuit voltage limits. Consider the TO-220AB package for through-hole mounting and adequate heat dissipation. Evaluate the 90 A surge capability against potential inrush currents in the specific load type to ensure device survival during startup conditions.

Triacs Part Context

This Triac belongs to the MAC12SxG family of sensitive gate devices manufactured by onsemi. The family shares identical electrical characteristics and pinouts but differs in voltage ratings based on the middle letter suffix. The MAC12SM specifically denotes the 600 V version, whereas the MAC12SN represents the 800 V variant. Both are housed in the standard TO-220AB package.

Triacs Replacement Considerations

The MAC12SN serves as a direct functional substitute with higher voltage tolerance (800 V vs. 600 V). Other Triacs from different manufacturers may require verification of gate trigger current specifications to ensure compatibility with existing drive circuits.