MAC15N

Triacs Overview

The MAC15N is a silicon bidirectional thyristor (TRIAC) manufactured by onsemi, designed for high-performance full-wave AC control applications. It features an 800 V peak repetitive off-state voltage and a 15 A RMS on-state current rating at a case temperature of 80°C. The device operates within a junction temperature range of -40°C to +125°C and utilizes a TO-220 package. Key electrical characteristics include a minimum critical rate of rise of off-state voltage (dv/dt) of 250 V/µs at 125°C and a minimum commutating di/dt of 9.0 A/ms at 125°C. Gate trigger currents are uniform across three operating modes, with maximum values of 35 mA.

Triacs Feature Summary

• High noise immunity with dv/dt ratings up to 250 V/µs at elevated temperatures
• Robust commutation capability with a minimum di/dt of 9.0 A/ms
• Operational in Quadrants Q1, Q2, and Q3 for versatile gate triggering
• Designed to minimize the need for external snubber networks

Triacs Applications

• High performance full-wave AC control systems
• Industrial motor speed controls requiring high commutating di/dt
• Solid-state relays demanding high noise immunity
• Lighting dimmers and heating controllers

Triacs Procurement Notes

Verify the specific ordering suffix 'G' for Pb-free and RoHS compliance status when sourcing. Confirm the package type matches the required thermal management strategy, as the TO-220 form factor dictates specific mounting constraints. Ensure that the application circuit design accounts for the 15 A RMS rating at a case temperature of 80°C rather than ambient conditions. Cross-reference the datasheet revision number to ensure alignment with the latest electrical characteristics and thermal resistance values provided by the manufacturer.

Triacs Selection Notes

Select the MAC15N over the MAC15M variant when the application requires a higher blocking voltage rating of 800 V compared to the 600 V offered by the M series. Consider the thermal resistance values of 2.0 °C/W junction-to-case and 62.5 °C/W junction-to-ambient for heatsink calculations. Verify that the gate drive circuit can supply the necessary trigger current, which peaks at 35 mA across all quadrants. Evaluate the surge current capability of 150 A for one full cycle sine wave at 60 Hz to ensure protection against transient loads.

Triacs Part Context

The MAC15N belongs to the MAC15 family of TRIACs from onsemi, sharing the same physical package and general thermal profile as the MAC15M. The primary distinction lies in the voltage rating, with the N suffix denoting the 800 V capability. Both devices utilize the industry-standard TO-220 package and are intended for similar AC power control environments. This family is characterized by its ability to operate reliably in multiple quadrants while maintaining high immunity to voltage transients.

Triacs Replacement Considerations

The MAC15M serves as a direct pin-compatible alternative if the system voltage does not exceed 600 V. Verify that any substitute component maintains or exceeds the 15 A RMS current rating and the 250 V/µs dv/dt specification. Ensure the replacement device supports operation in Quadrants Q1, Q2, and Q3 to maintain compatibility with existing gate drive circuits.