MAC12SM TRIAC Equivalent & Substitute Parts

Part Overview

The MAC12SM is a Logic - Sensitive Gate TRIAC rated for 600V off-state voltage and 12A on-state current, packaged in TO-220-3 through-hole configuration. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The MAC12SM remains available in inventory but active substitutes provide enhanced compliance and availability advantages.

Substiute Parts

MAC12SM

onsemiIn Stock: 792MAC12SM Datasheet

Current PartRFQ

MAC12SMG

Littelfuse Inc.In Stock: 1697MAC12SMG Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAC12SM is determined by strict equivalence across the following critical parameters:

• Triac Type classification (Logic - Sensitive Gate)
• Voltage - Off State rating (600 V minimum)
• Current - On State rating (12 A minimum)
• Voltage - Gate Trigger specification (1.5 V maximum)
• Current - Gate Trigger specification (5 mA maximum)
• Current - Hold specification (10 mA maximum)
• Surge current rating (90A @ 60Hz minimum)
• Operating temperature range (-40°C ~ 110°C minimum)
• Through-hole mounting configuration
• TO-220 package family compatibility

The MAC12SMG from Littelfuse Inc. meets all substitution criteria with identical electrical specifications and compatible TO-220AB packaging.

Parameter Comparison

Engineering Selection Recommendations

The MAC12SMG from Littelfuse Inc. is the direct functional equivalent for MAC12SM applications. Selection of MAC12SMG is supported by:

• Complete electrical parameter equivalence across all critical specifications
• Active product status ensuring long-term availability and supply chain stability
• ROHS3 compliance, addressing regulatory requirements not met by the obsolete MAC12SM
• Identical TO-220-3 package footprint and pinout for direct PCB compatibility
• Higher inventory availability (1670 Pcs vs 748 Pcs) for procurement reliability

For new designs or redesigns, MAC12SMG is the appropriate selection. For legacy system maintenance where MAC12SM inventory remains available, MAC12SMG provides a compliant forward path.

Frequently Asked Questions (FAQ)

Q: Can MAC12SMG replace MAC12SM in existing designs? A: Yes. MAC12SMG provides complete electrical equivalence with identical voltage, current, and thermal specifications. TO-220-3 package compatibility ensures direct PCB substitution without layout modifications.

Q: What is the difference between TO-220 and TO-220AB packaging? A: Both designations refer to the same three-lead through-hole package family. TO-220AB is the supplier device package designation for MAC12SMG. Mechanical and electrical compatibility with TO-220-3 is maintained.

Q: Why is MAC12SM listed as obsolete? A: Obsolete status indicates the manufacturer (onsemi) has discontinued active production. MAC12SMG from Littelfuse Inc. provides continuity for applications requiring this TRIAC specification.

Q: Are there compliance differences between MAC12SM and MAC12SMG? A: Yes. MAC12SMG meets ROHS3 compliance requirements, while MAC12SM is RoHS non-compliant. Both are REACH Unaffected and classified under ECCN EAR99.

Q: What are the critical parameters for TRIAC substitution? A: Voltage rating, current rating, gate trigger specifications, hold current, surge current capability, operating temperature range, and package type must all match or exceed the original component requirements.

Q: Is MAC12SMG the only substitute for MAC12SM? A: Based on the provided data, MAC12SMG is the identified direct substitute meeting all electrical and mechanical equivalence criteria.