MAC16DG TRIAC Equivalent & Substitute Parts

Part Overview

The MAC16DG is a standard TRIAC manufactured by Littelfuse Inc., rated for 400V off-state voltage and 16A on-state current in a TO-220AB through-hole package. This component is actively produced and widely used in AC switching applications requiring reliable thyristor performance across industrial and consumer electronics. Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and regulatory compliance can be maintained while addressing specific application requirements such as increased current capacity or voltage rating.

Substiute Parts

MAC16DG

Littelfuse Inc.In Stock: 2059MAC16DG Datasheet

Current PartRFQ

Q4025R6TP

Littelfuse Inc.In Stock: 2808Q4025R6TP Datasheet

MFR RecommendedRFQ

BTB16-600BWRG

STMicroelectronicsIn Stock: 105339BTB16-600BWRG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAC16DG is determined by the following criteria:

Mandatory Compatibility Parameters:

• Package / Case: TO-220-3 (mechanical fit and pin compatibility)
• Mounting Type: Through Hole (assembly process compatibility)
• Operating Temperature Range: -40°C ~ 125°C minimum (thermal envelope)
• Configuration: Single (functional equivalence)

Electrical Performance Parameters:

• Voltage - Off State: 400V minimum (voltage rating must equal or exceed the original)
• Current - On State (It (RMS)): 16A minimum (current capacity must equal or exceed the original)
• Voltage - Gate Trigger (Vgt): 1.5V maximum (gate sensitivity must be equal or better)
• Current - Gate Trigger (Igt): 50mA maximum (gate drive requirement must be equal or lower)
• Current - Hold (Ih): 50mA maximum (holding current must be equal or lower)

Regulatory Compliance:

• RoHS3 Compliant
• REACH Unaffected
• ECCN: EAR99

The identified substitute parts meet or exceed these parameters while maintaining full mechanical and electrical compatibility with the MAC16DG.

Parameter Comparison

Engineering Selection Recommendations

Q4025R6TP (Littelfuse Inc.)

This substitute provides increased current capacity at 25A on-state current while maintaining the same 400V voltage rating. The Alternistor - Snubberless design offers improved gate sensitivity (1.3V vs. 1.5V) and higher surge current capability (208A, 250A vs. 150A). This part is suitable for applications requiring higher current handling within the same voltage class. Both parts are manufactured by Littelfuse Inc., ensuring consistent design philosophy and quality standards. Active product status and full RoHS3/REACH compliance are maintained.

BTB16-600BWRG (STMicroelectronics)

This substitute maintains the 16A on-state current rating while providing an elevated 600V off-state voltage rating. The Alternistor - Snubberless technology delivers improved gate sensitivity (1.3V vs. 1.5V) and maintains the 50mA gate trigger current specification. This part is applicable to applications requiring higher voltage margin or operation in higher voltage AC circuits. Active product status and full RoHS3/REACH compliance are maintained. Significantly higher inventory availability (105,300 pcs) supports supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the Q4025R6TP replace the MAC16DG in all applications?

A: The Q4025R6TP is electrically compatible with the MAC16DG for applications operating at 400V or below. The higher current rating (25A vs. 16A) and improved gate sensitivity provide enhanced performance margins. However, the increased gate trigger current (80mA vs. 50mA) and hold current (100mA vs. 50mA) may require gate drive circuit verification in designs with marginal gate current availability.

Q: What is the primary advantage of the BTB16-600BWRG?

A: The BTB16-600BWRG provides a 600V voltage rating, offering 200V additional voltage margin compared to the MAC16DG. This is beneficial for applications subject to voltage transients or those designed for operation in higher voltage AC systems. The current rating remains equivalent at 16A, and gate specifications match the original part exactly.

Q: Are all three parts mechanically interchangeable?

A: Yes. All three parts use the TO-220-3 package with TO-220AB or TO-220 supplier device packages, ensuring identical pin configuration, lead spacing, and mounting hole alignment for through-hole assembly.

Q: Do the substitute parts maintain the same thermal characteristics?

A: All three parts share the identical operating temperature range of -40°C ~ 125°C (TJ). Thermal performance differences between Standard and Alternistor - Snubberless designs are not specified in the provided parameters and must be evaluated through detailed thermal analysis if critical to the application.

Q: Are there any gate drive considerations when switching from MAC16DG to Q4025R6TP?

A: The Q4025R6TP requires higher gate trigger current (80mA maximum vs. 50mA maximum) and higher hold current (100mA maximum vs. 50mA maximum). Gate drive circuits must be verified to supply these increased current levels reliably.

Q: Which substitute should be selected for maximum supply chain availability?

A: The BTB16-600BWRG offers the highest inventory level at 105,300 pcs, compared to 2,776 pcs for Q4025R6TP and 2,018 pcs for MAC16DG. This part is recommended when supply continuity is a primary selection criterion.