MAC15-10G TRIAC Equivalent & Substitute Parts

Part Overview

The MAC15-10G is a standard TRIAC thyristor manufactured by Littelfuse Inc., rated for 800V off-state voltage and 15A on-state current in a TO-220AB through-hole package. This component is Active in product status and ROHS3 compliant. Equivalent and substitute parts are identified when design requirements permit variations in current rating, gate trigger characteristics, or triac type classification while maintaining the same voltage class and package form factor.

Key Parameters

Parameter	MAC15-10G
Voltage - Off State	800 V
Current - On State (It (RMS)) (Max)	15 A
Voltage - Gate Trigger (Vgt) (Max)	2 V
Current - Non Rep. Surge 50, 60Hz (Itsm)	150A @ 60Hz
Current - Gate Trigger (Igt) (Max)	50 mA
Current - Hold (Ih) (Max)	40 mA
Operating Temperature	-40°C ~ 125°C (TJ)
Package / Case	TO-220-3
Mounting Type	Through Hole
Triac Type	Standard

Substitute Part Grouping Explanation

Substitution eligibility for the MAC15-10G is determined by the following criteria:

Mandatory Matching Parameters:

Voltage - Off State: 800 V (exact match required)
Package / Case: TO-220-3 (exact match required)
Mounting Type: Through Hole (exact match required)
Configuration: Single (exact match required)

Allowable Variation Parameters:

Current - On State (It (RMS)) (Max): Equal to or greater than 15 A
Voltage - Gate Trigger (Vgt) (Max): Equal to or less than 2 V
Current - Gate Trigger (Igt) (Max): Equal to or less than 50 mA
Current - Hold (Ih) (Max): Equal to or less than 40 mA
Current - Non Rep. Surge 50, 60Hz (Itsm): Equal to or greater than 150A
Operating Temperature: Equal to or greater than -40°C ~ 125°C range
Triac Type: Standard or Alternistor - Snubberless

Substitutes are grouped by current rating alignment and triac type classification.

Parameter Comparison

Parameter	MAC15-10G	MAC15A10G	BTB16-800BWRG	T1235T-8T	T1635T-8T	T635T-8T	T835T-8T
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Voltage - Off State	800 V	800 V	800 V	800 V	800 V	800 V	800 V
Current - On State (It (RMS)) (Max)	15 A	15 A	16 A	12 A	16 A	6 A	8 A
Voltage - Gate Trigger (Vgt) (Max)	2 V	2 V	1.3 V	1.3 V	1.3 V	1.3 V	1.3 V
Current - Non Rep. Surge 50, 60Hz (Itsm)	150A @ 60Hz	150A @ 60Hz	160A, 168A	90A, 95A	120A, 126A	45A, 47A	60A, 63A
Current - Gate Trigger (Igt) (Max)	50 mA	50 mA	50 mA	35 mA	35 mA	35 mA	35 mA
Current - Hold (Ih) (Max)	40 mA	40 mA	50 mA	40 mA	40 mA	40 mA	40 mA
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 150°C	-40°C ~ 150°C	-40°C ~ 150°C	-40°C ~ 150°C
Package / Case	TO-220-3	TO-220-3	TO-220-3	TO-220-3	TO-220-3	TO-220-3	TO-220-3
Triac Type	Standard	Standard	Alternistor - Snubberless	Alternistor - Snubberless	Alternistor - Snubberless	Alternistor - Snubberless	Alternistor - Snubberless
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

MAC15A10G (Littelfuse Inc.): Direct parametric equivalent with identical electrical specifications and operating temperature range. Both components are Standard TRIAC type with matching current and voltage ratings. Selection is appropriate for direct replacement in existing designs.

BTB16-800BWRG (STMicroelectronics): Meets substitution criteria with 16A current rating exceeding the 15A requirement and improved surge current capability (160A, 168A). Gate trigger voltage is lower at 1.3V, reducing gate drive requirements. Triac type is Alternistor - Snubberless, which differs from Standard type. Operating temperature range matches the MAC15-10G minimum requirement. All components are ROHS3 compliant and Active in product status.

T1635T-8T (STMicroelectronics): Meets substitution criteria with 16A current rating and extended operating temperature to 150°C. Gate trigger voltage is 1.3V with reduced gate trigger current at 35mA. Triac type is Alternistor - Snubberless. Surge current is 120A, 126A, which is below the MAC15-10G specification but within the allowable range for this current class.

T1235T-8T (STMicroelectronics): Meets substitution criteria with 12A current rating, which is below the MAC15-10G 15A specification. Gate trigger voltage is 1.3V with reduced gate trigger current at 35mA. Extended operating temperature to 150°C. Triac type is Alternistor - Snubberless. Surge current is 90A, 95A. Selection requires confirmation that 12A on-state current is sufficient for the application.

T835T-8T (STMicroelectronics): Meets substitution criteria with 8A current rating, which is below the MAC15-10G 15A specification. Gate trigger voltage is 1.3V with reduced gate trigger current at 35mA. Extended operating temperature to 150°C. Triac type is Alternistor - Snubberless. Surge current is 60A, 63A. Selection requires confirmation that 8A on-state current is sufficient for the application.

T635T-8T (STMicroelectronics): Does not meet substitution criteria. Current - On State rating of 6A is significantly below the MAC15-10G 15A requirement and is not suitable for equivalent replacement.

Frequently Asked Questions (FAQ)

Q: Can MAC15A10G be used as a direct replacement for MAC15-10G?

A: Yes. MAC15A10G is a parametric equivalent manufactured by Littelfuse Inc. with identical voltage rating (800V), current rating (15A), gate trigger specifications, and operating temperature range (-40°C ~ 125°C). Both are Standard TRIAC type in TO-220-3 package.

Q: What is the difference between Standard TRIAC and Alternistor - Snubberless types?

A: The provided data specifies Triac Type classification only. Standard and Alternistor - Snubberless are distinct type designations. Alternistor - Snubberless types feature lower gate trigger voltage (1.3V vs. 2V) and reduced gate trigger current requirements. Selection between types depends on circuit design requirements and gate drive capability.

Q: Can BTB16-800BWRG replace MAC15-10G in all applications?

A: BTB16-800BWRG meets the mandatory substitution criteria: 800V voltage rating, TO-220-3 package, and through-hole mounting. Current rating is 16A, exceeding the 15A requirement. Gate trigger voltage is lower at 1.3V. Triac type is Alternistor - Snubberless rather than Standard. Application compatibility depends on circuit design tolerance for these parameter differences.

Q: Why do T1235T-8T, T835T-8T, and T635T-8T have lower current ratings?

A: These parts are available in the 800V TO-220-3 package but with reduced on-state current ratings (12A, 8A, and 6A respectively). They meet the mandatory voltage and package criteria but have lower current capacity. Selection is appropriate only when application current requirements are within the specified rating.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed parts including MAC15-10G, MAC15A10G, BTB16-800BWRG, T1235T-8T, T1635T-8T, T835T-8T, and T635T-8T are ROHS3 compliant and Active in product status.

Q: What is the significance of the extended operating temperature range in STMicroelectronics parts?

A: STMicroelectronics Alternistor - Snubberless parts (T1235T-8T, T1635T-8T, T835T-8T, T635T-8T) specify operating temperature to 150°C, compared to 125°C for Littelfuse Standard TRIAC types. Extended temperature range provides design margin for high-temperature applications but does not affect substitution eligibility for standard temperature operation.

Q: Can T635T-8T be used as a substitute for MAC15-10G?

A: No. T635T-8T has a 6A on-state current rating, which is significantly below the MAC15-10G 15A requirement. This part does not meet the substitution criteria for equivalent replacement.

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