MAC15NG TRIAC 800V 15A Equivalent & Substitute Parts

Part Overview

The MAC15NG 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 production and RoHS3 compliant. Equivalent and substitute parts are identified based on matching electrical characteristics, mechanical compatibility, and thermal operating ranges to support circuit design flexibility and supply chain continuity.

Key Parameters

Parameter	MAC15NG
Voltage - Off State	800 V
Current - On State (It RMS) Max	15 A
Voltage - Gate Trigger (Vgt) Max	1.5 V
Current - Gate Trigger (Igt) Max	35 mA
Current - Hold (Ih) Max	40 mA
Current - Non Rep. Surge (Itsm) @ 60Hz	150 A
Operating Temperature Range	-40°C to 125°C (TJ)
Package / Case	TO-220-3
Mounting Type	Through Hole
Triac Type	Standard
RoHS Status	RoHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts are grouped based on the following critical parameters that determine functional compatibility:

Voltage Rating (Off State): All substitutes maintain 800V rating
Current Rating (On State): Substitutes range from 6A to 16A; parts rated 15A or higher are direct functional equivalents
Package Type: All substitutes use TO-220-3 through-hole configuration
Gate Trigger Characteristics: Vgt and Igt parameters must support circuit gate drive requirements
Temperature Range: Operating temperature must accommodate application thermal environment
Triac Type: Standard TRIACs and Snubberless Alternistors are functionally distinct; selection depends on circuit snubber network design

Direct Equivalents (15A or higher current rating, standard TRIAC type):

BTA316-800C/L05Q (16A, Standard)
T1625T-8I (16A, Standard)

Functional Substitutes (12A-16A current rating, Snubberless Alternistor type):

BTA12-800CWRG (12A, Snubberless)
BTB12-800CWRG (12A, Snubberless)
BTB16-800CWRG (16A, Snubberless)
T1235T-8T (12A, Snubberless)
T1635T-8T (16A, Snubberless)

Lower Current Alternatives (6A-8A current rating):

T635T-8T (6A, Snubberless)
T835T-8T (8A, Snubberless)

Parameter Comparison

Part Number	Manufacturer	Triac Type	Voltage (V)	Current (A)	Vgt Max (V)	Igt Max (mA)	Ih Max (mA)	Itsm @ 60Hz (A)	Temp Range (°C)	Package
MAC15NG	Littelfuse Inc.	Standard	800	15	1.5	35	40	150	-40 to 125	TO-220AB
BTA12-800CWRG	STMicroelectronics	Snubberless	800	12	1.3	35	35	120, 126	-40 to 125	TO-220AB Insulated
BTA316-800C/L05Q	WeEn Semiconductors	Standard	800	16	1.0	35	35	140, 150	-40 to 125	TO-220AB
BTB12-800CWRG	STMicroelectronics	Snubberless	800	12	1.3	35	35	120, 126	-40 to 125	TO-220
BTB16-800CWRG	STMicroelectronics	Snubberless	800	16	1.3	35	35	160, 168	-40 to 125	TO-220
T1235T-8T	STMicroelectronics	Snubberless	800	12	1.3	35	40	90, 95	-40 to 150	TO-220
T1625T-8I	STMicroelectronics	Standard	800	16	1.3	25	35	120, 126	-40 to 150	TO-220AB Insulated
T1635T-8T	STMicroelectronics	Snubberless	800	16	1.3	35	40	120, 126	-40 to 150	TO-220
T635T-8T	STMicroelectronics	Snubberless	800	6	1.3	35	40	45, 47	-40 to 150	TO-220
T835T-8T	STMicroelectronics	Snubberless	800	8	1.3	35	40	60, 63	-40 to 150	TO-220

Engineering Selection Recommendations

For Direct Replacement (Standard TRIAC Type, 15A+ Current Rating):

BTA316-800C/L05Q and T1625T-8I are functionally equivalent to MAC15NG. Both maintain 800V voltage rating, support 16A on-state current, and use TO-220-3 through-hole packages. BTA316-800C/L05Q operates to 125°C; T1625T-8I extends to 150°C. Both are RoHS3 compliant and active in production.

For Snubberless Circuit Designs:

BTB16-800CWRG and T1635T-8T provide 16A current capacity with Snubberless Alternistor technology. These parts are suitable for applications where snubber networks are not required. BTB16-800CWRG operates to 125°C; T1635T-8T extends to 150°C. Both support the full gate trigger range and are RoHS3 compliant.

For Current-Reduced Applications:

BTA12-800CWRG, BTB12-800CWRG, and T1235T-8T provide 12A current capacity. These parts are suitable where circuit load does not require the full 15A rating. All three are RoHS3 compliant and operate to 125°C or higher.

For Lower Current Requirements:

T635T-8T (6A) and T835T-8T (8A) are suitable for applications with reduced current demands. Both extend operating temperature to 150°C and are RoHS3 compliant.

All substitute parts maintain RoHS3 compliance, REACH unaffected status, and EAR99 export classification consistent with MAC15NG.

Frequently Asked Questions (FAQ)

Q: Can BTA12-800CWRG replace MAC15NG in a 15A application?

A: BTA12-800CWRG is rated for 12A on-state current, which is below the MAC15NG 15A rating. Use only if circuit load does not exceed 12A RMS. Verify actual load current before substitution.

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

A: Standard TRIACs (MAC15NG, BTA316-800C/L05Q, T1625T-8I) require external snubber networks in certain applications. Snubberless Alternistors (BTA12-800CWRG, BTB16-800CWRG, T1635T-8T) are designed to operate without snubber networks. Circuit design determines which type is appropriate.

Q: Are TO-220AB and TO-220 packages mechanically interchangeable?

A: TO-220-3 and TO-220AB are mechanically compatible for through-hole mounting. TO-220AB Insulated variants include isolation between the tab and leads. Verify PCB layout and thermal requirements before substitution.

Q: Does T1625T-8I have a lower gate trigger current than MAC15NG?

A: T1625T-8I specifies Igt Max of 25 mA compared to MAC15NG 35 mA. This lower value may require gate drive circuit adjustment. Verify gate drive capability before substitution.

Q: Can I use T635T-8T (6A) in place of MAC15NG (15A)?

A: T635T-8T is rated for 6A on-state current. Use only if circuit load does not exceed 6A RMS. This part is suitable for lower-power applications only.

Q: Which substitute parts support the extended temperature range to 150°C?

A: T1235T-8T, T1625T-8I, T1635T-8T, T635T-8T, and T835T-8T all operate to 150°C. MAC15NG and most STMicroelectronics BTA/BTB series operate to 125°C.

Q: Are all substitute parts RoHS3 compliant?

A: All listed substitute parts are RoHS3 compliant and REACH unaffected, consistent with MAC15NG compliance status.

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