ACTT10-800CTQ TRIAC Equivalent & Substitute Parts

Part Overview

The ACTT10-800CTQ is a standard TRIAC thyristor manufactured by WeEn Semiconductors, rated for 800V off-state voltage and 10A on-state current in a TO-220AB through-hole package. This component is Active in product status and RoHS Compliant. Equivalent and substitute parts are identified based on matching electrical specifications and mechanical compatibility within the 800V TRIAC category. Alternative models may be required due to inventory availability, manufacturer lead times, or specific application requirements for enhanced performance characteristics such as snubberless operation or higher current ratings.

Key Parameters

Parameter	ACTT10-800CTQ
Voltage - Off State	800 V
Current - On State (It (RMS)) (Max)	10 A
Voltage - Gate Trigger (Vgt) (Max)	1.2 V
Current - Gate Trigger (Igt) (Max)	35 mA
Current - Hold (Ih) (Max)	55 mA
Current - Non Rep. Surge 50, 60Hz (Itsm)	90A, 99A
Package / Case	TO-220-3
Mounting Type	Through Hole
Operating Temperature	125°C (TJ)
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the ACTT10-800CTQ is determined by the following critical parameters:

Primary Matching Criteria:

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

Secondary Compatibility Criteria:

Current - On State (It (RMS)): 10A or higher (equal or superior rating)
Voltage - Gate Trigger (Vgt): Within acceptable gate drive range
Current - Gate Trigger (Igt): Within acceptable gate drive range
Current - Hold (Ih): Within acceptable holding current range

Substitute parts are grouped into two categories: direct equivalents matching 10A current rating, and higher-current alternatives (12A) suitable for applications with current margin requirements. Parts with lower current ratings (8A) are listed as downgrades and require application verification.

Parameter Comparison

Part Number	Manufacturer	Voltage - Off State	Current - On State (It (RMS)) (Max)	Voltage - Gate Trigger (Vgt) (Max)	Current - Gate Trigger (Igt) (Max)	Current - Hold (Ih) (Max)	Package / Case	Triac Type	Product Status
ACTT10-800CTQ	WeEn Semiconductors	800 V	10 A	1.2 V	35 mA	55 mA	TO-220-3	Standard	Active
BTA10-800BWRG	STMicroelectronics	800 V	10 A	1.3 V	50 mA	50 mA	TO-220-3	Alternistor - Snubberless	Active
BTB10-800BWRG	STMicroelectronics	800 V	10 A	1.3 V	50 mA	50 mA	TO-220-3	Alternistor - Snubberless	Active
BTA12-800BW3G	Littelfuse Inc.	800 V	12 A	1.1 V	50 mA	50 mA	TO-220-3	Standard	Active
BTA08-800BW3G	Littelfuse Inc.	800 V	8 A	1.1 V	50 mA	60 mA	TO-220-3	Standard	Active
BTB08-800BW3G	Littelfuse Inc.	800 V	8 A	1.1 V	50 mA	50 mA	TO-220-3	Standard	Active
MAC12HCNG	Littelfuse Inc.	800 V	12 A	1.5 V	50 mA	60 mA	TO-220-3	Standard	Active
MAC212A10G	onsemi	800 V	12 A	2 V	50 mA	50 mA	TO-220-3	Standard	Active
MAC9NG	Littelfuse Inc.	800 V	8 A	1.5 V	50 mA	50 mA	TO-220-3	Standard	Active

Engineering Selection Recommendations

Direct Equivalents (10A Rating): BTA10-800BWRG and BTB10-800BWRG from STMicroelectronics are direct current-rated equivalents. Both are Active status products with ROHS3 Compliance and REACH Unaffected certification. These parts feature Alternistor - Snubberless technology, which provides enhanced EMI performance compared to standard TRIAC designs. Gate trigger voltage is slightly elevated at 1.3V versus 1.2V on the ACTT10-800CTQ, requiring verification in gate drive circuits with marginal voltage supplies.

Higher Current Alternatives (12A Rating): BTA12-800BW3G and MAC12HCNG provide 12A current capacity with 800V rating in TO-220-3 packages. Both are Active status with ROHS3 Compliance. BTA12-800BW3G offers lower gate trigger voltage (1.1V) suitable for low-voltage gate drive applications. MAC12HCNG has higher gate trigger voltage (1.5V) and is supplied in Box packaging versus Tube. MAC212A10G from onsemi is rated 12A but has elevated gate trigger voltage (2V), requiring higher gate drive capability.

Lower Current Alternatives (8A Rating): BTA08-800BW3G, BTB08-800BW3G, and MAC9NG are rated 8A and represent current downgrades. These are suitable only for applications where the load current does not exceed 8A RMS. All three are Active status with ROHS3 Compliance. BTA08-800BW3G and BTB08-800BW3G have identical specifications with 1.1V gate trigger voltage. MAC9NG has 1.5V gate trigger voltage and is supplied in Box packaging.

All substitute parts maintain 800V off-state voltage, TO-220-3 package compatibility, and through-hole mounting. Selection should prioritize parts with Active product status and current compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can BTA10-800BWRG directly replace ACTT10-800CTQ? A: Yes. Both are rated 800V, 10A in TO-220-3 packages with through-hole mounting. Gate trigger voltage differs slightly (1.3V vs 1.2V), requiring verification that gate drive circuits can supply adequate voltage. BTA10-800BWRG features snubberless technology, which may reduce EMI in the application.

Q: What is the difference between standard TRIAC and Alternistor - Snubberless types? A: Snubberless TRIACs (BTA10-800BWRG, BTB10-800BWRG) have improved dV/dt immunity and reduced EMI generation compared to standard designs. They eliminate the need for external snubber networks in many applications. Standard TRIACs require external RC snubber circuits for dV/dt protection in high-noise environments.

Q: Can I use a 12A TRIAC in place of a 10A TRIAC? A: Yes, if the application circuit and thermal design accommodate the higher current rating. A 12A TRIAC provides additional current margin and is mechanically and electrically compatible with 10A applications. Verify gate trigger voltage compatibility with your gate drive circuit.

Q: Can I use an 8A TRIAC in place of a 10A TRIAC? A: Only if the application load current does not exceed 8A RMS. An 8A TRIAC is a current downgrade and removes the design margin provided by the 10A rating. This substitution requires application verification to confirm the load does not exceed 8A under any operating condition.

Q: What does TO-220-3 package mean? A: TO-220-3 is a through-hole package with three leads (Gate, MT1, MT2) mounted on a 0.1-inch pitch. All listed substitute parts use this identical package, ensuring mechanical compatibility with existing PCB layouts and heat sink mounting.

Q: Are all substitute parts RoHS compliant? A: The ACTT10-800CTQ is RoHS Compliant. All listed substitute parts are ROHS3 Compliant or RoHS Compliant, meeting current environmental regulations. Verify specific RoHS certification requirements for your application and region.

Q: What is the difference between Tube and Box packaging? A: Tube and Box are shipping and storage formats that do not affect component electrical or mechanical specifications. Tube packaging is standard for high-volume automated assembly. Box packaging is used for lower-volume or manual assembly applications. Both formats contain identical components.

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