ACTT10-800CQ TRIAC Equivalent & Substitute Parts

Part Overview

The ACTT10-800CQ 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 and in production, with 765 units currently in stock. Alternative equivalent parts are necessary when the primary part is unavailable, when specific manufacturer preferences exist, or when design requirements allow for compatible electrical and mechanical parameters within the same product category.

Key Parameters

Parameter	Value
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
Triac Type	Standard
Package / Case	TO-220-3
Mounting Type	Through Hole
Operating Temperature	125°C (TJ)
Configuration	Single

Substitute Part Grouping Explanation

Substitution of the ACTT10-800CQ is determined by the following critical parameters:

Voltage Rating (Off State): Must be 800V to maintain circuit protection and component reliability
Current Rating (On State): Substitutes must support 10A or higher to ensure adequate current handling capacity
Package Type: TO-220-3 through-hole configuration is required for mechanical and thermal compatibility
Triac Type: Standard or Alternistor (Snubberless) types are both acceptable as they share the same electrical interface
Gate Trigger Parameters: Vgt, Igt, and Ih must be within acceptable ranges for gate drive circuit compatibility

Substitute parts are grouped into two categories:

Category A - Direct Current Rating Match (10A): Parts with 10A on-state current rating provide identical current handling capacity.

Category B - Higher Current Rating (12A): Parts rated for 12A current provide enhanced current capacity while maintaining full backward compatibility with the original 10A design requirement.

Category C - Lower Current Rating (8A): Parts rated for 8A current are suitable only for applications where the design margin allows reduced current capacity.

Parameter Comparison

Part Number	Manufacturer	Voltage - Off State	Current - On State (Max)	Vgt (Max)	Igt (Max)	Ih (Max)	Triac Type	Operating Temp	RoHS Status	Inventory
ACTT10-800CQ	WeEn Semiconductors	800 V	10 A	1.2 V	35 mA	55 mA	Standard	125°C	RoHS Compliant	765 Pcs
ACST830-8T	STMicroelectronics	800 V	8 A	1 V	30 mA	30 mA	Standard	-40°C ~ 125°C	ROHS3 Compliant	3571 Pcs
BTA08-800BW3G	Littelfuse Inc.	800 V	8 A	1.1 V	50 mA	60 mA	Standard	-40°C ~ 125°C	ROHS3 Compliant	17800 Pcs
BTA10-800BWRG	STMicroelectronics	800 V	10 A	1.3 V	50 mA	50 mA	Alternistor - Snubberless	-40°C ~ 125°C	ROHS3 Compliant	900400 Pcs
BTB08-800BW3G	Littelfuse Inc.	800 V	8 A	1.1 V	50 mA	50 mA	Standard	-40°C ~ 125°C	ROHS3 Compliant	1144 Pcs
BTB10-800BWRG	STMicroelectronics	800 V	10 A	1.3 V	50 mA	50 mA	Alternistor - Snubberless	-40°C ~ 125°C	ROHS3 Compliant	1625 Pcs
MAC12HCNG	Littelfuse Inc.	800 V	12 A	1.5 V	50 mA	60 mA	Standard	-40°C ~ 125°C	ROHS3 Compliant	2200 Pcs
MAC212A10G	onsemi	800 V	12 A	2 V	50 mA	50 mA	Standard	-40°C ~ 125°C	Not specified	5015 Pcs
MAC9NG	Littelfuse Inc.	800 V	8 A	1.5 V	50 mA	50 mA	Standard	-40°C ~ 125°C	ROHS3 Compliant	3703 Pcs

Engineering Selection Recommendations

Primary Substitutes (Recommended)

BTA10-800BWRG and BTB10-800BWRG are the preferred substitutes. Both maintain the 10A current rating, 800V voltage specification, and TO-220-3 package configuration. These parts are manufactured by STMicroelectronics with ROHS3 compliance and extended operating temperature range (-40°C to 125°C). The Alternistor - Snubberless type provides enhanced EMI performance characteristics. Inventory availability is substantial (900400 and 1625 units respectively).

Secondary Substitutes (Current Derating)

ACST830-8T, BTA08-800BW3G, BTB08-800BW3G, and MAC9NG are suitable when design margins permit operation at 8A on-state current. All maintain 800V voltage rating and TO-220-3 package compatibility. These parts carry ROHS3 compliance and extended temperature range. Selection among these options depends on gate trigger parameter requirements and inventory availability.

Higher Current Capacity Substitutes

MAC12HCNG and MAC212A10G provide 12A on-state current rating, offering increased design margin. Both maintain 800V voltage specification and TO-220-3 package configuration. MAC12HCNG carries ROHS3 compliance with extended temperature range. MAC212A10G compliance status is not specified in available data. These parts are suitable for applications requiring enhanced current capacity.

Frequently Asked Questions (FAQ)

Q: Can I use an 8A rated TRIAC in place of the 10A ACTT10-800CQ?

A: Yes, if your circuit design allows operation at reduced current capacity. Parts such as ACST830-8T, BTA08-800BW3G, BTB08-800BW3G, and MAC9NG maintain the 800V voltage rating and TO-220-3 package. Verify that your application does not require the full 10A current capacity before substitution.

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

A: Both types share identical electrical interfaces and package configurations. Alternistor - Snubberless types (BTA10-800BWRG, BTB10-800BWRG) provide improved EMI performance and reduced snubber circuit requirements. Standard types require external snubber networks in noise-sensitive applications.

Q: Are 12A rated TRIACs backward compatible with 10A designs?

A: Yes. MAC12HCNG and MAC212A10G provide higher current capacity while maintaining 800V voltage rating and TO-220-3 package compatibility. These parts operate within the same gate drive requirements and thermal characteristics as the original 10A design.

Q: Does package type affect substitution compatibility?

A: Yes. All listed substitutes use TO-220-3 through-hole package configuration, ensuring mechanical and thermal compatibility with the original ACTT10-800CQ. Package type is a non-negotiable substitution criterion.

Q: What compliance certifications should I verify before substitution?

A: All recommended substitutes carry ROHS3 compliance. Verify that your application requirements match the specified compliance status. Extended operating temperature range (-40°C to 125°C) is available on all substitutes except the original ACTT10-800CQ, which specifies 125°C maximum.

Q: How do gate trigger parameters affect substitution?

A: Gate trigger voltage (Vgt), gate trigger current (Igt), and hold current (Ih) determine gate drive circuit compatibility. Substitutes with higher Vgt values (such as MAC212A10G at 2V) may require gate drive circuit adjustment. Verify gate drive circuit specifications before selecting parts with significantly different trigger parameters.

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