ACTT8-800C0Q TRIAC 800V 8A Equivalent & Substitute Parts

Part Overview

The ACTT8-800C0Q is a standard TRIAC thyristor manufactured by WeEn Semiconductors, rated for 800V off-state voltage and 8A on-state current in a TO-220AB through-hole package. This component is in active product status with 769 units currently in stock. Equivalent and substitute parts are identified based on matching electrical specifications and mechanical compatibility within the TO-220-3 package family, enabling direct replacement in applications requiring 800V/8A TRIAC functionality.

Key Parameters

Parameter	ACTT8-800C0Q
Voltage - Off State	800 V
Current - On State (It (RMS)) (Max)	8 A
Voltage - Gate Trigger (Vgt) (Max)	1 V
Current - Gate Trigger (Igt) (Max)	30 mA
Current - Hold (Ih) (Max)	35 mA
Current - Non Rep. Surge 50, 60Hz (Itsm)	80A, 88A
Operating Temperature (TJ)	125°C
Package / Case	TO-220-3
Mounting Type	Through Hole
Triac Type	Standard

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Voltage - Off State: Must equal 800V
Package / Case: Must be TO-220-3 (TO-220AB supplier package)
Mounting Type: Must be Through Hole
Current - On State (It (RMS)): Acceptable range 8A to 12A (equal or higher rating)
Triac Type: Standard or Alternistor - Snubberless types are functionally compatible
Operating Temperature: Must support minimum 125°C junction temperature
Configuration: Must be Single

Substitute parts are grouped into two categories: direct current-matched equivalents (8A rating) and higher-current alternatives (10A-12A rating) that provide enhanced current handling capability while maintaining voltage and package compatibility.

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)	Operating Temperature (TJ)	Triac Type	Package / Case
ACTT8-800C0Q	WeEn Semiconductors	800 V	8 A	1 V	30 mA	35 mA	125°C	Standard	TO-220-3
BTA08-800CW3G	onsemi	800 V	8 A	1.1 V	35 mA	35 mA	-40°C ~ 125°C	Standard	TO-220-3
MAC8NG	Littelfuse Inc.	800 V	8 A	1.5 V	35 mA	40 mA	-40°C ~ 125°C	Standard	TO-220-3
Q8008RH4TP	Littelfuse Inc.	800 V	8 A	1.3 V	35 mA	35 mA	-40°C ~ 125°C	Alternistor - Snubberless	TO-220-3
BTA10-800CWRG	STMicroelectronics	800 V	10 A	1.3 V	35 mA	35 mA	-40°C ~ 125°C	Alternistor - Snubberless	TO-220-3
2N6349AG	Littelfuse Inc.	800 V	12 A	2 V	50 mA	40 mA	-40°C ~ 125°C	Standard	TO-220-3
MAC12NG	Littelfuse Inc.	800 V	12 A	1.5 V	35 mA	40 mA	-40°C ~ 125°C	Standard	TO-220-3
T1235T-8T	STMicroelectronics	800 V	12 A	1.3 V	35 mA	40 mA	-40°C ~ 150°C	Alternistor - Snubberless	TO-220-3
Q8006RH4TP	Littelfuse Inc.	800 V	6 A	1.3 V	35 mA	35 mA	-40°C ~ 125°C	Alternistor - Snubberless	TO-220-3

Engineering Selection Recommendations

Direct Current-Matched Equivalents (8A Rating)

BTA08-800CW3G (onsemi) and MAC8NG (Littelfuse Inc.) provide identical 8A current ratings with matching 800V voltage specifications. Both are ROHS3 compliant and support extended operating temperature ranges (-40°C to 125°C). BTA08-800CW3G offers the closest gate trigger voltage specification at 1.1V. MAC8NG provides REACH compliance documentation.

Q8008RH4TP (Littelfuse Inc.) is an Alternistor - Snubberless variant with 8A rating and 1.3V gate trigger voltage. This part type includes integrated snubber functionality, reducing external component requirements in certain circuit topologies.

Higher-Current Alternatives (10A-12A Rating)

BTA10-800CWRG (STMicroelectronics) provides 10A current capacity with Alternistor - Snubberless technology and extended temperature range to 150°C. This part accommodates applications requiring additional current margin.

MAC12NG and 2N6349AG (both Littelfuse Inc.) offer 12A current ratings. MAC12NG maintains lower gate trigger voltage (1.5V) and is ROHS3/REACH compliant. 2N6349AG provides higher inventory availability (4700 units) but specifies 2V gate trigger voltage and 50mA gate trigger current.

T1235T-8T (STMicroelectronics) is an Alternistor - Snubberless variant rated for 12A with the highest operating temperature specification (150°C) and ROHS3/REACH compliance.

Lower-Current Alternative

Q8006RH4TP (Littelfuse Inc.) is rated for 6A and is suitable only for applications where the 8A requirement can be reduced. This part is an Alternistor - Snubberless type with ROHS3/REACH compliance.

Frequently Asked Questions (FAQ)

Q: Can I use a 12A TRIAC as a substitute for the 8A ACTT8-800C0Q?

A: Yes. Higher current-rated TRIACs (10A-12A) are functionally compatible substitutes provided they maintain 800V off-state voltage, TO-220-3 package, and through-hole mounting. The higher current rating provides additional design margin without affecting circuit operation at 8A load levels.

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

A: Both types are functionally compatible for substitution purposes. Alternistor - Snubberless variants incorporate integrated snubber networks, reducing external component count in certain applications. Standard types require external snubber circuits where needed. Selection depends on circuit topology requirements, not substitution eligibility.

Q: Are there any restrictions on using parts with different gate trigger voltage specifications?

A: Gate trigger voltage (Vgt) variations within the provided range (1V to 2V maximum) do not prevent substitution. Circuit gate drive design must accommodate the specified Vgt of the selected part. Parts with lower Vgt (1V-1.3V) require less gate current for triggering; parts with higher Vgt (1.5V-2V) require proportionally more gate drive.

Q: Can I substitute the ACTT8-800C0Q with Q8006RH4TP (6A rating)?

A: No. Q8006RH4TP is rated for 6A maximum on-state current, which is below the 8A requirement of the ACTT8-800C0Q. This part is suitable only for applications designed for 6A operation.

Q: What compliance certifications are relevant for substitution?

A: ROHS3 and REACH compliance status are provided for reference. All listed substitute parts maintain ECCN EAR99 and HTSUS 8541.30.0080 classifications matching the main part. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for all parts, indicating no moisture handling restrictions.

Q: Does operating temperature range affect substitution eligibility?

A: The ACTT8-800C0Q specifies 125°C maximum junction temperature. Substitute parts with extended temperature ranges (-40°C to 125°C or higher) are fully compatible. Parts must support minimum 125°C operation; lower maximum temperature specifications are not acceptable substitutes.

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

A: Yes. TO-220AB is the supplier device package designation for TO-220-3 case style. All listed parts use this package family and are mechanically and electrically interchangeable in TO-220-3 footprints.

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