ACTT16-800CTNQ Equivalent & Substitute Parts

Part Overview

The ACTT16-800CTNQ is a standard TRIAC thyristor manufactured by WeEn Semiconductors, rated for 800V off-state voltage and 16A on-state current in a TO-220AB through-hole package. This component is actively produced and RoHS compliant, serving as a primary switching element in AC power control applications. Equivalent and substitute parts are identified based on matching electrical ratings, thermal characteristics, and mechanical compatibility to ensure functional interchangeability in circuit designs.

Key Parameters

Parameter	Value
Voltage - Off State	800 V
Current - On State (It (RMS)) (Max)	16 A
Voltage - Gate Trigger (Vgt) (Max)	1 V
Current - Gate Trigger (Igt) (Max)	35 mA
Current - Hold (Ih) (Max)	30 mA
Operating Temperature (TJ)	150°C
Package / Case	TO-220-3
Mounting Type	Through Hole
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Primary Matching Parameters:

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

Secondary Compatibility Parameters:

Current - On State (It (RMS)): 16 A or higher acceptable
Voltage - Gate Trigger (Vgt): Within specified maximum ratings
Current - Gate Trigger (Igt): Within specified maximum ratings
Operating Temperature: Minimum 150°C junction temperature

Substitute parts are grouped into two categories: Standard TRIACs matching the 16A current rating and Alternistor Snubberless variants with equivalent or superior electrical characteristics. All identified substitutes maintain 800V voltage rating and TO-220 package compatibility.

Parameter Comparison

Part Number	Manufacturer	Triac Type	Voltage - Off State (V)	Current - On State (A)	Vgt (Max) (V)	Igt (Max) (mA)	Ih (Max) (mA)	Operating Temp (°C)	Package
ACTT16-800CTNQ	WeEn Semiconductors	Standard	800	16	1	35	30	150	TO-220AB
T1635T-8T	STMicroelectronics	Alternistor - Snubberless	800	16	1.3	35	40	150	TO-220
T1625T-8I	STMicroelectronics	Standard	800	16	1.3	25	35	150	TO-220AB Insulated
BTA12-800CWRG	STMicroelectronics	Alternistor - Snubberless	800	12	1.3	35	35	125	TO-220AB Insulated
BTB12-800CWRG	STMicroelectronics	Alternistor - Snubberless	800	12	1.3	35	35	125	TO-220
MAC15A10G	Littelfuse Inc.	Standard	800	15	2	50	40	125	TO-220AB
MAC15NG	Littelfuse Inc.	Standard	800	15	1.5	35	40	125	TO-220AB

Engineering Selection Recommendations

Direct Equivalents (16A Rating): T1635T-8T and T1625T-8I are functionally equivalent to ACTT16-800CTNQ with identical 16A current ratings and 800V voltage specifications. T1635T-8T offers Snubberless technology with improved EMI characteristics. T1625T-8I maintains standard TRIAC characteristics with insulated packaging. Both are ROHS3 compliant and rated to 150°C junction temperature, matching the thermal capability of the primary part.

Reduced Current Alternatives (12A-15A Rating): BTA12-800CWRG, BTB12-800CWRG, MAC15A10G, and MAC15NG provide substitution for applications where current requirements do not exceed their respective ratings. MAC15NG offers the closest parameter alignment with 15A current rating and 1.5V gate trigger voltage. BTA12-800CWRG and BTB12-800CWRG feature Snubberless technology but are limited to 12A and 125°C maximum junction temperature. These alternatives are suitable only when circuit design permits reduced current capacity.

All substitute parts maintain RoHS compliance and are actively produced with confirmed inventory availability.

Frequently Asked Questions (FAQ)

Q: Can BTA12-800CWRG or BTB12-800CWRG replace ACTT16-800CTNQ in all applications? A: No. These parts are rated for 12A maximum on-state current compared to 16A for ACTT16-800CTNQ. Substitution is valid only if the application circuit operates at 12A or below. Additionally, maximum junction temperature is 125°C versus 150°C for the primary part.

Q: What is the difference between T1635T-8T and T1625T-8I? A: T1635T-8T is an Alternistor Snubberless variant with enhanced EMI suppression characteristics. T1625T-8I is a standard TRIAC with insulated packaging. Both are rated 16A at 800V and 150°C junction temperature. Selection depends on whether snubberless EMI filtering is required in the application.

Q: Are MAC15A10G and MAC15NG interchangeable? A: Both are 15A, 800V standard TRIACs in TO-220AB packages from Littelfuse. MAC15NG has lower gate trigger voltage (1.5V vs 2V) and lower gate trigger current (35mA vs 50mA), making it more sensitive to gate drive signals. They are mechanically compatible but have different trigger characteristics.

Q: Does package designation TO-220AB versus TO-220 affect substitution? A: TO-220AB and TO-220 are mechanically compatible through-hole packages with identical pin spacing and mounting requirements. The designation difference reflects supplier packaging variations. Substitution between these package types is valid for PCB assembly purposes.

Q: What compliance certifications apply to all substitute parts? A: All identified substitute parts are RoHS compliant. STMicroelectronics parts carry ROHS3 certification. Littelfuse parts carry ROHS3 certification and REACH Unaffected status. All parts are classified under ECCN EAR99 and HTSUS 8541.30.0080.

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