ACTT8B-800CTNJ TRIAC Equivalent & Substitute Parts

Part Overview

The ACTT8B-800CTNJ is a Standard TRIAC rated for 800V off-state voltage and 8A on-state current, manufactured by WeEn Semiconductors in Surface Mount D2PAK packaging. This component is Active in product status and widely used in AC switching and control applications requiring high voltage gate-controlled switching capability. Substitute parts are identified when equivalent electrical ratings and mechanical compatibility are maintained across the specified parameter set.

Key Parameters

Parameter	Value	Unit
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)	35	mA
Current - Hold (Ih) (Max)	40	mA
Package / Case	TO-263-3, D2PAK	-
Mounting Type	Surface Mount	-
Operating Temperature (TJ)	150	°C

Substitute Part Grouping Explanation

Substitute parts for the ACTT8B-800CTNJ are qualified based on the following criteria:

Electrical Parameter Equivalence:

Off-state voltage rating of 800V
On-state current rating of 8A (RMS maximum)
Gate trigger voltage (Vgt) maximum of 1V
Package and mounting type compatibility with TO-263-3 D2PAK Surface Mount

Mechanical Compatibility:

Identical package designation: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
Surface Mount configuration for PCB assembly compatibility

Product Status:

Active status ensuring continued availability and support

The ACST830-8GTR from STMicroelectronics meets these substitution criteria with matching electrical ratings and identical mechanical packaging.

Parameter Comparison

Parameter	ACTT8B-800CTNJ (WeEn)	ACST830-8GTR (STMicroelectronics)	Unit
Voltage - Off State	800	800	V
Current - On State (It (RMS)) (Max)	8	8	A
Voltage - Gate Trigger (Vgt) (Max)	1	1	V
Current - Gate Trigger (Igt) (Max)	35	30	mA
Current - Hold (Ih) (Max)	40	30	mA
Current - Non Rep. Surge 50, 60Hz (Itsm)	80A, 88A	80A, 84A	A
Package / Case	TO-263-3, D2PAK	TO-263-3, D2PAK	-
Mounting Type	Surface Mount	Surface Mount	-
Product Status	Active	Active	-
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	-

Engineering Selection Recommendations

Both the ACTT8B-800CTNJ and ACST830-8GTR are Active products with identical off-state voltage and on-state current ratings. The ACST830-8GTR carries RoHS3 compliance and REACH Unaffected status, providing additional regulatory alignment for applications requiring these certifications. The gate trigger current (Igt) and hold current (Ih) specifications are lower on the ACST830-8GTR, which may provide improved gate sensitivity in control circuits. Both components share identical packaging and mounting specifications, ensuring direct PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can the ACST830-8GTR directly replace the ACTT8B-800CTNJ in existing designs?

A: Yes. Both parts share identical off-state voltage (800V), on-state current (8A), gate trigger voltage (1V maximum), and D2PAK Surface Mount packaging. Direct substitution is electrically and mechanically compatible.

Q: What are the key differences between these two TRIAC models?

A: The primary differences are gate trigger current (Igt) and hold current (Ih) specifications. The ACST830-8GTR has lower maximum values (30mA vs. 35mA for Igt; 30mA vs. 40mA for Ih), indicating improved gate sensitivity. The ACST830-8GTR also includes RoHS3 compliance certification.

Q: Are there packaging or lead configuration differences?

A: No. Both components use identical TO-263-3 D2PAK packaging with 2 leads plus tab configuration. PCB footprints and assembly processes are interchangeable.

Q: What is the operating temperature range for each part?

A: The ACTT8B-800CTNJ operates to a junction temperature (TJ) of 150°C. The ACST830-8GTR specifies an operating temperature range of -40°C to 125°C (TJ). Application thermal requirements should be evaluated against these specifications.

Q: Do both parts have the same moisture sensitivity rating?

A: Yes. Both the ACTT8B-800CTNJ and ACST830-8GTR carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage and handling.

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