ACTT16B-800CTNJ Equivalent & Substitute Parts

Part Overview

The ACTT16B-800CTNJ is a Standard TRIAC rated for 800V off-state voltage and 16A on-state current, manufactured by WeEn Semiconductors in D2PAK surface mount packaging. This component is designed for AC switching applications requiring high voltage and moderate current handling. The part is currently Active in product status with full RoHS compliance and unlimited moisture sensitivity rating. Equivalent and substitute parts are identified to provide design flexibility, supply chain alternatives, and compatibility options for applications where the primary part may be unavailable or where specific performance characteristics align with system requirements.

Key Parameters

Parameter	Value	Unit
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
Current - Non Rep. Surge 50, 60Hz (Itsm)	140A, 150A	A
Package / Case	TO-263-3, D2PAK	—
Mounting Type	Surface Mount	—
Operating Temperature (TJ)	150	°C
RoHS Status	RoHS Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the ACTT16B-800CTNJ are identified based on the following critical parameters that determine functional compatibility:

Voltage - Off State: 800V (exact match required)
Package / Case: TO-263-3, D2PAK (mechanical and thermal compatibility)
Mounting Type: Surface Mount (PCB assembly compatibility)
Configuration: Single (functional equivalence)
Gate Trigger characteristics: Vgt and Igt within acceptable operating ranges

The substitute part T1235-800G-TR meets these core criteria. While the on-state current rating differs (12A vs. 16A), this represents a derating scenario where the substitute can operate within the same voltage class and package form factor. The substitute maintains the same off-state voltage, package type, and gate trigger voltage specification, making it suitable for applications where the lower current rating is acceptable.

Parameter Comparison

Parameter	ACTT16B-800CTNJ (Main)	T1235-800G-TR (Substitute)	Unit
Manufacturer	WeEn Semiconductors	STMicroelectronics	—
Triac Type	Standard	Alternistor - Snubberless	—
Voltage - Off State	800	800	V
Current - On State (It (RMS)) (Max)	16	12	A
Voltage - Gate Trigger (Vgt) (Max)	1	1.3	V
Current - Gate Trigger (Igt) (Max)	35	35	mA
Current - Hold (Ih) (Max)	30	35	mA
Current - Non Rep. Surge 50, 60Hz (Itsm)	140A, 150A	120A, 126A	A
Package / Case	TO-263-3, D2PAK	TO-263-3, D2PAK	—
Mounting Type	Surface Mount	Surface Mount	—
Operating Temperature (TJ)	150	-40 ~ 125	°C
RoHS Status	RoHS Compliant	ROHS3 Compliant	—
Packaging	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	—

Engineering Selection Recommendations

The ACTT16B-800CTNJ is the primary component for applications requiring 16A on-state current at 800V off-state voltage with Standard TRIAC characteristics. Both the main part and substitute are Active products with current manufacturing status and full RoHS compliance, ensuring long-term availability and regulatory conformance.

The T1235-800G-TR substitute is suitable for applications where the 12A on-state current rating is sufficient. This part offers Snubberless technology, which may provide advantages in applications sensitive to EMI or requiring reduced external snubber networks. The substitute maintains identical off-state voltage and package compatibility, enabling direct PCB layout reuse.

Selection between these parts depends on application current requirements. If the circuit demands the full 16A capability, the ACTT16B-800CTNJ is required. If the application operates at or below 12A, the T1235-800G-TR provides an alternative with different thermal and EMI characteristics due to its Snubberless design.

Frequently Asked Questions (FAQ)

Q: Can T1235-800G-TR replace ACTT16B-800CTNJ in all applications?

A: The T1235-800G-TR can replace the ACTT16B-800CTNJ only in applications where the on-state current requirement does not exceed 12A RMS. Both parts share identical 800V off-state voltage and D2PAK packaging. If your application requires the full 16A capability, the ACTT16B-800CTNJ is the correct choice.

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

A: The ACTT16B-800CTNJ is a Standard TRIAC, while the T1235-800G-TR is an Alternistor Snubberless type. Snubberless TRIACs are designed to operate without external snubber networks, potentially reducing component count and PCB area. The choice depends on application requirements for EMI performance and circuit complexity.

Q: Are both parts pin-compatible?

A: Yes, both parts use the TO-263-3 D2PAK package with identical pinout (2 Leads + Tab). They are mechanically and electrically compatible for PCB mounting and thermal management purposes.

Q: What are the packaging differences between these parts?

A: The ACTT16B-800CTNJ is supplied in Tape & Reel (TR) format, while the T1235-800G-TR is available in Cut Tape (CT) and Digi-Reel® formats. These are supply chain and handling options; the components themselves are identical in form factor.

Q: Do both parts meet current RoHS requirements?

A: Yes, the ACTT16B-800CTNJ is RoHS Compliant, and the T1235-800G-TR is ROHS3 Compliant. Both meet current environmental and regulatory standards for electronic component manufacturing.

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