QJ8025RH5TP Equivalent & Substitute Parts

Part Overview

The QJ8025RH5TP is an Alternistor-class snubberless TRIAC manufactured by Littelfuse Inc., rated for 800 V off-state voltage and 25 A on-state current in a Through Hole TO-220AB package. This component is Active in product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified to provide equivalent electrical performance and mechanical compatibility for applications requiring 800 V / 25 A TRIAC functionality in standard TO-220 mounting configurations.

Key Parameters

Parameter	Value
Voltage - Off State	800 V
Current - On State (It (RMS)) (Max)	25 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V
Current - Gate Trigger (Igt) (Max)	50 mA
Current - Hold (Ih) (Max)	50 mA
Operating Temperature Range	-40°C ~ 150°C (TJ)
Mounting Type	Through Hole
Package / Case	TO-220-3
Configuration	Single
Triac Type	Alternistor - Snubberless

Substitute Part Grouping Explanation

Substitution eligibility for the QJ8025RH5TP is determined by the following critical parameters:

Off-state voltage rating: 800 V minimum
On-state current rating: 25 A minimum
Gate trigger voltage: 1.3 V maximum
Gate trigger current: 50 mA maximum
Hold current: 50 mA maximum
Triac type classification: Alternistor - Snubberless
Package configuration: TO-220-3 Through Hole
Single configuration requirement

Both identified substitute parts—BTA24-800CWRG and BTB24-800CWRG from STMicroelectronics—meet all critical electrical parameters and package requirements. Both are manufactured as Snubberless™ Alternistor TRIACs with identical voltage and current ratings, gate trigger specifications, and TO-220-3 Through Hole mounting.

Parameter Comparison

Parameter	QJ8025RH5TP (Littelfuse)	BTA24-800CWRG (STMicroelectronics)	BTB24-800CWRG (STMicroelectronics)
Voltage - Off State	800 V	800 V	800 V
Current - On State (It (RMS)) (Max)	25 A	25 A	25 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V	1.3 V	1.3 V
Current - Gate Trigger (Igt) (Max)	50 mA	35 mA	35 mA
Current - Hold (Ih) (Max)	50 mA	50 mA	50 mA
Current - Non Rep. Surge 50, 60Hz (Itsm)	208A, 250A	250A, 260A	250A, 260A
Operating Temperature Range	-40°C ~ 150°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	TO-220-3	TO-220-3	TO-220-3
Triac Type	Alternistor - Snubberless	Alternistor - Snubberless	Alternistor - Snubberless
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Active	Active	Active

Engineering Selection Recommendations

Both BTA24-800CWRG and BTB24-800CWRG are qualified substitutes for the QJ8025RH5TP based on electrical parameter equivalence and mechanical compatibility. All three parts maintain Active product status with full RoHS3 compliance and REACH unaffected designation, ensuring regulatory continuity in applications.

The STMicroelectronics substitutes demonstrate lower gate trigger current specifications (35 mA versus 50 mA), which represents improved gate sensitivity. The substitute parts specify a reduced maximum operating temperature of 125°C compared to the QJ8025RH5TP at 150°C; applications requiring operation above 125°C junction temperature must retain the original Littelfuse part.

Both substitute parts are available in higher inventory quantities (2500 and 2200 units respectively) compared to the original part (855 units), supporting supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can BTA24-800CWRG and BTB24-800CWRG be used interchangeably with QJ8025RH5TP?

A: Yes, both STMicroelectronics parts meet the critical electrical specifications: 800 V off-state voltage, 25 A on-state current, 1.3 V maximum gate trigger voltage, and TO-220-3 Through Hole package configuration. Both are Alternistor-class snubberless TRIACs with identical functional classification.

Q: What is the difference between BTA24-800CWRG and BTB24-800CWRG?

A: Both parts are electrically identical in all provided specifications. The designation difference (BTA versus BTB) reflects internal STMicroelectronics product line classification but does not affect electrical performance or substitution suitability for this application.

Q: Are there temperature limitations when substituting?

A: The QJ8025RH5TP operates to 150°C junction temperature, while both STMicroelectronics substitutes are rated to 125°C maximum. Applications requiring sustained operation above 125°C junction temperature must use the original Littelfuse part.

Q: Do the substitute parts have the same package footprint?

A: Yes. All three parts use TO-220-3 Through Hole package configuration with identical mechanical dimensions and pin assignments, ensuring direct PCB compatibility without layout modification.

Q: Are compliance certifications maintained with substitution?

A: Yes. All three parts carry identical RoHS3 compliance and REACH unaffected status, maintaining regulatory requirements across substitution.

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