QJ6025RH6TP TRIAC Alternistor 600V 25A Equivalent & Substitute Parts

Part Overview

The QJ6025RH6TP is a snubberless TRIAC alternistor manufactured by Littelfuse Inc., rated for 600V off-state voltage and 25A on-state current in a TO-220AB through-hole package. This component is classified as Active product status and is ROHS3 compliant. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical compatibility, and thermal operating ranges to ensure functional interchangeability in AC switching applications.

Key Parameters

Parameter	Value
Voltage - Off State	600 V
Current - On State (It (RMS)) (Max)	25 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V
Current - Gate Trigger (Igt) (Max)	80 mA
Current - Hold (Ih) (Max)	100 mA
Operating Temperature Range	-40°C ~ 150°C (TJ)
Package / Case	TO-220-3
Mounting Type	Through Hole
Configuration	Single

Substitute Part Grouping Explanation

Substitute parts for the QJ6025RH6TP are grouped based on the following electrical and mechanical criteria:

Primary Substitution Criteria:

Voltage - Off State: 600 V (exact match required)
Package / Case: TO-220-3 (mechanical compatibility)
Mounting Type: Through Hole (installation compatibility)
Configuration: Single (functional equivalence)

Secondary Compatibility Parameters:

Current - On State (It (RMS)) (Max): 25 A or higher
Voltage - Gate Trigger (Vgt) (Max): 1.3 V or lower
Current - Gate Trigger (Igt) (Max): 80 mA or lower
Current - Hold (Ih) (Max): 100 mA or lower
Operating Temperature Range: Must support -40°C minimum and 150°C maximum or equivalent thermal envelope

Parts meeting these criteria are classified as direct substitutes. Parts with higher current ratings (30 A) are classified as upgrades suitable for applications requiring increased current capacity while maintaining voltage and package compatibility.

Parameter Comparison

Parameter	QJ6025RH6TP (Main)	BTA24-600BWRG	BTB24-600BRG	T3050H-6I	T3050H-6T
Manufacturer	Littelfuse Inc.	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Triac Type	Alternistor - Snubberless	Alternistor - Snubberless	Standard	Alternistor - Snubberless	Alternistor - Snubberless
Voltage - Off State	600 V	600 V	600 V	600 V	600 V
Current - On State (It (RMS)) (Max)	25 A	25 A	25 A	30 A	30 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V	1.3 V	1.3 V	1 V	1 V
Current - Gate Trigger (Igt) (Max)	80 mA	50 mA	50 mA	50 mA	50 mA
Current - Hold (Ih) (Max)	100 mA	75 mA	80 mA	75 mA	75 mA
Current - Non Rep. Surge 50, 60Hz (Itsm)	208A, 250A	250A, 260A	250A, 260A	270A, 284A	270A, 284A
Operating Temperature Range	-40°C ~ 150°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 150°C (TJ)	-40°C ~ 150°C (TJ)
Package / Case	TO-220-3	TO-220-3	TO-220-3	TO-220-3	TO-220-3
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Substitutes (Equivalent Current Rating):

BTA24-600BWRG and BTB24-600BRG are suitable direct substitutes for applications where the QJ6025RH6TP is specified. Both parts maintain 600V voltage rating, 25A current rating, and TO-220-3 package compatibility. BTA24-600BWRG is classified as an alternistor-snubberless type matching the main part's topology. BTB24-600BRG is classified as a standard TRIAC type, introducing different gate characteristics but maintaining electrical compatibility within the specified parameter ranges. Both substitute parts operate at a reduced maximum junction temperature of 125°C compared to the main part's 150°C rating; applications requiring the full 150°C thermal envelope should verify thermal margin requirements.

Upgrade Substitutes (Higher Current Rating):

T3050H-6I and T3050H-6T are upgrade substitutes rated for 30A on-state current while maintaining 600V voltage rating and TO-220-3 package compatibility. Both parts are classified as alternistor-snubberless types and support the full -40°C to 150°C operating temperature range. These parts are suitable for applications requiring increased current capacity beyond the 25A specification of the main part. Gate trigger voltage is reduced to 1V maximum, providing improved gate sensitivity compared to the main part's 1.3V specification.

All substitute parts listed are Active product status and ROHS3 compliant, meeting regulatory and environmental requirements equivalent to the main part.

Frequently Asked Questions (FAQ)

Q: Can BTA24-600BWRG directly replace QJ6025RH6TP in existing designs?

A: BTA24-600BWRG is electrically compatible as a direct substitute. Both parts share 600V voltage rating, 25A current rating, 1.3V maximum gate trigger voltage, and TO-220-3 package configuration. The primary design consideration is the reduced maximum junction temperature of 125°C versus 150°C for the main part. Verify that thermal dissipation in the application does not require operation above 125°C junction temperature.

Q: What is the difference between BTB24-600BRG and BTA24-600BWRG?

A: Both parts maintain identical electrical ratings of 600V and 25A. The primary difference is TRIAC type classification: BTA24-600BWRG is an alternistor-snubberless type, while BTB24-600BRG is a standard TRIAC type. Both are compatible substitutes for the QJ6025RH6TP. Standard TRIAC types may exhibit different gate drive characteristics and switching behavior compared to snubberless alternistor types; circuit validation is recommended if gate drive circuits are optimized for snubberless operation.

Q: When should T3050H-6I or T3050H-6T be selected instead of direct substitutes?

A: T3050H-6I and T3050H-6T are upgrade options when the application requires current capacity exceeding 25A. Both parts are rated for 30A on-state current while maintaining 600V voltage compatibility and TO-220-3 package form factor. These parts support the full -40°C to 150°C operating temperature range and feature reduced gate trigger voltage of 1V, providing improved gate sensitivity. Select these parts only when increased current capacity is required; oversizing current rating in applications with fixed load requirements does not provide additional benefit.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. QJ6025RH6TP, BTA24-600BWRG, BTB24-600BRG, T3050H-6I, and T3050H-6T are all ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). All parts are REACH unaffected and classified under ECCN EAR99.

Q: What is the impact of different gate trigger current specifications?

A: The main part QJ6025RH6TP specifies 80mA maximum gate trigger current, while all substitute parts specify 50mA maximum. Lower gate trigger current indicates improved gate sensitivity and reduced gate drive power requirements. Applications with gate drive circuits designed for 80mA operation will function with substitute parts rated at 50mA; however, gate drive margin is increased, potentially improving circuit reliability. No circuit modification is required for this parameter difference.

Q: Can substitute parts be mixed in the same application?

A: All listed substitute parts are mechanically and electrically compatible for TO-220-3 through-hole mounting. However, mixing different TRIAC types (snubberless alternistor versus standard) in the same circuit may introduce inconsistent gate drive behavior. For applications requiring multiple devices, maintain consistent part selection to ensure uniform switching characteristics and gate drive performance.

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