Q6008R4TP TRIAC 600V 8A Equivalent & Substitute Parts

Part Overview

The Q6008R4TP is a standard TRIAC thyristor manufactured by Littelfuse, rated for 600V off-state voltage and 8A on-state current in a TO-220AB through-hole package. This component is active in production and fully compliant with RoHS3 and REACH regulations. Equivalent and substitute parts are identified based on matching or exceeding critical electrical parameters while maintaining compatible package configurations and operating temperature ranges.

Key Parameters

Parameter	Value
Voltage - Off State	600 V
Current - On State (It (RMS)) (Max)	8 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V
Current - Gate Trigger (Igt) (Max)	25 mA
Current - Hold (Ih) (Max)	50 mA
Operating Temperature	-40°C ~ 125°C (TJ)
Package / Case	TO-220-3
Mounting Type	Through Hole
Configuration	Single

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Primary Matching Criteria:

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

Secondary Compatibility Criteria:

Current - On State (It (RMS)) (Max): Equal to or greater than 8 A
Voltage - Gate Trigger (Vgt) (Max): Equal to or less than 1.3 V
Operating Temperature: -40°C ~ 125°C or higher minimum range
RoHS3 Compliance: Required

Substitute parts are grouped into two categories:

Category 1: Direct 8A Equivalents (Standard and Alternistor Types)

BTA08-600BRG (STMicroelectronics, Standard TRIAC)
BTA08-600BWRG (STMicroelectronics, Alternistor - Snubberless)
BTB08-600BWRG (STMicroelectronics, Alternistor - Snubberless)

Category 2: Higher Current Rated Substitutes (10A and 12A)

BTA10-600BWRG (STMicroelectronics, 10A, Alternistor - Snubberless)
BTA212-600B/DG,127 (NXP USA Inc., 12A, Standard TRIAC)
BTA312-600B,127 (WeEn Semiconductors, 12A, Standard TRIAC)

Parameter Comparison

Part Number	Manufacturer	Voltage - Off State	Current - On State (Max)	Voltage - Gate Trigger (Max)	Current - Gate Trigger (Max)	Current - Hold (Max)	Operating Temperature	Triac Type	Package
Q6008R4TP	Littelfuse	600 V	8 A	1.3 V	25 mA	50 mA	-40°C ~ 125°C	Standard	TO-220-3
BTA08-600BRG	STMicroelectronics	600 V	8 A	1.3 V	50 mA	50 mA	-40°C ~ 125°C	Standard	TO-220-3
BTA08-600BWRG	STMicroelectronics	600 V	8 A	1.3 V	50 mA	50 mA	-40°C ~ 125°C	Alternistor - Snubberless	TO-220-3
BTB08-600BWRG	STMicroelectronics	600 V	8 A	1.3 V	50 mA	50 mA	-40°C ~ 125°C	Alternistor - Snubberless	TO-220-3
BTA10-600BWRG	STMicroelectronics	600 V	10 A	1.3 V	50 mA	50 mA	-40°C ~ 125°C	Alternistor - Snubberless	TO-220-3
BTA212-600B/DG,127	NXP USA Inc.	600 V	12 A	1.5 V	50 mA	60 mA	-40°C ~ 125°C	Standard	TO-220-3
BTA312-600B,127	WeEn Semiconductors	600 V	12 A	1.5 V	50 mA	60 mA	-40°C ~ 125°C	Standard	TO-220-3

Engineering Selection Recommendations

Direct Substitutes (Preferred for Pin-Compatible Replacement):

BTA08-600BRG, BTA08-600BWRG, and BTB08-600BWRG are direct current-rated equivalents to the Q6008R4TP. All three maintain 600V voltage rating, 8A on-state current, and TO-220-3 package compatibility. All substitute parts are RoHS3 compliant and REACH unaffected. The primary difference is the TRIAC type: BTA08-600BRG is a standard TRIAC, while BTA08-600BWRG and BTB08-600BWRG are Alternistor - Snubberless variants. Selection between these three depends on circuit requirements for snubberless operation.

Higher Current Rated Substitutes (For Upgraded Current Capacity):

BTA10-600BWRG provides 10A on-state current while maintaining all other electrical parameters compatible with the Q6008R4TP. BTA212-600B/DG,127 and BTA312-600B,127 provide 12A on-state current. These higher-rated parts are suitable for applications requiring increased current handling capacity within the same 600V voltage class. All maintain TO-220-3 package compatibility and full compliance certifications.

All listed substitute parts are active in production status and comply with RoHS3 and REACH requirements.

Frequently Asked Questions (FAQ)

Q: Can BTA08-600BWRG directly replace Q6008R4TP in my circuit?

A: Yes. BTA08-600BWRG matches the Q6008R4TP in voltage rating (600V), on-state current (8A), gate trigger voltage (1.3V maximum), operating temperature range (-40°C ~ 125°C), and TO-220-3 package. The primary difference is the Alternistor - Snubberless technology, which may eliminate the need for external snubber circuits in certain applications.

Q: What is the difference between standard TRIAC and Alternistor - Snubberless types?

A: Both are functionally equivalent TRIACs with identical electrical ratings. Alternistor - Snubberless variants incorporate internal design features that reduce or eliminate the requirement for external snubber networks in AC switching applications. Selection depends on circuit design requirements.

Q: Can I use BTA10-600BWRG or BTA212-600B/DG,127 as substitutes?

A: Yes. Both parts exceed the current rating of the Q6008R4TP (10A and 12A respectively) while maintaining the 600V voltage rating and TO-220-3 package. Higher current-rated parts are suitable for applications requiring increased current capacity. Gate trigger voltage for BTA212-600B/DG,127 is 1.5V maximum, which is higher than the Q6008R4TP specification of 1.3V maximum.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant and REACH unaffected, matching the compliance status of the Q6008R4TP.

Q: What is the difference between BTA08-600BWRG and BTB08-600BWRG?

A: Both parts are electrically identical Alternistor - Snubberless TRIACs with 600V rating and 8A on-state current. The difference is in the base product number designation (BTA08 versus BTB08), which may reflect different manufacturing lines or product families from STMicroelectronics. Electrical performance and package compatibility are equivalent.

Q: Can I use these substitutes in applications with operating temperatures below -40°C?

A: No. All listed parts, including the Q6008R4TP, are rated for a minimum operating temperature of -40°C. Applications requiring lower temperature operation require components with extended temperature specifications.

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