Q6008RH3TP TRIAC Alternistor 600V 8A Equivalent & Substitute Parts

Part Overview

The Q6008RH3TP is an active Littelfuse Inc. TRIAC Alternistor rated for 600V off-state voltage and 8A on-state current in a TO-220 through-hole package. This snubberless design operates across -40°C to 125°C and is ROHS3 compliant. Equivalent and substitute parts are identified based on matching electrical ratings, thermal characteristics, and mechanical compatibility to support component sourcing flexibility and supply chain continuity.

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)	10 mA
Current - Hold (Ih) (Max)	15 mA
Operating Temperature	-40°C ~ 125°C (TJ)
Package / Case	TO-220-3
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Direct Equivalents (8A Rating): Parts maintaining 600V off-state voltage, 8A on-state current, 1.3V maximum gate trigger voltage, 10mA maximum gate trigger current, 15mA maximum hold current, TO-220-3 package, and -40°C to 125°C operating temperature range qualify as direct substitutes. These include BTA08-600SWRG, BTB08-600SRG, and BTB08-600SWRG from STMicroelectronics, which differ only in TRIAC type (Logic - Sensitive Gate vs. Alternistor - Snubberless) while maintaining identical electrical performance parameters.

Upgraded Substitutes (12A Rating): Parts with increased on-state current ratings (12A) and higher surge current capabilities (BTA212-600D,127 and T1220T-6I) are classified as upgrades. These maintain 600V off-state voltage and TO-220-3 package compatibility but exceed the original 8A specification, providing enhanced current handling capacity for applications requiring higher current margins.

Parameter Comparison

Part Number	Manufacturer	Triac Type	Voltage - Off State	Current - On State (Max)	Vgt (Max)	Igt (Max)	Ih (Max)	Operating Temp	Package	RoHS Status
Q6008RH3TP	Littelfuse Inc.	Alternistor - Snubberless	600 V	8 A	1.3 V	10 mA	15 mA	-40°C ~ 125°C	TO-220-3	ROHS3
BTA08-600SWRG	STMicroelectronics	Logic - Sensitive Gate	600 V	8 A	1.3 V	10 mA	15 mA	-40°C ~ 125°C	TO-220-3	ROHS3
BTB08-600SRG	STMicroelectronics	Logic - Sensitive Gate	600 V	8 A	1.3 V	10 mA	15 mA	-40°C ~ 125°C	TO-220-3	ROHS3
BTB08-600SWRG	STMicroelectronics	Logic - Sensitive Gate	600 V	8 A	1.3 V	10 mA	15 mA	-40°C ~ 125°C	TO-220-3	ROHS3
BTA212-600D,127	WeEn Semiconductors	Logic - Sensitive Gate	600 V	12 A	1.5 V	5 mA	15 mA	-40°C ~ 125°C	TO-220-3	ROHS3
T1220T-6I	STMicroelectronics	Alternistor - Snubberless	600 V	12 A	1.3 V	20 mA	15 mA	-40°C ~ 125°C	TO-220-3	ROHS3

Engineering Selection Recommendations

All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements equivalent to the Q6008RH3TP. Direct equivalents (BTA08-600SWRG, BTB08-600SRG, BTB08-600SWRG) are suitable for one-to-one replacement in applications requiring 8A on-state current with 600V blocking capability. These parts differ only in internal TRIAC architecture (Logic - Sensitive Gate vs. Alternistor - Snubberless) while delivering identical electrical performance across all specified parameters.

Upgraded substitutes (BTA212-600D,127 and T1220T-6I) provide increased on-state current ratings of 12A and enhanced surge current handling. BTA212-600D,127 features reduced gate trigger current (5mA vs. 10mA), while T1220T-6I maintains the Alternistor architecture with higher gate trigger current (20mA). These upgrades are applicable in designs where increased current margin or higher surge capacity is beneficial within the 600V voltage class and TO-220 package constraint.

Frequently Asked Questions (FAQ)

Q: Can BTA08-600SWRG, BTB08-600SRG, and BTB08-600SWRG be used interchangeably with Q6008RH3TP?

A: Yes. All three STMicroelectronics parts maintain identical electrical specifications: 600V off-state voltage, 8A on-state current, 1.3V maximum gate trigger voltage, 10mA maximum gate trigger current, 15mA maximum hold current, and -40°C to 125°C operating range. The difference between Alternistor and Logic - Sensitive Gate architectures does not affect electrical parameter compatibility. All are packaged in TO-220-3 and ROHS3 compliant.

Q: What is the difference between direct equivalents and upgraded substitutes?

A: Direct equivalents (8A parts) match the Q6008RH3TP current rating exactly. Upgraded substitutes (BTA212-600D,127 and T1220T-6I) increase on-state current to 12A, providing higher current capacity. Both categories maintain 600V blocking voltage and TO-220-3 package compatibility. Upgraded parts are suitable when circuit design permits higher current ratings or when increased surge current handling is required.

Q: Are all substitute parts available in the same TO-220 package?

A: Yes. All substitute parts use TO-220-3 package configuration. BTA212-600D,127 is supplied as TO-220AB, and T1220T-6I is supplied as TO-220AB Insulated. These variants maintain mechanical and thermal compatibility with standard TO-220-3 mounting and heatsinking requirements.

Q: Do substitute parts meet the same compliance standards as Q6008RH3TP?

A: Yes. All substitute parts are ROHS3 compliant, REACH unaffected, and carry EAR99 ECCN classification identical to the Q6008RH3TP. Moisture sensitivity level is 1 (Unlimited) across all parts.

Q: Which substitute should be selected for cost optimization?

A: Selection depends on supply availability and application requirements. Direct equivalents (BTA08-600SWRG, BTB08-600SRG, BTB08-600SWRG) provide identical performance at potentially lower cost. Upgraded parts (BTA212-600D,127, T1220T-6I) justify selection only when increased current capacity or surge handling is specified in circuit design.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message