Q6006RH4TP TRIAC Alternistor 600V 6A Equivalent & Substitute Parts

Part Overview

The Q6006RH4TP is a snubberless TRIAC Alternistor manufactured by Littelfuse Inc., rated for 600V off-state voltage and 6A on-state current in a TO-220AB through-hole package. This component is active in production and RoHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, supply chain considerations, or design flexibility within the same application parameters.

Key Parameters

Parameter	Q6006RH4TP
Manufacturer	Littelfuse Inc.
Voltage - Off State	600 V
Current - On State (It (RMS)) (Max)	6 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V
Current - Gate Trigger (Igt) (Max)	35 mA
Current - Hold (Ih) (Max)	35 mA
Current - Non Rep. Surge 50, 60Hz (Itsm)	80A, 85A
Triac Type	Alternistor - Snubberless
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:

MFR Recommended Substitutes maintain the 600V off-state voltage rating and TO-220-3 through-hole package. These parts are approved alternatives with verified electrical compatibility:

BT138-600,127 and BT138-600E,127: Standard and Logic-Sensitive Gate variants rated 12A on-state current, exceeding the 6A requirement
BTA08-600CWRG and BTB08-600CWRG: Alternistor-Snubberless variants rated 8A on-state current
BTA10-600CWRG: Alternistor-Snubberless variant rated 10A on-state current
T835H-6I and T835H-6T: Alternistor-Snubberless variants rated 8A on-state current with extended temperature range to 150°C

Parametric Equivalent Substitutes match the 600V voltage and 6A current rating with identical gate trigger specifications:

BTA06-600CWRG and BTA06T-600CWRG: Direct parametric equivalents rated 6A on-state current, maintaining Alternistor-Snubberless topology

All substitutes maintain 600V off-state voltage, TO-220-3 package configuration, through-hole mounting, RoHS3 compliance, and single configuration.

Parameter Comparison

Part Number	Manufacturer	Voltage - Off State	Current - On State (It (RMS)) (Max)	Voltage - Gate Trigger (Vgt) (Max)	Current - Gate Trigger (Igt) (Max)	Current - Hold (Ih) (Max)	Triac Type	Operating Temperature	Package / Case
Q6006RH4TP	Littelfuse Inc.	600 V	6 A	1.3 V	35 mA	35 mA	Alternistor - Snubberless	-40°C ~ 125°C	TO-220-3
BT138-600,127	WeEn Semiconductors	600 V	12 A	1.5 V	35 mA	30 mA	Standard	-40°C ~ 125°C	TO-220-3
BT138-600E,127	WeEn Semiconductors	600 V	12 A	1.5 V	10 mA	30 mA	Logic - Sensitive Gate	-40°C ~ 125°C	TO-220-3
BTA08-600CWRG	STMicroelectronics	600 V	8 A	1.3 V	35 mA	35 mA	Alternistor - Snubberless	-40°C ~ 125°C	TO-220-3
BTA10-600CWRG	STMicroelectronics	600 V	10 A	1.3 V	35 mA	35 mA	Alternistor - Snubberless	-40°C ~ 125°C	TO-220-3
BTB08-600CWRG	STMicroelectronics	600 V	8 A	1.3 V	35 mA	35 mA	Alternistor - Snubberless	-40°C ~ 125°C	TO-220-3
T835H-6I	STMicroelectronics	600 V	8 A	1 V	35 mA	35 mA	Alternistor - Snubberless	-40°C ~ 150°C	TO-220-3
T835H-6T	STMicroelectronics	600 V	8 A	1 V	35 mA	35 mA	Alternistor - Snubberless	-40°C ~ 150°C	TO-220-3
BTA06-600CWRG	STMicroelectronics	600 V	6 A	1.3 V	35 mA	35 mA	Alternistor - Snubberless	-40°C ~ 125°C	TO-220-3
BTA06T-600CWRG	STMicroelectronics	600 V	6 A	1.3 V	35 mA	35 mA	Alternistor - Snubberless	-40°C ~ 125°C	TO-220-3

Engineering Selection Recommendations

All listed substitute parts maintain active product status and RoHS3 compliance, meeting regulatory requirements equivalent to the Q6006RH4TP.

Parametric Equivalent Selection: BTA06-600CWRG and BTA06T-600CWRG provide direct electrical equivalence with identical 6A on-state current, 1.3V gate trigger voltage, and Alternistor-Snubberless topology. BTA06T-600CWRG includes insulated TO-220AB packaging for applications requiring isolation.

Higher Current Capacity Selection: BTA08-600CWRG, BTB08-600CWRG, BTA10-600CWRG, T835H-6I, and T835H-6T provide increased on-state current ratings (8A to 10A) while maintaining 600V voltage rating and identical gate trigger characteristics. These are suitable for applications with current margin requirements.

Extended Temperature Range Selection: T835H-6I and T835H-6T extend operating temperature to 150°C, compared to 125°C for the Q6006RH4TP, for high-temperature applications.

Standard TRIAC Selection: BT138-600,127 and BT138-600E,127 provide 12A on-state current with Standard and Logic-Sensitive Gate variants respectively. BT138-600E,127 features reduced gate trigger current (10mA) for logic-level gate drive applications.

Frequently Asked Questions (FAQ)

Q: Can BTA06-600CWRG directly replace Q6006RH4TP?

A: Yes. BTA06-600CWRG is a parametric equivalent with matching 600V off-state voltage, 6A on-state current, 1.3V gate trigger voltage, and Alternistor-Snubberless topology. Both use TO-220-3 through-hole packages and operate across -40°C to 125°C.

Q: What is the difference between BTA06-600CWRG and BTA06T-600CWRG?

A: Both share identical electrical specifications. BTA06T-600CWRG uses insulated TO-220AB packaging, providing electrical isolation between the tab and the die, whereas BTA06-600CWRG uses standard TO-220 packaging. Selection depends on isolation requirements in the application.

Q: Can I use BTA08-600CWRG or BTA10-600CWRG as substitutes?

A: Yes. These parts maintain 600V voltage rating, identical gate trigger specifications (1.3V Vgt, 35mA Igt), and Alternistor-Snubberless topology. Higher current ratings (8A and 10A respectively) provide design margin for applications with variable load conditions.

Q: What is the advantage of T835H-6I or T835H-6T?

A: Both extend operating temperature to 150°C compared to 125°C for the Q6006RH4TP, and feature reduced gate trigger voltage (1V vs. 1.3V). These are suitable for high-temperature environments or applications requiring lower gate drive power.

Q: When should I use BT138-600,127 or BT138-600E,127?

A: These Standard and Logic-Sensitive Gate variants provide 12A on-state current for applications requiring higher current capacity. BT138-600E,127 features 10mA gate trigger current, suitable for direct logic-level gate drive without additional buffering.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts maintain RoHS3 compliance equivalent to the Q6006RH4TP.

Q: Do all substitutes use the same TO-220-3 package?

A: All substitutes use TO-220-3 through-hole packages. BTA06T-600CWRG specifies TO-220AB Insulated variant. Verify specific package variant requirements for your application's PCB layout and isolation needs.

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