Q2006DH4TP TRIAC Alternistor 200V 6A Equivalent & Substitute Parts

Part Overview

The Q2006DH4TP is a snubberless TRIAC Alternistor manufactured by Littelfuse Inc., rated for 200V off-state voltage and 6A on-state current in a surface mount TO-252 (DPAK) package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part maintains full RoHS3 compliance and operates across the industrial temperature range of -40°C to 125°C.

Substiute Parts

Q2006DH4TP

Littelfuse Inc.In Stock: 1078Q2006DH4TP Datasheet

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Q4006DH4TP

Littelfuse Inc.In Stock: 772Q4006DH4TP Datasheet

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Q6006DH4TP

Littelfuse Inc.In Stock: 1212Q6006DH4TP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the Q2006DH4TP is determined by the following critical parameters:

Mechanical Compatibility: All substitute parts must use the identical TO-252-3 (DPAK) surface mount package to ensure PCB footprint compatibility without layout modifications.

Electrical Compatibility: Substitute parts must maintain the same on-state current rating (6A maximum) and gate trigger characteristics (Vgt max 1.3V, Igt max 35mA, Ih max 35mA) to function within existing circuit designs.

Voltage Rating Consideration: While the Q2006DH4TP is rated for 200V off-state voltage, substitute parts with higher voltage ratings (400V or 600V) are electrically compatible and function in applications designed for 200V operation. Higher voltage ratings provide additional design margin without affecting circuit performance.

Configuration: All substitute parts maintain single configuration as Snubberless Alternistor TRIACs.

Compliance: All substitute parts maintain RoHS3 compliance and MSL 1 rating, ensuring environmental and moisture handling compatibility.

Parameter Comparison

Engineering Selection Recommendations

Q4006DH4TP (400V Rating): This part is actively manufactured and provides a direct substitute with identical on-state current (6A) and gate trigger specifications. The 400V off-state voltage rating exceeds the original 200V specification, offering increased design margin for transient voltage conditions while maintaining full electrical compatibility. RoHS3 compliance and MSL 1 rating match the original part.

Q6006DH4TP (600V Rating): This part is actively manufactured and provides a substitute with identical on-state current (6A) and gate trigger specifications. The 600V off-state voltage rating provides maximum design margin for applications with potential voltage transients. RoHS3 compliance and MSL 1 rating match the original part. This option is suitable for designs requiring the highest voltage headroom within the 6A current class.

Both substitute parts eliminate the obsolescence risk associated with the Q2006DH4TP while maintaining full electrical and mechanical compatibility with existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can Q4006DH4TP or Q6006DH4TP be used as direct replacements for Q2006DH4TP?

A: Yes. Both parts share identical on-state current (6A), gate trigger voltage (1.3V max), gate trigger current (35mA max), hold current (35mA max), and surge current ratings. The higher voltage ratings (400V and 600V) are electrically compatible with circuits designed for 200V operation and do not affect circuit performance.

Q: What is the difference between the three parts?

A: The primary difference is the off-state voltage rating: Q2006DH4TP is rated for 200V, Q4006DH4TP for 400V, and Q6006DH4TP for 600V. All other electrical and mechanical parameters are identical. The higher voltage ratings provide additional transient voltage margin.

Q: Are the packages identical?

A: Yes. All three parts use the TO-252-3 (DPAK) surface mount package with identical pinout and footprint. No PCB layout changes are required for substitution.

Q: What is the product status difference?

A: Q2006DH4TP is obsolete, while Q4006DH4TP and Q6006DH4TP are actively manufactured. For new designs or production continuity, Q4006DH4TP or Q6006DH4TP are recommended.

Q: Are compliance ratings maintained across all three parts?

A: Yes. All three parts are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, ensuring equivalent environmental and handling requirements.

Q: Which substitute should be selected for new designs?

A: Selection between Q4006DH4TP and Q6006DH4TP depends on application voltage requirements. Q4006DH4TP provides 400V margin suitable for standard AC line applications. Q6006DH4TP provides 600V margin for applications with higher transient voltage exposure. Both are actively manufactured and recommended for production use.