Q2004D3TP Equivalent & Substitute Parts

Part Overview

The Q2004D3TP is a Logic - Sensitive Gate TRIAC manufactured by Littelfuse Inc., rated for 200 V off-state voltage and 4 A on-state current in a Surface Mount TO-252 (DPAK) package. This component is classified as Obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The sensitive gate configuration enables reliable triggering at low gate currents, suitable for applications requiring precise gate control in AC switching circuits.

Substiute Parts

Q2004D3TP

Littelfuse Inc.In Stock: 953Q2004D3TP Datasheet

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Q4004D3TP

Littelfuse Inc.In Stock: 1089Q4004D3TP Datasheet

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Q6004D3TP

LittelfuseIn Stock: 727Q6004D3TP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Q2004D3TP are selected based on strict electrical and mechanical compatibility criteria. The primary substitutes maintain identical or superior electrical characteristics while preserving the same physical package form factor.

Key Parameters Determining Substitution:

• Triac Type: Logic - Sensitive Gate (maintained across all substitutes)
• Current - On State (It (RMS)) (Max): 4 A (maintained)
• Voltage - Gate Trigger (Vgt) (Max): 1.3 V (maintained)
• Current - Gate Trigger (Igt) (Max): 10 mA (maintained)
• Current - Hold (Ih) (Max): 20 mA (maintained)
• Operating Temperature Range: -40°C ~ 125°C (TJ) (maintained)
• Mounting Type: Surface Mount (maintained)
• Package / Case: TO-252-3, DPAK (maintained)
• RoHS Status: ROHS3 Compliant (maintained)
• Moisture Sensitivity Level (MSL): 1 (Unlimited) (maintained)

Voltage Rating Variation:

The Q2004D3TP operates at 200 V off-state voltage. Substitute parts Q4004D3TP and Q6004D3TP feature higher voltage ratings (400 V and 600 V respectively), which are electrically compatible for applications originally designed for 200 V operation, as higher voltage-rated components function correctly in lower voltage applications.

Parameter Comparison

Engineering Selection Recommendations

Q4004D3TP (400 V Rating): This substitute is classified as Active product status, ensuring ongoing availability and manufacturing support. It maintains all electrical characteristics of the Q2004D3TP while providing a 400 V off-state voltage rating. ROHS3 compliance and MSL 1 rating are preserved. This part is suitable for direct replacement in applications where the original 200 V rating is adequate, as the higher voltage rating provides additional design margin without affecting circuit operation.

Q6004D3TP (600 V Rating): This substitute is classified as Active product status with full manufacturing support. It maintains all electrical characteristics of the Q2004D3TP while providing a 600 V off-state voltage rating. ROHS3 compliance and MSL 1 rating are preserved. This part is suitable for applications requiring enhanced voltage margin or for designs operating in higher voltage environments, while maintaining compatibility with the original 4 A current rating and sensitive gate triggering characteristics.

Both substitutes are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, matching the original part's environmental compliance profile.

Frequently Asked Questions (FAQ)

Q: Can Q4004D3TP or Q6004D3TP be used as direct replacements for Q2004D3TP?

A: Yes. Both substitutes maintain identical gate trigger voltage (1.3 V max), gate trigger current (10 mA max), hold current (20 mA max), on-state current rating (4 A), operating temperature range (-40°C to 125°C), and package form factor (TO-252 DPAK). The higher voltage ratings (400 V and 600 V) are electrically compatible with applications designed for 200 V operation.

Q: What is the difference between the three parts?

A: The primary difference is the off-state voltage rating. Q2004D3TP is rated for 200 V, Q4004D3TP for 400 V, and Q6004D3TP for 600 V. All other electrical and mechanical specifications are identical. The higher voltage ratings provide additional design margin in applications subject to voltage transients or overvoltage conditions.

Q: Are all three parts in the same package?

A: Yes. All three parts use the TO-252-3 DPAK (2 Leads + Tab) package, designated as SC-63. They are mechanically interchangeable on PCBs designed for the TO-252 footprint.

Q: What is the product status difference?

A: Q2004D3TP is classified as Obsolete, meaning it is no longer in active production. Q4004D3TP and Q6004D3TP are both classified as Active, ensuring continued availability and manufacturing support.

Q: Are there RoHS compliance differences?

A: No. All three parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, meeting identical environmental and regulatory requirements.

Q: Which substitute should be selected for new designs?

A: Selection between Q4004D3TP and Q6004D3TP depends on the application's voltage requirements. For applications operating at or below 200 V, Q4004D3TP provides adequate voltage margin. For applications with higher voltage transients or operating environments exceeding 200 V, Q6004D3TP is appropriate. Both are Active products with full manufacturing support.