Q2004V3TP Equivalent & Substitute Parts

Part Overview

The Q2004V3TP is a Logic - Sensitive Gate TRIAC rated for 200 V off-state voltage with 4 A on-state current, manufactured by Littelfuse Inc. in a TO-251 through-hole package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Substitute TRIACs in this family maintain identical gate trigger characteristics and current ratings while offering higher voltage ratings for enhanced circuit protection margins.

Key Parameters

Parameter	Value
Manufacturer Part Number	Q2004V3TP
Manufacturer	Littelfuse Inc.
Category	Thyristors
Triac Type	Logic - Sensitive Gate
Voltage - Off State	200 V
Current - On State (It (RMS)) (Max)	4 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V
Current - Gate Trigger (Igt) (Max)	10 mA
Current - Hold (Ih) (Max)	20 mA
Operating Temperature	-40°C ~ 125°C (TJ)
Mounting Type	Through Hole
Package / Case	TO-251-3 Short Leads, IPak, TO-251AA
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the Q2004V3TP are selected based on strict electrical and mechanical compatibility criteria. The following parameters must remain constant across all substitutes:

Triac Type: Logic - Sensitive Gate
Current - On State (It (RMS)) (Max): 4 A
Voltage - Gate Trigger (Vgt) (Max): 1.3 V
Current - Gate Trigger (Igt) (Max): 10 mA
Current - Hold (Ih) (Max): 20 mA
Operating Temperature: -40°C ~ 125°C (TJ)
Mounting Type: Through Hole
Package / Case: TO-251-3 Short Leads, IPak, TO-251AA
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts differ only in Voltage - Off State rating, which may be equal to or greater than the original specification. This allows for direct pin-compatible replacement in applications where higher voltage margins are acceptable or required.

Parameter Comparison

Parameter	Q2004V3TP	Q4004V3TP	Q6004V3TP
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Littelfuse
Triac Type	Logic - Sensitive Gate	Logic - Sensitive Gate	Logic - Sensitive Gate
Voltage - Off State	200 V	400 V	600 V
Current - On State (It (RMS)) (Max)	4 A	4 A	4 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V	1.3 V	1.3 V
Current - Non Rep. Surge 50, 60Hz (Itsm)	46A, 55A	46A, 55A	46A, 55A
Current - Gate Trigger (Igt) (Max)	10 mA	10 mA	10 mA
Current - Hold (Ih) (Max)	20 mA	20 mA	20 mA
Operating Temperature	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	TO-251-3 Short Leads, IPak, TO-251AA	TO-251-3 Short Leads, IPak, TO-251AA	TO-251-3 Short Leads, IPak, TO-251AA
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

The Q2004V3TP is obsolete; therefore, substitute parts must be selected from active product lines. Both Q4004V3TP and Q6004V3TP are active products manufactured by Littelfuse Inc. and maintain full ROHS3 compliance and identical MSL ratings.

Q4004V3TP provides a 400 V off-state voltage rating, doubling the original specification while maintaining all other electrical and mechanical parameters. This part is suitable for direct replacement in applications where the circuit topology permits higher voltage margins.

Q6004V3TP provides a 600 V off-state voltage rating, tripling the original specification. This part is suitable for applications requiring maximum voltage protection or where circuit design allows for higher voltage-rated components without performance degradation.

Both substitute parts are pin-compatible with the original Q2004V3TP and require no circuit modifications for installation in TO-251 through-hole mounting positions.

Frequently Asked Questions (FAQ)

Q: Can Q4004V3TP or Q6004V3TP be used as direct replacements for Q2004V3TP?

A: Yes. Both substitute parts are pin-compatible and maintain identical gate trigger voltage, gate trigger current, hold current, on-state current, operating temperature range, and package configuration. The higher off-state voltage ratings do not affect circuit operation in applications designed for 200 V operation.

Q: What is the primary difference between the substitute parts?

A: The Q4004V3TP and Q6004V3TP differ only in off-state voltage rating: 400 V and 600 V respectively, compared to the original 200 V rating. All other electrical and mechanical specifications remain identical.

Q: Are there any compliance or certification differences between the parts?

A: No. All three parts maintain ROHS3 compliance, MSL Level 1 (Unlimited), and identical ECCN and HTSUS classifications.

Q: Which substitute should be selected for new designs?

A: Q6004V3TP is recommended for new designs as it offers the highest voltage margin and is an active product with full manufacturing support. Q4004V3TP is suitable where 400 V rating is sufficient for the application requirements.

Q: Are packaging and mounting considerations identical across all three parts?

A: Yes. All parts use TO-251-3 Short Leads (IPak, TO-251AA) through-hole packaging with identical pin configuration and mounting requirements.

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