S2004VS2TP Equivalent & Substitute Parts

Part Overview

The S2004VS2TP is a 200V, 4A sensitive gate SCR (Silicon Controlled Rectifier) manufactured by Littelfuse Inc., housed in a TO-251 package for through-hole mounting applications. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. The S2004VS2TP serves as a thyristor control element in power switching and regulation circuits where gate sensitivity and thermal management are critical design factors.

Substiute Parts

S2004VS2TP

Littelfuse Inc.In Stock: 869S2004VS2TP Datasheet

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S4004VS2TP

Littelfuse Inc.In Stock: 2208S4004VS2TP Datasheet

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S6004VS2TP

Littelfuse Inc.In Stock: 3941S6004VS2TP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the S2004VS2TP are qualified based on the following criteria:

Electrical Compatibility Parameters:

• SCR Type: Sensitive Gate (maintained across all substitutes)
• Gate Trigger Voltage (Vgt) Max: 800 mV (identical)
• Gate Trigger Current (Igt) Max: 200 µA (identical)
• Voltage - On State (Vtm) Max: 1.6 V (identical)
• Current - On State (It RMS) Max: 4 A (identical)
• Current - Hold (Ih) Max: 6 mA (identical)
• Current - Off State Max: 2 µA (identical)
• Current - Non Rep. Surge: 25A / 30A (identical)
• Operating Temperature Range: -40°C to 110°C (identical)

Mechanical Compatibility Parameters:

• Mounting Type: Through Hole (maintained)
• Package / Case: TO-251-3 Short Leads, IPak, TO-251AA (maintained)

Regulatory Compliance:

• RoHS Status: ROHS3 Compliant (maintained)
• Moisture Sensitivity Level: 1 (Unlimited) (maintained)

The primary distinction among substitute parts is the Voltage - Off State rating, which increases from 200V (main part) to 400V and 600V in the substitute options. This parameter variation allows for application flexibility in higher voltage circuits while maintaining identical gate control characteristics and thermal performance specifications.

Parameter Comparison

Engineering Selection Recommendations

S4004VS2TP (400V Rating): This substitute is classified as Active product status, ensuring long-term availability and supply chain continuity. It maintains identical gate control parameters and thermal specifications while providing a 2x increase in off-state voltage capability. ROHS3 compliance and REACH Unaffected status confirm regulatory alignment for current manufacturing standards.

S6004VS2TP (600V Rating): This substitute is classified as Active product status with the highest voltage rating among available options. It maintains identical gate control parameters and thermal specifications while providing a 3x increase in off-state voltage capability. ROHS3 compliance and REACH Unaffected status confirm regulatory alignment for current manufacturing standards.

Selection between S4004VS2TP and S6004VS2TP depends on circuit voltage requirements. Both substitutes are electrically and mechanically compatible with the S2004VS2TP in applications where the higher voltage rating does not create design constraints.

Frequently Asked Questions (FAQ)

Q: Can S4004VS2TP or S6004VS2TP be used as direct replacements for S2004VS2TP?

A: Yes, both substitutes are direct replacements from an electrical and mechanical standpoint. All gate control parameters, on-state characteristics, thermal ratings, and package specifications are identical. The primary difference is the off-state voltage rating, which is higher in the substitutes. This allows operation in higher voltage circuits without compromising gate sensitivity or current handling.

Q: What is the significance of the voltage rating difference?

A: The off-state voltage rating (Voltage - Off State) determines the maximum reverse voltage the SCR can withstand without conducting. The S2004VS2TP is rated for 200V, while S4004VS2TP handles 400V and S6004VS2TP handles 600V. Selection should be based on the maximum voltage your circuit will apply across the SCR in the off state.

Q: Are the gate trigger characteristics identical across all three parts?

A: Yes. The Voltage - Gate Trigger (Vgt) Max of 800 mV and Current - Gate Trigger (Igt) Max of 200 µA are identical across S2004VS2TP, S4004VS2TP, and S6004VS2TP. This ensures gate drive circuits designed for the original part will function identically with either substitute.

Q: Is the TO-251 package identical across all three parts?

A: Yes. All three parts use the TO-251-3 Short Leads package (IPak, TO-251AA) for through-hole mounting. PCB layouts and thermal management designs require no modification when substituting between these parts.

Q: What is the product status significance?

A: The S2004VS2TP is classified as Obsolete, meaning Littelfuse Inc. no longer manufactures this part. The S4004VS2TP and S6004VS2TP are both Active products, ensuring continued availability, manufacturing support, and compliance with current regulatory standards.

Q: Are there any compliance differences between the parts?

A: All three parts are ROHS3 Compliant with Moisture Sensitivity Level 1 (Unlimited). The substitutes additionally carry REACH Unaffected status, confirming compliance with current environmental regulations.