S4008VS2TP Equivalent & Substitute Parts

Part Overview

The S4008VS2TP is a Sensitive Gate SCR (Silicon Controlled Rectifier) rated for 400V off-state voltage with 8A RMS on-state current capability. Manufactured by Littelfuse, this through-hole thyristor is designed for applications requiring controlled rectification and switching in industrial and power electronics circuits. The device is Active status and ROHS3 compliant, making it suitable for modern electronic equipment. Substitute parts may be required due to inventory constraints, application-specific current requirements, or design optimization for lower current applications.

Substiute Parts

S4008VS2TP

LittelfuseIn Stock: 1032S4008VS2TP Datasheet

Current PartRFQ

S4004VS2TP

Littelfuse Inc.In Stock: 2208S4004VS2TP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The S4004VS2TP qualifies as a parametric equivalent based on the following matching criteria:

Matching Parameters:

• Voltage - Off State: 400V (identical)
• Voltage - Gate Trigger (Vgt) Max: 800 mV (identical)
• Current - Gate Trigger (Igt) Max: 200 µA (identical)
• Voltage - On State (Vtm) Max: 1.6V (identical)
• Current - Hold (Ih) Max: 6 mA (identical)
• Operating Temperature Range: -40°C to 110°C (identical)
• Mounting Type: Through Hole (identical)
• Package / Case: TO-251-3 Short Leads, IPak, TO-251AA (compatible)
• SCR Type: Sensitive Gate (identical)
• RoHS Status: ROHS3 Compliant (identical)

Differentiating Parameter:

• Current - On State (It RMS) Max: 4A (S4004VS2TP) versus 8A (S4008VS2TP)

The S4004VS2TP is suitable as a substitute in applications where the required on-state current does not exceed 4A RMS, maintaining all other electrical and thermal characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both the S4008VS2TP and S4004VS2TP maintain Active product status with ROHS3 compliance and REACH unaffected designation, ensuring regulatory alignment for current and future applications. The devices share identical gate trigger characteristics, on-state voltage drop, and thermal operating range, making them functionally interchangeable from a control and switching perspective.

Selection between these parts depends solely on application current requirements. The S4008VS2TP supports continuous on-state currents up to 8A RMS, while the S4004VS2TP is rated for 4A RMS maximum. Both devices are packaged in TO-251-3 short leads configuration suitable for standard PCB through-hole assembly processes. Compliance certifications and moisture sensitivity levels are equivalent across both parts.

Frequently Asked Questions (FAQ)

Q: Can the S4004VS2TP replace the S4008VS2TP in all applications?

A: The S4004VS2TP is suitable only for applications where the required on-state current does not exceed 4A RMS. If your circuit requires currents between 4A and 8A RMS, the S4008VS2TP is the appropriate choice. All other electrical characteristics are identical.

Q: Are the package dimensions identical between these parts?

A: Both parts use the TO-251-3 short leads package configuration (IPak, TO-251AA). They are mechanically compatible for PCB mounting and layout purposes.

Q: Do both parts have the same gate trigger requirements?

A: Yes. Both the S4008VS2TP and S4004VS2TP require identical gate trigger voltage (800 mV max) and gate trigger current (200 µA max), ensuring compatible gate drive circuits.

Q: What is the temperature operating range for both devices?

A: Both parts operate across -40°C to 110°C, providing equivalent thermal performance for industrial and commercial applications.

Q: Are there compliance differences between these parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical regulatory certifications (ECCN: EAR99, HTSUS: 8541.30.0080).