S2008VTP Equivalent & Substitute Parts

Part Overview

The S2008VTP is a 200V 8A standard recovery SCR (silicon-controlled rectifier) in TO-251 package manufactured by Littelfuse Inc. This thyristor is designed for through-hole mounting applications requiring gate-controlled switching at 200V off-state voltage. The part is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. Substitute parts maintain compatible electrical characteristics and identical mechanical packaging while offering higher voltage ratings or active product status.

Substiute Parts

S2008VTP

Littelfuse Inc.In Stock: 888S2008VTP Datasheet

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S4008VTP

LittelfuseIn Stock: 1020S4008VTP Datasheet

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S6008VTP

Littelfuse Inc.In Stock: 965S6008VTP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the S2008VTP is based on maintaining compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Gate trigger voltage (Vgt) and current (Igt) specifications must remain identical to ensure gate drive circuit compatibility
• On-state voltage drop (Vtm) and current ratings must be equivalent or superior
• Hold current (Ih) must not exceed the original specification
• Operating temperature range must encompass or match the original range

Mechanical Compatibility Criteria:

• Package type must be TO-251-3 Short Leads (IPak) for PCB mounting compatibility
• Through-hole mounting configuration must be maintained
• Lead configuration and spacing must be identical

Compliance Criteria:

• RoHS3 compliance required for modern manufacturing standards
• Moisture sensitivity level (MSL) must be acceptable for storage and handling

The S2008VTP can be substituted with higher voltage-rated SCRs (S4008VTP at 400V or S6008VTP at 600V) when the application circuit can tolerate increased off-state voltage ratings. These substitutes maintain all gate drive and on-state characteristics while providing enhanced voltage margin.

Parameter Comparison

Engineering Selection Recommendations

S4008VTP (400V Rating): Use as a direct substitute when the application circuit operates below 400V and requires an active product with current manufacturing support. This part provides a 2x voltage margin over the original S2008VTP while maintaining identical gate drive and current handling characteristics. Product status is active with ROHS3 compliance and REACH unaffected designation.

S6008VTP (600V Rating): Use as a substitute for applications requiring maximum voltage headroom or when operating in circuits with transient voltage spikes. This part provides a 3x voltage margin and maintains all electrical compatibility parameters. Product status is active with ROHS3 compliance and REACH unaffected designation.

Both substitutes are available in tube packaging and maintain the TO-251 through-hole configuration required for existing PCB designs. Selection between S4008VTP and S6008VTP depends solely on the maximum voltage the application circuit will experience.

Frequently Asked Questions (FAQ)

Q: Can S4008VTP or S6008VTP be used as direct drop-in replacements for S2008VTP?

A: Yes, both parts are direct mechanical and electrical substitutes. The TO-251 package, lead configuration, and gate drive characteristics are identical. The higher voltage ratings do not affect circuit operation in applications designed for 200V operation.

Q: What is the primary reason to choose S4008VTP over S6008VTP?

A: Selection depends on application voltage requirements. S4008VTP provides adequate voltage margin for most 200V-class circuits while S6008VTP offers additional margin for circuits with transient overvoltages. Both are functionally equivalent for gate drive and current handling.

Q: Are there any thermal or current handling differences between these parts?

A: No. All three parts maintain identical on-state voltage (1.6V max), RMS current rating (8A), and operating temperature range (-40°C to 125°C). Thermal performance and current capacity are equivalent.

Q: Why is S2008VTP obsolete while S4008VTP and S6008VTP remain active?

A: Higher voltage-rated SCRs provide greater design flexibility and are manufactured in higher volumes. The 200V rating of S2008VTP has been superseded by the more versatile 400V and 600V variants in modern product lines.

Q: Are there any compliance or certification differences?

A: All three parts are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity level). S4008VTP and S6008VTP carry REACH unaffected status, indicating no additional regulatory restrictions.

Q: What is the package compatibility consideration?

A: All parts use TO-251-3 Short Leads (IPak) through-hole configuration. PCB footprints, lead spacing, and mounting holes are identical. No PCB redesign is required.