S2008VS3TP Equivalent & Substitute Parts

Part Overview

The S2008VS3TP is a Sensitive Gate SCR (Silicon Controlled Rectifier) rated for 200V off-state voltage with 8A RMS current capability in a TO-251 through-hole package. This component is classified as obsolete, making identification of suitable alternatives essential for ongoing production and maintenance applications. The part's sensitive gate characteristics and compact packaging make it suitable for low-to-medium voltage switching and control circuits.

Key Parameters

Parameter	Value
Voltage - Off State	200 V
Current - On State (It RMS)	8 A
Voltage - Gate Trigger (Vgt) Max	800 mV
Current - Gate Trigger (Igt) Max	500 µA
Voltage - On State (Vtm) Max	1.6 V
SCR Type	Sensitive Gate
Package / Case	TO-251-3 Short Leads, IPak
Mounting Type	Through Hole
Operating Temperature Range	-40°C to 110°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the S2008VS3TP is determined by the following critical parameters:

Off-State Voltage Rating: The substitute must meet or exceed the 200V requirement
RMS Current Capability: The substitute must support the 8A RMS current specification
Gate Trigger Characteristics: Vgt and Igt parameters must remain within compatible ranges for circuit operation
On-State Voltage: Vtm must be compatible with system voltage drop requirements
Package and Mounting: TO-251 through-hole configuration must be maintained for PCB compatibility
SCR Type: Sensitive Gate classification must be preserved
Temperature Range: Operating range must cover -40°C to 110°C
Compliance: RoHS3 compliance is required

The S6008VS3TP qualifies as a direct substitute based on these parameters. While it features a higher 600V off-state voltage rating, this represents an upgrade that maintains full compatibility with the original circuit requirements while providing enhanced voltage margin.

Parameter Comparison

Parameter	S2008VS3TP (Main)	S6008VS3TP (Substitute)
Manufacturer	Littelfuse	Littelfuse Inc.
Category	Thyristors	Thyristors
Voltage - Off State	200 V	600 V
Voltage - Gate Trigger (Vgt) Max	800 mV	800 mV
Current - Gate Trigger (Igt) Max	500 µA	500 µA
Voltage - On State (Vtm) Max	1.6 V	1.6 V
Current - On State (It RMS) Max	8 A	8 A
Current - Hold (Ih) Max	8 mA	8 mA
Current - Off State Max	5 µA	5 µA
Current - Non Rep. Surge (50/60Hz)	83A / 100A	83A / 100A
SCR Type	Sensitive Gate	Sensitive Gate
Operating Temperature	-40°C to 110°C	-40°C to 110°C
Mounting Type	Through Hole	Through Hole
Package / Case	TO-251-3 Short Leads, IPak, TO-251AA	TO-251-3 Short Leads, IPak, TO-251AA
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active

Engineering Selection Recommendations

The S6008VS3TP is the qualified substitute for the obsolete S2008VS3TP. Selection is based on the following engineering criteria:

Product Status: The S2008VS3TP is obsolete, while the S6008VS3TP maintains active production status, ensuring long-term availability and supply chain continuity.

Electrical Compatibility: All gate trigger parameters (Vgt, Igt), on-state voltage (Vtm), hold current (Ih), and off-state leakage current remain identical. The 600V off-state voltage rating of the S6008VS3TP exceeds the original 200V specification, providing enhanced voltage margin without compromising circuit operation.

Mechanical Compatibility: Both components share identical TO-251 through-hole packaging, enabling direct PCB footprint compatibility without layout modifications.

Compliance: The S6008VS3TP maintains ROHS3 compliance and equivalent regulatory classification (ECCN: EAR99, HTSUS: 8541.30.0080), meeting the same environmental and export requirements as the original part.

Current Capability: RMS current rating of 8A and surge current specifications (83A/100A at 50/60Hz) are preserved, maintaining thermal and transient performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can the S6008VS3TP be used as a direct replacement for the S2008VS3TP?

A: Yes. The S6008VS3TP is electrically and mechanically compatible. All gate trigger parameters, on-state characteristics, and current ratings are identical. The higher voltage rating (600V vs. 200V) represents an upgrade that maintains full backward compatibility.

Q: What is the primary difference between these two parts?

A: The off-state voltage rating differs: S2008VS3TP is rated for 200V, while S6008VS3TP is rated for 600V. All other electrical parameters remain unchanged. This makes the S6008VS3TP suitable for applications requiring higher voltage margin.

Q: Are there any PCB layout changes required when substituting the S6008VS3TP?

A: No. Both components use identical TO-251 through-hole packaging with the same lead configuration and spacing. No PCB modifications are necessary.

Q: Does the S6008VS3TP meet the same compliance requirements?

A: Yes. The S6008VS3TP maintains ROHS3 compliance and carries the same regulatory classifications (ECCN: EAR99, HTSUS: 8541.30.0080) as the original S2008VS3TP.

Q: Why is the S2008VS3TP classified as obsolete?

A: The S2008VS3TP has reached end-of-life status. The S6008VS3TP is the active production equivalent that provides superior voltage rating while maintaining all other performance characteristics.

Q: What is the operating temperature range for the S6008VS3TP?

A: The operating temperature range is -40°C to 110°C, identical to the S2008VS3TP.

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