S2008DS2TP Equivalent & Substitute Parts

Part Overview

The S2008DS2TP is a Sensitive Gate SCR (Silicon Controlled Rectifier) rated for 200V off-state voltage with 8A RMS current capability in a surface mount TO-252 (DPAK) package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part maintains full RoHS3 compliance and operates across the industrial temperature range of -40°C to 110°C.

Key Parameters

Parameter	Value
Voltage - Off State	200 V
Voltage - Gate Trigger (Vgt) (Max)	800 mV
Current - Gate Trigger (Igt) (Max)	200 µA
Voltage - On State (Vtm) (Max)	1.6 V
Current - On State (It (RMS)) (Max)	8 A
Current - Hold (Ih) (Max)	6 mA
Current - Off State (Max)	5 µA
SCR Type	Sensitive Gate
Operating Temperature	-40°C ~ 110°C
Mounting Type	Surface Mount
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the S2008DS2TP are qualified based on the following criteria:

Electrical Compatibility Requirements:

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): 8 A (identical)
Current - Hold (Ih) (Max): 6 mA (identical)
Current - Off State (Max): 5 µA (identical)
Operating Temperature: -40°C ~ 110°C (identical)

Mechanical Compatibility Requirements:

Mounting Type: Surface Mount (maintained)
Package / Case: TO-252-3, DPAK (2 Leads + Tab), SC-63 (identical)

Allowable Variation:

Voltage - Off State: May be rated higher than 200V (200V, 400V, or 600V ratings are acceptable for applications requiring the original 200V specification)

The S4008DS2TP and S6008DS2TP are direct substitutes with higher voltage ratings, providing design flexibility for circuits that can tolerate increased voltage headroom while maintaining identical gate drive characteristics and current ratings.

Parameter Comparison

Parameter	S2008DS2TP (Main)	S4008DS2TP (Substitute)	S6008DS2TP (Substitute)
Voltage - Off State	200 V	400 V	600 V
Voltage - Gate Trigger (Vgt) (Max)	800 mV	800 mV	800 mV
Current - Gate Trigger (Igt) (Max)	200 µA	200 µA	200 µA
Voltage - On State (Vtm) (Max)	1.6 V	1.6 V	1.6 V
Current - On State (It (RMS)) (Max)	8 A	8 A	8 A
Current - Hold (Ih) (Max)	6 mA	6 mA	6 mA
Current - Off State (Max)	5 µA	5 µA	5 µA
SCR Type	Sensitive Gate	Sensitive Gate	Sensitive Gate
Operating Temperature	-40°C ~ 110°C	-40°C ~ 110°C	-40°C ~ 110°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active

Engineering Selection Recommendations

S4008DS2TP (400V Rating): The S4008DS2TP is an active product with identical electrical and mechanical specifications to the S2008DS2TP, with the exception of a doubled off-state voltage rating (400V vs. 200V). This part is suitable for direct substitution in applications where the circuit voltage does not exceed 200V, as the higher voltage rating provides additional design margin without affecting gate drive or current handling characteristics. Product status is active with full RoHS3 compliance and REACH unaffected designation.

S6008DS2TP (600V Rating): The S6008DS2TP is an active product offering a 600V off-state voltage rating while maintaining all other electrical parameters identical to the S2008DS2TP. This part provides maximum voltage headroom for applications operating at or below 200V and is suitable for circuits requiring enhanced overvoltage protection. Product status is active with full RoHS3 compliance and REACH unaffected designation.

Both substitute parts are available in active production status, ensuring long-term supply continuity compared to the obsolete S2008DS2TP.

Frequently Asked Questions (FAQ)

Q: Can the S4008DS2TP or S6008DS2TP be used as direct replacements for the S2008DS2TP?

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

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

A: The off-state voltage rating is the only electrical parameter that differs. The S2008DS2TP is rated for 200V, the S4008DS2TP for 400V, and the S6008DS2TP for 600V. All other electrical and mechanical specifications are identical.

Q: Are there any package or pinout differences?

A: No. All three parts use the identical TO-252-3 DPAK package with 2 leads plus tab (SC-63). Pinout and PCB footprint are identical, allowing direct board-level substitution without layout modifications.

Q: What is the compliance status of the substitute parts?

A: Both S4008DS2TP and S6008DS2TP are RoHS3 compliant with MSL rating of 1 (unlimited moisture sensitivity). The S4008DS2TP and S6008DS2TP both carry REACH unaffected designation, confirming regulatory compliance for European markets.

Q: Why is the S2008DS2TP classified as obsolete?

A: The S2008DS2TP is listed as obsolete by the manufacturer. The S4008DS2TP and S6008DS2TP are active products recommended for new designs and ongoing production requirements.

Q: Can I use a higher voltage-rated part in a lower voltage application?

A: Yes. A 400V or 600V rated SCR operates correctly in circuits designed for 200V operation. The higher voltage rating does not degrade performance; it provides additional voltage margin and overvoltage protection capability.

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