Equivalent & Substitute Parts for S2008DS3TP (Littelfuse Inc.)

Part Overview

Manufacturer part number S2008DS3TP by Littelfuse Inc. is an SCR (Silicon Controlled Rectifier), featured in the Thyristors category. This device offers sensitive gate characteristics, a 200 V off-state voltage, 8 A RMS on-state current, and is provided in a TO-252-3 (DPAK) surface mount package. The product is listed as Obsolete, making identification of compatible substitute parts mandatory for continued production and support in electronic designs requiring identical electrical, thermal, and mechanical compliance.

Key Parameters

Parameter	S2008DS3TP
Category	Thyristors
SCR Type	Sensitive Gate
Voltage - Off State	200 V
Current - On State (It (RMS)) (Max)	8 A
Current - Hold (Ih) (Max)	8 mA
Voltage - Gate Trigger (Vgt) (Max)	800 mV
Current - Gate Trigger (Igt) (Max)	500 µA
Voltage - On State (Vtm) (Max)	1.6 V
Current - Off State (Max)	5 µA
Current - Non Rep. Surge 50, 60Hz (Itsm)	83A, 100A
Operating Temperature	-40°C ~ 110°C
Mounting Type	Surface Mount
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63
Supplier Device Package	TO-252 (DPAK)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
ECCN	EAR99
HTSUS	8541.30.0080
Part Status	Obsolete

Substitute Part Grouping Explanation

Substitute selection for S2008DS3TP is based strictly on matching key parameters identified in the Thyristors category:

SCR Type (Sensitive Gate)
Voltage - Off State (Minimum must meet or exceed 200 V)
Current - On State (It (RMS)) (Max)
Package / Case (TO-252-3, DPAK, SC-63)
Gate trigger and hold characteristics
Compliance status (RoHS, MSL, ECCN)

Parts S4008DS3TP and S6008DS3TP from Littelfuse Inc. conform to these electrical and mechanical criteria, providing identical form factor and compliant ratings with upgrade voltages in the off-state. These strictly defined parameters permit substitution within electronic assemblies originally specified for S2008DS3TP.

Parameter Comparison

Parameter	S2008DS3TP	S4008DS3TP	S6008DS3TP
Category	Thyristors	Thyristors	Thyristors
SCR Type	Sensitive Gate	Sensitive Gate	Sensitive Gate
Voltage - Off State	200 V	400 V	600 V
Current - On State (It (RMS)) (Max)	8 A	8 A	8 A
Voltage - Gate Trigger (Vgt) (Max)	800 mV	800 mV	800 mV
Current - Gate Trigger (Igt) (Max)	500 µA	500 µA	500 µA
Voltage - On State (Vtm) (Max)	1.6 V	1.6 V	1.6 V
Current - Hold (Ih) (Max)	8 mA	8 mA	8 mA
Current - Off State (Max)	5 µA	5 µA	5 µA
Current - Non Rep. Surge 50, 60Hz (Itsm)	83A, 100A	83A, 100A	83A, 100A
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 (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63
Supplier Device Package	TO-252 (DPAK)	TO-252 (DPAK)	TO-252 (DPAK)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99	EAR99
HTSUS	8541.30.0080	8541.30.0080	8541.30.0080

Engineering Selection Recommendations

S2008DS3TP is classified as Obsolete, while S4008DS3TP and S6008DS3TP are Active. All substitute parts possess ROHS3 compliance, Moisture Sensitivity Level 1 (Unlimited), and ECCN EAR99 classification. These compliance parameters enable selection as direct substitutes in designs requiring the same regulatory and supply chain status.

Frequently Asked Questions (FAQ)

Q1: What criteria are used for substitute selection in the SCR Thyristor category?
Substitute parts are selected strictly based on SCR type, off-state voltage meeting or exceeding the original device, identical RMS on-state current, matching package and mounting type, and equivalent compliance certifications.

Q2: Are S4008DS3TP and S6008DS3TP electrically and mechanically compatible with S2008DS3TP?
All substitute devices listed share identical SCR type, current ratings, gate characteristics, package, and compliance. The only electrical difference is the upgraded off-state voltage.

Q3: Does the package footprint differ among main and substitute models?
No. Package / Case and Supplier Device Package are identical: TO-252-3, DPAK (2 Leads + Tab), SC-63.

Q4: Is compliance status (RoHS, MSL, ECCN) the same for main and substitute SCRs?
Yes. All parts are ROHS3 Compliant, MSL 1, and ECCN EAR99.

Q5: Why is substitution necessary for S2008DS3TP?
S2008DS3TP is designated Obsolete in inventory and supply status, requiring substitute part selection for current and future applications.

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