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S4004VS1TP
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Product Detailed Parameters
- Description：SCR 400V 4A TO251
- Series：-
- Mfr：Littelfuse Inc.
- Package：Tube
- Voltage - Off State：400 V
- Voltage - Gate Trigger (Vgt) (Max)：800 mV
- Current - Gate Trigger (Igt) (Max)：50 µA
- Current - Hold (Ih) (Max)：4 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：25A, 30A
- SCR Type：Sensitive Gate
- Operating Temperature：-40°C ~ 110°C
- Mounting Type：Through Hole
- Package / Case：TO-251-3 Short Leads, IPAK, TO-251AA
- Supplier Device Package：TO-251 (V-Pak/I-Pak)
- Voltage - On State (Vtm) (Max)：1.6 V
- Current - On State (It (AV)) (Max)：2.5 A
- Current - On State (It (RMS)) (Max)：4:00 AM
- Current - Off State (Max)：2 µA
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Overview
The S4004VS1TP is a silicon-controlled rectifier (SCR) manufactured by Littelfuse Inc., designed for sensitive gate triggering applications. It features a maximum forward blocking voltage of 400V and an on-state current rating of 4A. The device operates within a temperature range of -40°C to 110°C. Key electrical parameters include a maximum DC gate trigger current of 50µA, a holding current of 4mA, and a non-repetitive peak on-state current of 30A. It utilizes a TO-251AA (TO-251) surface-mount package with three terminals.
Feature Summary
- Sensitive gate design enabling reliable triggering with low gate current
- Robust thermal performance supporting operation up to 110°C
- High surge current capability for transient protection scenarios
Applications
- AC power control circuits
- Solid-state relay inputs
- Overvoltage protection systems
Procurement Notes
Verify the specific ordering suffix against official Littelfuse documentation to ensure correct package type and lead-free status. Confirm RoHS compliance requirements match project specifications. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and avoid counterfeit components. Ensure the selected variant matches the required voltage and current ratings for the target application.
Selection Notes
Select this component when a low-gate-current SCR is required for efficient triggering in power control designs. The 400V rating suits low-voltage AC applications. Consider the TO-251 package for surface-mount assembly constraints. Evaluate the 30A surge rating against potential inrush currents in the load circuit to ensure adequate safety margins during operation.
Part Context
This device belongs to the Littelfuse thyristor family, specifically engineered for general-purpose power switching. It complements other SCRs in the portfolio by offering a balance of high current handling and sensitive gate sensitivity. The product line supports various industrial and consumer electronics applications requiring reliable solid-state switching capabilities.
Replacement Considerations
Consult Littelfuse official substitution guides for verified alternatives. Generic replacements may differ in gate sensitivity or thermal characteristics. Verify pinout compatibility and package dimensions before integrating substitute parts into existing PCB layouts.
