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S4004VS1
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Product Detailed Parameters
- Description：SCR 400V 4A TO251
- Series：-
- Mfr：Littelfuse Inc.
- Package：Bulk
- 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 S4004VS1 is a sensitive gate silicon controlled rectifier (SCR) manufactured by Littelfuse Inc. It features a 4A RMS on-state current and a 400V repetitive peak off-state voltage rating. The device utilizes a TO-251AA (TO-251/V-Pak/I-Pak) through-hole package with three terminals. Key electrical parameters include a maximum DC gate trigger current of 50µA, a maximum DC gate trigger voltage of 0.8V, and a holding current of 4mA. It supports a non-repetitive peak on-state current of 30A and has a circuit commutated off-time of 50µs. The component operates within a temperature range of -40°C to 110°C.
Feature Summary
- Sensitive gate architecture enabling reliable triggering with minimal gate current input
- Robust thermal performance supporting operation in high-temperature environments up to 110°C
- Through-hole mounting configuration for secure mechanical installation in power circuits
Applications
- Power control systems requiring precise gate sensitivity
- Voltage regulation circuits utilizing SCR-based topologies
- Industrial automation equipment needing reliable thyristor switching
Procurement Notes
Verify the specific suffix variant against official Littelfuse documentation to ensure compatibility with design requirements. Confirm RoHS compliance status as historical data indicates potential variations. Validate package dimensions and pinout alignment with PCB footprints prior to integration. Cross-reference datasheet revisions to account for any parameter updates or manufacturing changes that may affect long-term supply chain stability.
Selection Notes
Choose this component when low gate drive power is critical for SCR activation efficiency. Ensure the 400V voltage rating exceeds the peak circuit voltages including transients. Verify that the 4A RMS current capacity meets the continuous load requirements. Consider the TO-251 package constraints for thermal management and board space availability compared to alternative thyristor packages.
Part Context
This device belongs to Littelfuse's sensitive gate SCR family, designed for applications where standard gate currents are insufficient or undesirable. It serves as a discrete semiconductor solution for controlling AC power in various industrial and consumer electronics. The product line emphasizes reliability and ease of drive circuitry integration for power switching tasks.
Replacement Considerations
S4004VS1TP is a documented variant within the same series offering identical electrical characteristics with potential packaging or compliance differences.
