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Product Detailed Parameters
- Description:SCR 400V 8A TO251
- Series:-
- Mfr:Littelfuse Inc.
- Package:Bulk
- Voltage - Off State:400 V
- Voltage - Gate Trigger (Vgt) (Max):1.5 V
- Current - Gate Trigger (Igt) (Max):15 mA
- Current - Hold (Ih) (Max):30 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm):83A, 100A
- SCR Type:Standard Recovery
- Operating Temperature:-40°C ~ 125°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):5.1 A
- Current - On State (It (RMS)) (Max):8:00 AM
- Current - Off State (Max):10 µA
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Overview
The Littelfuse S4008V is a silicon avalanche Zener diode designed for transient voltage suppression and overvoltage protection in electronic circuits. It features a bidirectional configuration suitable for protecting sensitive data lines and communication ports from electrostatic discharge (ESD) and lightning-induced surges. The device operates within a specified voltage range, providing reliable clamping performance while maintaining signal integrity. Its construction ensures compliance with international safety standards, including RoHS and halogen-free requirements, making it appropriate for use in telecommunications, computer peripherals, and industrial control systems where robust circuit protection is critical.
Feature Summary
- Bidirectional transient voltage suppression capability
- Compliance with RoHS and halogen-free environmental standards
- Designed to meet IEC 61000-4-2 ESD protection standards
Applications
- Telecommunications equipment port protection
- Computer peripheral interface safeguarding
- Industrial control system input/output protection
Procurement Notes
Verify the specific datasheet version and package type before ordering, as Littelfuse may update component specifications or manufacturing locations without changing the base part number. Confirm that the supplier provides original manufacturer documentation to ensure authenticity. Check for any specific handling or storage requirements related to moisture sensitivity levels if applicable to the current production batch.
Selection Notes
Select this component when bidirectional protection is required for low-voltage signal lines. Ensure the standoff voltage exceeds the maximum operating voltage of the protected circuit to prevent unnecessary conduction. Verify that the peak pulse power rating meets the expected surge energy levels in the target application environment.
Part Context
This component belongs to Littelfuse's broader portfolio of circuit protection devices, specifically within the TVS diode category. It complements other unidirectional and multi-channel arrays offered by the manufacturer, addressing different channel counts and capacitance requirements for various high-speed data interfaces.
Replacement Considerations
Consult official Littelfuse cross-reference guides for verified equivalent parts. Ensure any substitute maintains identical bidirectional characteristics, package dimensions, and electrical ratings to guarantee functional compatibility in existing designs.
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