LSP380

Ptc Resettable Fuses Overview

The Littelfuse LSP380 is a surface-mount Transient Voltage Suppression (TVS) diode designed to protect sensitive semiconductor components and electronic circuits from transient voltage surges, electrostatic discharge (ESD), and electrical fast transients (EFT). This device is available in subminiature packages compatible with lead-free soldering processes. It offers peak pulse power ratings ranging from 200 W to 4 kW at 10/1000µs, with breakdown voltages up to 682 V and peak pulse currents reaching 326 A at 10x1000µs. The component features response times below 1 ms and meets IEC 6100-4-2 standards for ESD protection of up to 30 kV through air and contact.

Ptc Resettable Fuses Feature Summary

• Provides robust clamping capabilities against transient overvoltages
• Features low inductance for high-speed signal line protection
• Includes versions that fail open rather than short circuit for enhanced safety
• Utilizes space-saving, low-profile surface-mount packages

Ptc Resettable Fuses Applications

• Protection of data ports and communication interfaces
• Surge protection inside cable connectors
• Overvoltage protection for semiconductors on printed circuit boards
• Electrostatic discharge (ESD) mitigation in consumer electronics

Ptc Resettable Fuses Procurement Notes

Verify the specific part number suffix to confirm the exact standoff voltage, package type, and directionality (uni-directional or bi-directional) required for your design. Ensure the selected variant meets the necessary agency approvals such as UL recognition and RoHS compliance. Cross-reference the thermal resistance and power derating curves with your application's operating temperature range to guarantee reliable performance under stress conditions.

Ptc Resettable Fuses Selection Notes

Select the LSP380 variant based on the system's maximum operating voltage and the expected surge energy levels. Consider the package size constraints and the need for low inductance in high-frequency applications. Evaluate whether uni-directional or bi-directional protection is needed based on the signal polarity. Verify that the breakdown voltage exceeds the maximum continuous operating voltage while maintaining adequate clamping limits for downstream components.

Ptc Resettable Fuses Part Context

The LSP380 belongs to Littelfuse’s broad portfolio of surface-mount TVS diodes engineered for compact electronic designs. These devices are part of a family offering various power ratings and voltage ranges to suit diverse circuit protection needs. The series is characterized by its ability to handle significant transient energy in small form factors, making it suitable for modern, densely populated PCBs where space is limited but reliability is critical.

Ptc Resettable Fuses Replacement Considerations

Consult official Littelfuse substitution guides for verified equivalent part numbers within the same product family. Ensure any substitute matches the original specifications for voltage ratings, current handling, and package dimensions. Generic cross-references should be avoided unless explicitly confirmed by manufacturer documentation to prevent compatibility issues.