FRX375-90F

Ptc Resettable Fuses Overview

The FRX375-90F is a radial leaded PTC resettable fuse from the FRX90V series, designed for circuit protection in applications up to 90 Vdc. It features a hold current (Ih) of 3.75 A and a trip current (It) of 7.5 A. The device operates within a temperature range of -40°C to 85°C. Key electrical parameters include a maximum post-trip resistance (R1) of 80 mOhms and a maximum voltage rating of 72 V operating with a 90 V interrupt rating. The component has a seated height of 3.35 mm.

Ptc Resettable Fuses Feature Summary

• Solid-state thermal protection utilizing positive temperature coefficient technology
• Radial leaded disc package suitable for through-hole mounting
• Automatic reset functionality after fault condition removal

Ptc Resettable Fuses Applications

• Overcurrent protection for low-voltage DC circuits
• Protection of portable electronic devices
• Circuit safeguarding in automotive electronics

Ptc Resettable Fuses Procurement Notes

Verify that the selected component matches the specific FRX90V series requirements for your design. Confirm that the radial lead configuration aligns with your PCB layout constraints. Ensure the operating temperature range meets your environmental specifications. Check datasheet details for soldering characteristics to guarantee reliable assembly.

Ptc Resettable Fuses Selection Notes

Choose this component when a resettable fuse is required for currents around 3.75 A. Consider the 72 V operating limit and 90 V interrupt capability for system voltage compatibility. Evaluate the 80 mOhm maximum resistance to ensure minimal impact on normal circuit operation. Assess the physical dimensions against available board space.

Ptc Resettable Fuses Part Context

This part belongs to the FRX90V series of low hold current PTC resettable fuses manufactured by Fuzetec Technology. The series is characterized by solid-state construction and radial leads, targeting applications requiring protection up to 90 Vdc. It serves as a reusable alternative to traditional one-time fuses in consumer and industrial electronics.

Ptc Resettable Fuses Replacement Considerations

Consult official manufacturer substitution guides for verified equivalents. Generic replacements may differ in hold current, trip characteristics, or physical dimensions. Verify that any substitute part maintains the same voltage ratings and package style to ensure proper fit and function.

Ptc Resettable Fuses FAQ

What is the difference between the operating voltage and interrupt voltage?

The operating voltage is 72 V, which is the maximum voltage the device can withstand during normal operation. The interrupt voltage is 90 V, representing the maximum voltage the device can safely block when tripped into a high-resistance state.

How does the FRX375-90F respond to overcurrent conditions?

When the current exceeds the trip point of 7.5 A, the device rapidly increases its resistance, limiting current flow. Once the fault is removed and the device cools down, it automatically resets to its low-resistance state.