MF-R135-AP-17

Overview

The Bourns MF-R135-AP-17 is a radial leaded PTC resettable fuse designed for overcurrent protection in automotive and industrial circuits. It features a hold current of 1.35A and a trip current of 2.0A, with a maximum voltage rating of 30VDC. The device exhibits an initial resistance (Ri) minimum of 65 mOhms and a post-trip resistance (R1) maximum of 170 mOhms. It withstands a maximum surge current of 40A and trips within 7.3 seconds under specified conditions. Operating temperature ranges from -40°C to 85°C, ensuring reliability in demanding environments.

Feature Summary

• Self-resetting positive temperature coefficient technology provides automatic circuit recovery after fault clearance without manual intervention.
• Automotive-grade AEC-Q200 qualification ensures robust performance and durability in high-vibration and extreme temperature vehicle applications.
• Radial leaded disc package facilitates easy through-hole mounting on printed circuit boards for compact design integration.

Applications

• Automotive electronic control units and sensor circuits
• Battery management systems in electric vehicles
• Industrial power supply input protection
• Consumer electronics charging ports

Procurement Notes

Verify the specific suffix AP-17 corresponds to the tape-and-box packaging configuration as defined in the official Bourns datasheet. Confirm that the AEC-Q200 certification status aligns with your quality management system requirements. Ensure the operating temperature range of -40°C to 85°C meets your environmental specifications. Cross-reference the lead spacing of 5.10mm with your PCB footprint design to guarantee mechanical compatibility during assembly.

Selection Notes

Select this component when designing circuits requiring resettable overcurrent protection with a 1.35A hold current and 30VDC maximum voltage. Consider its low initial resistance for minimal power loss in normal operation. Evaluate the 40A surge capability against potential inrush currents in your application. Ensure the radial through-hole form factor fits your manufacturing process and board layout constraints compared to surface-mount alternatives.

Part Context

This part belongs to the Bourns Multifuse MF-R series of PTC resettable fuses. These devices utilize proprietary polymer technology to provide reliable overcurrent protection. The series is widely recognized for its consistency and repeatability in protecting sensitive electronic components from damage due to short circuits or overloads across various industries.

Replacement Considerations

Direct substitutes include other MF-R series variants with matching electrical ratings, such as MF-R135-99, provided the packaging difference between tape-and-box and bulk does not impact your assembly line. Verify that any alternative maintains the same AEC-Q200 qualification if automotive compliance is mandatory. Check for identical lead spacing and thermal characteristics to ensure seamless integration.