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MF-USML270-2
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Product Detailed Parameters
- Description：PTC RESET FUSE 6V 2.7A 1210
- Series：Multifuse®, MF-USML
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR),Bulk
- Type：Polymeric
- Voltage - Max：6V
- Current - Hold (Ih) (Max)：2.7 A
- Current - Trip (It)：5.4 A
- Current - Max：50 A
- Time to Trip：4 s
- Resistance - Initial (Ri) (Min)：4 mOhms
- Resistance - Post Trip (R1) (Max)：20 mOhms
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：1210 (3225 Metric), Concave
- Size / Dimension：0.127" L x 0.102" W (3.22mm x 2.58mm)
- Height - Seated (Max)：-
- Thickness (Max)：0.024" (0.60mm)
- Lead Spacing：-
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Overview
The Bourns MF-USML270-2 is a surface-mount polymer positive temperature coefficient (PPTC) resettable fuse from the USML series. It provides overcurrent protection in compact SMD packages suitable for space-constrained layouts. The device maintains circuit integrity under normal operating conditions and trips to a high-resistance state during fault events, automatically resetting upon power removal and cooling. It is designed for robust performance in harsh environments involving high voltage and elevated temperatures.
Feature Summary
- Polymer PTC technology ensures automatic recovery after fault clearance without manual intervention.
- Compact surface-mount package design facilitates automated assembly and efficient PCB layout.
- High-temperature capability supports operation in demanding thermal environments.
Applications
- Automotive circuit protection
- Portable electronic devices
- Industrial equipment surge protection
Procurement Notes
Verify the specific hold current and trip characteristics against the official datasheet before procurement. Confirm that the component meets all required safety agency certifications for the target market. Ensure the selected variant matches the precise voltage and current ratings of the application circuit to guarantee reliable protection performance.
Selection Notes
Select this component based on the required hold current and maximum operating voltage for the specific circuit. Consider the physical footprint constraints when choosing between available series options. Evaluate the thermal environment to ensure the device's high-temperature rating aligns with the system's operational limits and derating requirements.
Part Context
This part belongs to the Multifuse USML series, which expands Bourns' portfolio of high-temperature PPTC resettable fuses. The series offers various hold current options in standardized surface-mount footprints, providing designers with flexible solutions for overcurrent protection across diverse electronic applications requiring compact form factors.
