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MF-RX012/250-0
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Product Detailed Parameters
- Description：PTC RESET FUSE 60V 120MA RADIAL
- Series：Multifuse®, MF-RX/250
- Mfr：Bourns Inc.
- Package：Bulk
- Type：Polymeric
- Voltage - Max：60V (250V Int)
- Current - Hold (Ih) (Max)：120 mA
- Current - Trip (It)：-
- Current - Max：3:00 AM
- Time to Trip：-
- Resistance - Initial (Ri) (Min)：4 Ohms
- Resistance - Post Trip (R1) (Max)：16 Ohms
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Through Hole
- Package / Case：Radial, Disc
- Size / Dimension：0.256" L x 0.181" W (6.50mm x 4.60mm)
- Height - Seated (Max)：0.433" (11.00mm)
- Thickness (Max)：-
- Lead Spacing：0.201" (5.10mm)
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Overview
The MF-RX012/250-0 is a radial leaded polymer PTC resettable fuse from the Bourns Multifuse series. It features a hold current of 0.12 A and a trip current of 0.24 A, with a maximum voltage rating of 60 VDC. The device has a maximum resistance of 7 ohms and a rated current of 3 A. It operates within a temperature range of -40°C to +85°C and utilizes a 5.1 mm lead spacing for PCB mounting.
Feature Summary
- Provides automatic circuit protection against overcurrent faults without requiring replacement
- Polymer construction ensures high resistance during fault conditions to limit current flow
- Radial leaded package design facilitates through-hole PCB integration
Applications
- Overcurrent protection in consumer electronic equipment
- Circuit safeguarding in communication devices
- Protection for industrial transportation systems
Procurement Notes
Verify component authenticity by checking manufacturer markings and datasheet specifications. Confirm that the part number matches the required electrical parameters for your specific application. Ensure compliance with relevant safety standards such as UL or CSA approvals associated with the Multifuse series before finalizing procurement decisions.
Selection Notes
Select this component when a low hold current near 0.12 A is required for sensitive circuit protection. The 60 VDC rating suits low-voltage DC applications. Consider the radial package and 5.1 mm spacing for board layout constraints. Evaluate thermal management needs given the operating temperature limits and power dissipation characteristics inherent to PTC devices.
Part Context
This part belongs to the Bourns Multifuse MF-RX series, designed for robust overcurrent protection. The series offers various hold currents and voltage ratings to suit different circuit requirements. These resettable fuses serve as alternatives to traditional fusible links, providing reusable protection against short circuits and overloads in diverse electronic environments.
Replacement Considerations
Direct substitutes include other Bourns Multifuse parts with matching 0.12 A hold current and 60 VDC ratings, such as variants within the same MF-RX family. Verify lead spacing and package dimensions to ensure mechanical compatibility during replacement.
