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MF-RX014/250-0
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Product Detailed Parameters
- Description：PTC RESET FUSE 60V 145MA RADIAL
- Series：Multifuse®, MF-RX/250
- Mfr：Bourns Inc.
- Package：Bulk
- Type：Polymeric
- Voltage - Max：60V (250V Int)
- Current - Hold (Ih) (Max)：145 mA
- Current - Trip (It)：-
- Current - Max：3:00 AM
- Time to Trip：-
- Resistance - Initial (Ri) (Min)：3 Ohms
- Resistance - Post Trip (R1) (Max)：14 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-RX014/250-0 is a radial leaded Polymeric Positive Temperature Coefficient (PPTC) resettable fuse from the Bourns Multifuse RX series. Designed for overcurrent protection, this component features a hold current of 0.14 A and a trip current of 0.28 A. It operates with a maximum voltage rating of 60 VDC and can withstand a maximum fault current of 3 A. The device exhibits a typical initial resistance of approximately 7 ohms. It is engineered to function reliably within an ambient temperature range of -40°C to +85°C.
Feature Summary
- Provides automatic circuit interruption upon detection of overcurrent conditions to prevent damage to sensitive electronics.
- Automatically resets to a low-resistance state after the fault condition is removed and the device cools down.
- Constructed with polymeric materials that exhibit a sharp increase in resistance when heated by excessive current flow.
Applications
- Overcurrent protection for portable electronic devices and battery-powered equipment.
- Protection circuits for telecommunications infrastructure and data lines.
- Surge and overload protection for automotive electronic modules.
Procurement Notes
Verify the specific suffix codes against the official Bourns datasheet to ensure correct packaging and tape-and-reel specifications. Confirm that the radial lead style matches the target PCB footprint requirements. Cross-reference the hold and trip currents with the system's normal operating parameters to ensure proper activation thresholds are met during design validation.
Selection Notes
Select this component based on the required hold current of 0.14 A and the 60 VDC maximum voltage rating. Ensure the application environment stays within the specified -40°C to +85°C operating temperature range. Verify that the 3 A maximum fault current capability exceeds the potential short-circuit levels in the protected circuit to prevent component failure during fault events.
Part Context
This part belongs to the Bourns Multifuse RX series, which offers various hold current options in a compact radial package. The series is widely utilized for reusable overcurrent protection in consumer and industrial electronics. The '250' designation typically indicates the voltage class and physical size category within the product family.
Replacement Considerations
Consult the official Bourns replacement guide for verified cross-references. Generic PPTC fuses may not match the precise trip characteristics or recovery times. Ensure any substitute maintains the same radial lead configuration and voltage rating.
