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MF-R300-2-14
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Product Detailed Parameters
- Description：PTC RESET FUSE 30V 3A RADIAL
- Series：Multifuse®, MF-R
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：30V
- Current - Hold (Ih) (Max)：3:00 AM
- Current - Trip (It)：6:00 AM
- Current - Max：40 A
- Time to Trip：10.8 s
- Resistance - Initial (Ri) (Min)：20 mOhms
- Resistance - Post Trip (R1) (Max)：80 mOhms
- Resistance - 25°C (Typ)：-
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Through Hole
- Package / Case：Radial, Disc
- Size / Dimension：0.472" L x 0.118" W (12.00mm x 3.00mm)
- Height - Seated (Max)：0.720" (18.30mm)
- Thickness (Max)：-
- Lead Spacing：0.201" (5.10mm)
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Overview
The Bourns MF-R300-2-14 is a polymeric PTC resettable fuse rated for 30V maximum voltage and 3A hold current. It features a trip current of 6A and a maximum rated current of 40A, with a resistance of 50mΩ. The component operates between -40°C and +85°C, utilizing radial through-hole mounting with a 5.1mm lead spacing.
Feature Summary
- Provides automatic circuit protection against overcurrent conditions
- Self-resetting functionality eliminates the need for manual replacement after fault clearance
- Radial disc package design facilitates standard PCB mounting processes
Applications
- Overcurrent protection in consumer electronics circuits
- Surge protection for portable computing devices
- Circuit safeguarding in industrial control systems
Procurement Notes
Verify that the specific suffix matches project requirements, as variations exist within the series. Confirm datasheet specifications align with thermal management needs. Ensure compatibility with automated assembly equipment regarding lead spacing and package dimensions before finalizing procurement orders.
Selection Notes
Select this component when applications require robust overcurrent protection with self-resetting capabilities. Consider the 3A hold current and 30V rating to ensure adequate margin for normal operating conditions. Evaluate thermal dissipation requirements given the 50mΩ resistance during normal operation.
Part Context
This part belongs to the MF-R series of polymeric PTC resettable fuses manufactured by Bourns Inc. The series provides reliable circuit protection solutions across various electronic industries. Components in this family share common characteristics including radial construction and self-resetting behavior for sustained operational safety.
Replacement Considerations
Equivalent parts include MF-R300-2-14-99 from Bourns Inc., which shares identical electrical ratings and physical dimensions. Verify lead spacing and package type compatibility when substituting components in existing designs.
