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MF-RG300-AP-14
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Product Detailed Parameters
- Description：PTC RESETTABLE 3.0A 16V RADIAL L
- Series：Multifuse®, MF-RG
- Mfr：Bourns Inc.
- Package：Tape & Box (TB)
- Type：Polymeric
- Voltage - Max：16V
- Current - Hold (Ih) (Max)：3:00 AM
- Current - Trip (It)：5.1 A
- Current - Max：100 A
- Time to Trip：1 s
- Resistance - Initial (Ri) (Min)：38 mOhms
- Resistance - Post Trip (R1) (Max)：97.5 mOhms
- Operating Temperature：-40°C ~ 85°C
- Grade：Automotive
- Qualification：AEC-Q200
- Ratings：-
- Mounting Type：Through Hole
- Package / Case：Radial, Disc
- Size / Dimension：0.280" L x 0.118" W (7.10mm x 3.00mm)
- Height - Seated (Max)：0.433" (11.00mm)
- Thickness (Max)：-
- Lead Spacing：0.201" (5.10mm)
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Overview
The Bourns MF-RG300-AP-14 is a polymeric resettable fuse (PPTC) from the MF-RG series, designed for overcurrent protection in electronic circuits. It features a radial leaded package suitable for PCB mounting. The device maintains a holding current of 3 A and trips at 6 A. It supports a maximum voltage of 16 VDC and can handle a maximum rated current of 40 A. Typical resistance at 25°C is 50 mΩ. The component operates within a temperature range of -40°C to +85°C and has a lead spacing of 5.1 mm.
Feature Summary
- Polymeric positive temperature coefficient construction for automatic circuit recovery after fault clearance
- Radial leaded design facilitates through-hole printed circuit board integration
- High trip current capability relative to holding current for robust overload detection
Applications
- Overcurrent protection for portable electronics
- Protection of battery packs and power supply lines
- Circuit safeguarding in consumer appliances
Procurement Notes
Verify the specific AP-14 suffix against the official Bourns datasheet to confirm packaging and tape-and-reel specifications. Ensure the selected variant matches the required voltage rating of 16V and current ratings for the target application. Cross-reference the manufacturer part number with authorized distributors to guarantee authenticity and traceability of the component batch.
Selection Notes
Select this component when a low-profile, radial PTC fuse is required for 16V systems. The 3A holding current and 6A trip threshold define the operational limits. Consider the 50mΩ typical resistance for voltage drop calculations. Verify that the operating environment stays within the -40°C to +85°C range to ensure reliable performance and prevent premature tripping or failure.
Part Context
This part belongs to the Bourns MF-RG series of high-current resettable fuses. The series is characterized by compact dimensions and fast response times. The MF-RG300-AP-14 specifically denotes the 3A rating and 16V version within this family, utilizing radial leads for standard PCB assembly processes.
Replacement Considerations
Direct substitutes include other Bourns MF-RG series parts with matching electrical ratings. Verify that any replacement maintains the 16V max voltage and 3A holding current. Check physical dimensions and lead spacing compatibility before substitution.
