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MF-RX025/72-AP
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Product Detailed Parameters
- Description：PTC RESET FUSE 72V 250MA RADIAL
- Series：MF-RX/72
- Mfr：Bourns Inc.
- Package：Tape & Box (TB)
- Type：-
- Voltage - Max：72V
- Current - Hold (Ih) (Max)：250 mA
- Current - Trip (It)：500 mA
- Current - Max：40 A
- Time to Trip：2.5 s
- Resistance - Initial (Ri) (Min)：-
- Resistance - Post Trip (R1) (Max)：-
- Operating Temperature：-
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Through Hole
- Package / Case：Radial, Disc
- Size / Dimension：0.291" Dia x 0.122" W (7.40mm x 3.10mm)
- Height - Seated (Max)：0.500" (12.70mm)
- Thickness (Max)：-
- Lead Spacing：0.201" (5.10mm)
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Overview
The Bourns MF-RX025/72-AP is a radial leaded PPTC resettable fuse from the Multifuse MF-RX/72 series. It features a hold current of 250 mA and a trip current of 500 mA, with a maximum voltage rating of 72 VDC. The device has a resistance of 1.95 Ohms and a power dissipation of 450 mW. It operates within a temperature range of -40°C to +85°C. Physical dimensions include a diameter of 7.4 mm, height of 12.7 mm, and length of 7.4 mm, with a lead spacing of 5.1 mm.
Feature Summary
- Provides overcurrent protection using polymer positive temperature coefficient technology.
- Designed for robust performance in high-voltage and high-temperature environments.
- Eliminates tripping caused by ambient temperature variations.
Applications
- Automotive circuit protection
- High-reliability electronic equipment surge protection
- Industrial transportation systems
- Communication and security systems
Procurement Notes
Verify component authenticity through authorized Bourns distributors or direct channels. Confirm RoHS compliance status via official documentation. Ensure ordering suffixes match specific packaging requirements. Cross-reference datasheet revisions to validate electrical parameters against current production batches before integration into design specifications.
Selection Notes
Select this component when a 250 mA hold current and 72 VDC maximum voltage are required for radial PCB mounting. Consider the 1.95 Ohm resistance and 450 mW power dissipation limits for thermal management. Evaluate the -40°C to +85°C operating range against environmental conditions. Compare physical dimensions against available board space constraints.
Part Context
This part belongs to the Multifuse MF-RX/72 series, designed for general-purpose circuit protection. It utilizes a 125°C polymer PTC element to offer cost-effective overcurrent protection. The series targets applications requiring reliable fault protection without manual reset, distinguishing it from traditional fusible links.
Replacement Considerations
MF-RX030/72-0 offers higher current capacity (300 mA hold) but shares similar voltage ratings and package style. Verify that increased trip current and lower resistance values align with target circuit protection thresholds before substitution.
