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MF-RX375/72-0-14
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Product Detailed Parameters
- Description：FUSE PTC RESETTABLE
- Series：MF-RX/72
- Mfr：Bourns Inc.
- Package：Bulk
- Type：-
- Voltage - Max：72V
- Current - Hold (Ih) (Max)：3.75 A
- Current - Trip (It)：7.5 A
- Current - Max：40 A
- Time to Trip：24 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：1.118" L x 0.122" W (28.40mm x 3.10mm)
- Height - Seated (Max)：1.319" (33.50mm)
- Thickness (Max)：-
- Lead Spacing：0.402" (10.20mm)
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Overview
The Bourns MF-RX375/72-0-14 is a radial leaded PPTC resettable fuse from the Multifuse MF-RX/72 series. It features a 3.75 A hold current and a 7.5 A trip current, rated for a maximum voltage of 72 VDC. The device has a maximum interrupt rating of 40 A and an initial resistance of 50 mOhms. It operates within a temperature range of -40°C to +85°C with a 10.2 mm lead spacing. Physical dimensions are 23.51 mm in length and 3.1 mm in height.
Feature Summary
- Provides overcurrent protection through automatic circuit interruption upon excessive heat generation.
- Automatically resets to a low-resistance state once fault conditions clear and the component cools down.
- Designed for PCB mounting using a radial leaded termination style.
Applications
- Overcurrent protection for automotive electronic circuits
- Surge protection for high-reliability industrial equipment
- Circuit safeguarding in communication systems
Procurement Notes
Verify the specific ordering suffix against official Bourns documentation to confirm lead configuration and packaging details. Ensure the selected variant matches the required hold current and voltage ratings for the target application. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm availability and compliance with RoHS standards before finalizing procurement orders.
Selection Notes
Select this component based on the 3.75 A hold current requirement and 72 VDC maximum voltage limit. Confirm that the 10.2 mm lead spacing fits the printed circuit board layout constraints. Evaluate the thermal environment to ensure operation remains within the specified -40°C to +85°C range. Verify that the 50 mOhms resistance meets the circuit's power dissipation requirements.
Part Context
This component belongs to the Bourns Multifuse MF-RX/72 series of polymer positive temperature coefficient devices. These resettable fuses are engineered for robust circuit protection in demanding environments. The series offers various hold currents and voltage ratings to accommodate diverse design specifications across multiple industries.
Replacement Considerations
Consult official Bourns substitution guides for verified equivalent part numbers. Do not assume functional compatibility with generic PTC components without reviewing electrical parameters and physical dimensions.
