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MF-R900-2-99
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Product Detailed Parameters
- Description：PTC RESET FUSE 30V 9A RADIAL
- Series：Multifuse®, MF-R
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR)
- Type：Polymeric
- Voltage - Max：30V
- Current - Hold (Ih) (Max)：9:00 AM
- Current - Trip (It)：18 A
- Current - Max：40 A
- Time to Trip：20 s
- Resistance - Initial (Ri) (Min)：5 mOhms
- Resistance - Post Trip (R1) (Max)：20 mOhms
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Through Hole
- Package / Case：Radial, Disc
- Size / Dimension：0.953" L x 0.118" W (24.20mm x 3.00mm)
- Height - Seated (Max)：1.295" (32.90mm)
- Thickness (Max)：-
- Lead Spacing：0.402" (10.20mm)
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Overview
The Bourns MF-R900-2-99 is a polymeric positive temperature coefficient (PPTC) resettable fuse designed for overcurrent and overtemperature protection. It features a maximum voltage rating of 30 VDC, a hold current of 9 A, and a trip current of 18 A. The device supports a maximum fault current of 40 A and has a typical resistance of 3.5 mΩ. Operating within a temperature range of -40°C to +85°C, it utilizes a radial through-hole package with a lead spacing of 10.2 mm.
Feature Summary
- Polymeric PTC construction provides automatic reset capability after fault clearance
- Radial through-hole mounting facilitates standard PCB integration
- Disc form factor offers compact physical footprint for circuit protection
Applications
- Overcurrent protection in consumer electronics
- Overtemperature safeguarding in industrial control systems
- Circuit protection in automotive applications
Procurement Notes
Verify the specific suffix '-99' against the manufacturer's official documentation to confirm packaging configuration and reel specifications. Ensure the selected variant matches the required 30V rating and 9A hold current for the target application. Cross-reference the datasheet for precise mechanical dimensions and thermal characteristics before finalizing procurement orders.
Selection Notes
Select this component when a resettable fuse with a 30VDC maximum voltage and 9A continuous current capacity is required. Consider the 10.2mm lead spacing for PCB layout compatibility. Evaluate the 40A maximum fault current rating against potential surge conditions. Confirm that the operating temperature range of -40°C to +85°C aligns with the environmental requirements of the end product.
Part Context
This part belongs to the Bourns MF-R series of polymeric PTC resettable fuses. These devices are engineered to provide reliable circuit protection by increasing resistance significantly upon overheating or excessive current flow. The series is widely utilized across various industries for safeguarding sensitive electronic components from damage due to electrical faults.
Replacement Considerations
Consult the official Bourns replacement guide for direct substitutes. Verify that any alternative maintains identical voltage, current, and dimensional specifications.
