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MF-R700-2-99
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Product Detailed Parameters
- Description：PTC RESET FUSE 30V 7A RADIAL
- Series：Multifuse®, MF-R
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR)
- Type：Polymeric
- Voltage - Max：30V
- Current - Hold (Ih) (Max)：7:00 AM
- Current - Trip (It)：14 A
- Current - Max：40 A
- Time to Trip：17.5 s
- Resistance - Initial (Ri) (Min)：5 mOhms
- Resistance - Post Trip (R1) (Max)：30 mOhms
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Through Hole
- Package / Case：Radial, Disc
- Size / Dimension：0.870" L x 0.118" W (22.10mm x 3.00mm)
- Height - Seated (Max)：1.173" (29.80mm)
- Thickness (Max)：-
- Lead Spacing：0.402" (10.20mm)
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Overview
The Bourns MF-R700-2-99 is a radial leaded PPTC resettable fuse from the MF-R series, designed for PCB mounting. It features a maximum voltage rating of 30 VDC and a hold current of 7 A. The device trips at 14 A and withstands a maximum trip current of 40 A. Its initial resistance is 20 mΩ. The component operates within a temperature range of -40°C to +85°C, with a lead spacing of 10.2 mm and a height of 18 mm.
Feature Summary
- Provides automatic circuit protection through self-resetting polymeric positive temperature coefficient technology.
- Offers high current handling capability with a maximum trip rating of 40 A for robust overload defense.
- Features a low resistance profile to minimize power loss during normal operation.
Applications
- Overcurrent protection in consumer electronics circuits
- Surge protection for automotive electronic modules
- Industrial equipment power supply safeguarding
Procurement Notes
Verify that the specific suffix matches the required lead length and packaging format. Confirm RoHS compliance status for environmental regulations. Ensure the thermal derating curves align with the intended operating environment. Cross-reference the datasheet for precise mechanical dimensions before finalizing the design.
Selection Notes
Select this component when a 7 A hold current and 30 VDC rating are required. Consider the 14 A trip threshold for fast response needs. Evaluate the 20 mΩ resistance impact on system efficiency. Verify compatibility with the target PCB footprint and soldering process parameters.
Part Context
This part belongs to the Bourns MF-R series of high-density resettable fuses. The series is engineered for compact board-level protection applications. It complements other Bourns protection devices by offering reliable, reusable overcurrent interruption without manual replacement requirements.
Replacement Considerations
Consult official substitution lists for equivalent MF-R variants with adjusted current ratings. Verify mechanical fit and electrical specifications before swapping components. Generic replacements may not match the specific lead spacing or thermal characteristics.
