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MF-R900-AP-99
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Product Detailed Parameters
- Description：PTC RESET FUSE 30V 9A RADIAL
- Series：Multifuse®, MF-R
- Mfr：Bourns Inc.
- Package：Tape & Box (TB)
- 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-AP-99 is a radial leaded PTC resettable fuse from the Multifuse MF-R series. It features a 9.0 A hold current and a 30 V maximum voltage rating. The device provides overcurrent protection with a trip current of 18.0 A and a maximum fault current rating of 100 A. Its initial resistance is typically 2.5 milliohms, operating within a temperature range of -40°C to +85°C.
Feature Summary
- Provides automatic circuit protection through self-resetting polymeric technology upon cooling after tripping.
- Encased in cured flame-retardant epoxy polymer insulation meeting UL 94V-0 requirements for safety.
- Radial leaded construction facilitates straightforward insertion into printed circuit board assemblies.
Applications
- Low-voltage power supply circuits
- Computer and peripheral equipment
- General electronics devices
Procurement Notes
Verify component authenticity by cross-referencing the manufacturer part number against official Bourns documentation. Confirm that the specific suffix corresponds to the required packaging configuration. Ensure compliance with RoHS directives and halogen-free specifications prior to integration into final products.
Selection Notes
Select this component based on the required 9.0 A hold current and 30 V system voltage. Evaluate thermal derating curves to ensure reliable operation at elevated ambient temperatures. Verify that the radial lead spacing matches the target PCB footprint design constraints.
Part Context
This part belongs to the Bourns Multifuse MF-R series of PTC resettable fuses. These components are designed for load protection in low-voltage applications. The series utilizes radial leads and epoxy insulation to provide robust circuit protection across various electronic industries.
Replacement Considerations
Consult official substitution lists for equivalent MF-R series variants with matching electrical ratings. Verify that alternative parts maintain identical hold current, voltage rating, and physical dimensions for direct replacement compatibility.
