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MF-RM008/240-2
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Product Detailed Parameters
- Description：PTC RESET FUSE 240V 80MA RADIAL
- Series：Multifuse®, MF-RM
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：240V (265V Int)
- Current - Hold (Ih) (Max)：80 mA
- Current - Trip (It)：190 mA
- Current - Max：1.2 A
- Time to Trip：10 s
- Resistance - Initial (Ri) (Min)：7.4 Ohms
- Resistance - Post Trip (R1) (Max)：26 Ohms
- Operating Temperature：-20°C ~ 85°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Through Hole
- Package / Case：Radial, Disc
- Size / Dimension：0.327" Dia x 0.150" T (8.30mm x 3.80mm)
- Height - Seated (Max)：0.508" (12.90mm)
- Thickness (Max)：-
- Lead Spacing：0.114" (2.90mm)
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Overview
The Bourns MF-RM008/240-2 is a radial leaded polymeric positive temperature coefficient (PPTC) resettable fuse from the MF-RM series. It features a rated voltage of 240 VAC and a hold current of 80 mA. The trip current is specified at 160 mA with a maximum trip time of 10 seconds. The device has a minimum resistance of 35 Ohms and a maximum resistance of 90 Ohms. Dimensions are 8.3 mm in length and 12.9 mm in height, with a power dissipation rating of 0.9 W. Operating temperatures range from -20°C to +85°C.
Feature Summary
- Provides automatic circuit protection through reversible tripping action upon overcurrent conditions
- Utilizes polymeric PTC technology for reliable thermal response without permanent damage
- Designed for through-hole PCB mounting with radial leads for secure mechanical attachment
Applications
- Consumer electronics circuit protection
- Industrial control system safeguarding
- Telecommunications equipment overcurrent defense
Procurement Notes
Verify component authenticity by cross-referencing the manufacturer part number against official Bourns documentation. Confirm that the specific suffix matches the required electrical ratings and package style. Ensure compliance with relevant safety standards such as UL and RoHS before integration into final assemblies.
Selection Notes
Select this component based on the specific 80 mA hold current requirement and 240 VAC voltage rating. Evaluate the thermal environment to ensure operation within the -20°C to +85°C range. Consider the physical dimensions and lead spacing for adequate PCB layout clearance and mounting stability.
Part Context
This component belongs to the MF-RM series of resettable fuses manufactured by Bourns Inc. The series is characterized by its compact radial leaded package and suitability for general-purpose circuit protection applications across various electronic industries.
Replacement Considerations
Consult official Bourns substitution guides for verified equivalent parts within the MF-RM series or other compatible families. Ensure any substitute maintains identical voltage, current, and dimensional specifications.
