Radial leaded, through-hole mount PTC resettable fuse designed for circuit protection. Features a 1.85A hold current and 3.7A trip current, with a maximum operating voltage of 30V DC. This polymer and epoxy encapsulated component offers a 40A maximum current rating and 1W power dissipation. Approvals include UL, CSA, and TUV, with a UL94 V-0 flammability rating. The device operates within a temperature range of -40°C to 85°C and is RoHS compliant.
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Bourns MF-R185 technical specifications.
| Approvals | UL, CSA, TUV |
| Body Diameter | 10.2mm |
| Body Height | 18.4mm |
| Body Length | 12mm |
| Body Material | Polymer, Epoxy |
| Package/Case | Radial |
| Current Rating | 40A |
| Diameter | 12mm |
| Flammability Rating | UL94 V-0 |
| Height | 18.4mm |
| Hold Current | 1.85A |
| Lead Diameter | 0.51mm |
| Lead Free | Lead Free |
| Lead Length | 7.6mm |
| Lead Pitch | 5.1mm |
| Manufacturer Series | MF-R |
| Max Current Rating | 40A |
| Max Operating Temperature | 85°C |
| Min Operating Temperature | -40°C |
| Max Power Dissipation | 1W |
| Mount | Through Hole, PCB |
| Operating Supply Voltage | 30V |
| Package Quantity | 500 |
| Package Shape | Disk |
| Packaging | Bulk |
| Power Dissipation | 1W |
| Radiation Hardening | No |
| Reach SVHC Compliant | No |
| Resistance | 70mR |
| RoHS Compliant | Yes |
| Series | MF-R |
| Terminal Finish | Copper |
| Terminal Placement | Radial |
| Termination | Radial |
| Thermistor Application | TEMPERATURE SENSING |
| Time to Trip | 8.7s |
| Trip Current | 3.7A |
| Voltage Rating | 30V |
| DC Rated Voltage | 30V |
| Width | 12mm |
| Wire/Cable Diameter | 0.51mm |
| RoHS | Compliant |
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