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| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
57 pcs
|
57 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request | |
|
2 pcs
|
2 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
| Category | |
| Manufacturer Name | |
| AEC Qualified | |
| Automotive Grade | |
| Current | |
| Halogen Free | |
| Height | |
| Hold Current (Ihold) | |
| Initial Resistance | |
| Lead Spacing | |
| Length | |
| Max Current (Imax) | |
| Max Voltage (Vmax) | |
| Mounting Type | |
| Operating Temperature | |
| Post-Trip Resistance | |
| Prop 65 | |
| Resistance | |
| Resistance After 1 Hour (R1) | |
| Storage Temperature | |
| Tape & Reel | |
| Time to Trip | |
| Trip Current (Itrip) | |
| Tripped Power Dissipation | |
| Type | |
| Voltage | |
| Width |
The Bourns MF-RX185/72-0 is a polymeric PTC resettable fuse from the MF-RX/72 series, designed for overcurrent protection in low voltage circuits up to 72V. It has a hold current of 1.85A and a trip current of 3.70A, with a maximum interrupt rating of 40A. The device offers low initial resistance (0.08 Ω to 0.12 Ω) and a maximum post-trip resistance of 0.19 Ω, ensuring minimal power loss during normal operation.
This PTC fuse is housed in a radial, disc package with a lead spacing of 5.10 mm and overall dimensions of 17.80 mm length, 3.10 mm width, and 22.90 mm height. It operates over a temperature range of -40°C to 85°C and is suitable for through-hole mounting. The part is RoHS compliant, lead-free, and halogen-free per Bourns definition.
Typical applications include security and fire alarm systems, loudspeakers, and power transformers where reliable resettable overcurrent protection is required. The device is recognized by cUL and TÜV agencies.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.41 | $0.41 |
| 10+ | $0.39 | $0.39 |
| 50+ | $0.36 | $0.36 |
| 100+ | $0.31 | $0.31 |
| 250+ | $0.30 | $0.30 |
| 500+ | $0.29 | $0.29 |
| 1,000+ | $0.24 | $0.24 |
| 3,000+ | $0.21 | $0.21 |
| 6,000+ | $0.20 | $0.20 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The hold current (Ihold) is 1.85 A at 23°C.
The maximum voltage (Vmax) is 72 V.
The trip current (Itrip) is 3.70 A, and the maximum time to trip at 9.25 A is 12.6 seconds.
It comes in a radial, disc package with through-hole mounting and a lead spacing of 5.10 mm.
The operating temperature range is -40°C to 85°C.
Yes, it is RoHS compliant and lead-free as stated in the datasheet.