| Allicdata Part #: | TRF250-145-RA-B-0.5-ND |
| Manufacturer Part#: |
TRF250-145-RA-B-0.5 |
| Price: | $ 0.58 |
| Product Category: | Circuit Protection |
| Manufacturer: | Littelfuse Inc. |
| Short Description: | PTC RESET FUSE 60V 145MA RADIAL |
| More Detail: | Polymeric PTC Resettable Fuse 60V (250V Int) 145mA... |
| DataSheet: |  TRF250-145-RA-B-0.5 Datasheet/PDF |
| Quantity: | 1748 |
| Moisture Sensitivity Level (MSL): | 1 (Unlimited) |
| Lead Free Status / RoHS Status: | Lead free / RoHS Compliant |
| 1 +: | $ 0.52920 |
| 5 +: | $ 0.51156 |
| 10 +: | $ 0.47880 |
| 50 +: | $ 0.39614 |
| 100 +: | $ 0.33012 |
| 250 +: | $ 0.32188 |
| 500 +: | $ 0.27235 |
| 1000 +: | $ 0.23934 |
| 5000 +: | $ 0.21458 |
Specifications
| Resistance - Initial (Ri) (Min): | 3 Ohms |
| Approvals: | CSA, TUV, UL |
| Lead Spacing: | 0.197" (5.00mm) |
| Thickness (Max): | -- |
| Height - Seated (Max): | 0.433" (11.00mm) |
| Size / Dimension: | 0.256" L x 0.181" W (6.50mm x 4.60mm) |
| Package / Case: | Radial, Disc |
| Mounting Type: | Through Hole |
| Ratings: | -- |
| Operating Temperature: | -40°C ~ 85°C |
| Resistance - Post Trip (R1) (Max): | 12 Ohms |
| Series: | PolySwitch®, TRF250 |
| Time to Trip: | 2.5s |
| Current - Trip (It): | 290mA |
| Current - Hold (Ih) (Max): | 145mA |
| Current - Max: | 3A |
| Voltage - Max: | 60V (250V Int) |
| Type: | Polymeric |
| Moisture Sensitivity Level (MSL): | -- |
| Part Status: | Active |
| Lead Free Status / RoHS Status: | -- |
| Packaging: | Bulk |
Description
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PTC resettable fuses offer an ideal low cost alternative to circuit breakers and other power protection options. This type of fuse is also known by other names such as polymeric positive temperature coefficient (PPTC), polyswitch, and reset fuse. PTC resettable fuses provide a safe, self-regulating solution for multiple applications ranging from consumer electronics to industrial power systems. One such device is the TRF250-145-RA-B-0.5 resettable fuse, one of the many PTC resettable fuses available on the market today. The TRF250-145-RA-B-0.5 is a medium current resettable fuse rated for 4A, making it suitable for a large range of applications. The device is a radial-leaded, self-extinguishing PTC fuse with a polymeric positive temperature coefficient (PPTC) element. The low cost and space savings it provides make it highly suitable for consumer electronics, electrical and household appliances, motor controls, IT equipment, automotive electronics, and other applications.The working principle of the TRF250-145-RA-B-0.5 PTC resettable fuse lies in the polymeric positive temperature coefficient (PPTC) element that it contains. This element comprises a polymer material with a unique thermal behavior which causes it to increase its electrical impedance as the temperature rises. When the device senses a fault current and its temperature rises, the impedance will increase until it limits the current flow to the desired value. This allows the device to provide overcurrent protection and, if necessary, open the circuit and safely de-energize the circuit it is protecting.Once the fault current has been limited the device can then be reset by simply applying a low current to the device which will reset it. The device is designed to re-trip if the fault current still exists and will also reset if the fault current has been removed. This allows the device to provide reliable protection without the need for manual resetting or replacing the device.The TRF250-145-RA-B-0.5 PTC resettable fuse is suitable for multiple applications and provides a high level of protection, saving time and money by limiting downtime in the event of an overload or a short circuit. The low cost and space-saving design make it highly suitable for a range of applications and the reliable protection it offers makes it a popular choice for manufacturers looking for an economical, safe, and reliable power protection solution.
The specific data is subject to PDF, and the above content is for reference
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| TRF250-120T-RA-B-0.5 | Littelfuse I... | 0.57 $ | 1489 | PTC RESET FUSE 60V 120MA ... |
| TRF250-110U-2 | Littelfuse I... | 0.0 $ | 1000 | PTC RESET FUSE 60V 110MA ... |
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