| Allicdata Part #: | TRF250-145US-ND |
| Manufacturer Part#: |
TRF250-145US |
| Price: | $ 0.57 |
| 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: |  TRF250-145US Datasheet/PDF |
| Quantity: | 1997 |
| Moisture Sensitivity Level (MSL): | 1 (Unlimited) |
| Lead Free Status / RoHS Status: | Lead free / RoHS Compliant |
| 1 +: | $ 0.52290 |
| 5 +: | $ 0.50778 |
| 10 +: | $ 0.49203 |
| 50 +: | $ 0.41404 |
| 100 +: | $ 0.34373 |
| 250 +: | $ 0.31248 |
| 500 +: | $ 0.26561 |
| 1000 +: | $ 0.23436 |
| 5000 +: | $ 0.21092 |
Specifications
| Resistance - Initial (Ri) (Min): | 3.5 Ohms |
| Approvals: | CSA, TUV, UL |
| Lead Spacing: | 0.197" (5.00mm) |
| Thickness (Max): | -- |
| Height - Seated (Max): | 0.394" (10.00mm) |
| Size / Dimension: | 0.236" L x 0.150" W (6.00mm x 3.80mm) |
| Package / Case: | Radial, Disc |
| Mounting Type: | Through Hole |
| Ratings: | -- |
| Operating Temperature: | -40°C ~ 85°C |
| Resistance - Post Trip (R1) (Max): | 14 Ohms |
| Series: | PolySwitch®, TRF250 |
| Time to Trip: | 4s |
| 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
Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us: sales@allicdata.com
PTC Resettable Fuses are thermal protection devices used to safeguard electrical circuits from exceeding their current ratings. The TRF250-145US is an example of this type of device. It offers over-current protection in an ultra-low-profile package design, and provides superior flexibility and space savings over other over-current protection solutions.In this article, we will discuss the application field and working principle of the TRF250-145US.The TRF250-145US is designed for use in a wide range of applications, including automotive, internet of things (IoT) applications, cellular base stations, consumer electronics and industrial equipment. It is a low-profile device, measuring just 1.45mm in height, which makes it an ideal choice in space-constrained applications.The TRF250-145US offers two unique features: it is fast-acting and prevents over-heating. Fast-acting means that it can switch off electric currents in milliseconds, while the over-heating protection ensures that the fuse doesn’t overheat and disrupt the circuit.The working principle of the TRF250-145US is based on a Polymeric Positive Temperature Coefficient (PPTC) device. It consists of PTC elements and an electrode contact. When the current passing through the fuse exceeds a predetermined level, the PTC elements begin to generate heat. This heat causes the PTC elements to swell, which in turn causes the electrode contact to open. The PTC element then begins to cool, shrinking again and allowing the contact to close. This resetting cycle can be repeated multiple times, and the fuse will not be permanently damaged by the process.The TRF250-145US is designed to handle currents of up to 10A and offers exceptional protection from over-current and over-temperature events. It is also UL certified and RoHS compliant, making it suitable for a variety of applications.In summary, the TRF250-145US is a low-profile PTC Resettable Fuse designed for use in a wide range of applications. It is fast-acting and prevents over-heating, and its Polymeric Positive Temperature Coefficient (PPTC) device ensures reliable over-current protection. The fuse is UL certified and RoHS compliant, and offers exceptional protection from over-current and over-temperature events.The specific data is subject to PDF, and the above content is for reference
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