1812L300MR Circuit Protection |
|
| Allicdata Part #: | F4162TR-ND |
| Manufacturer Part#: |
1812L300MR |
| Price: | $ 0.00 |
| Product Category: | Circuit Protection |
| Manufacturer: | Littelfuse Inc. |
| Short Description: | PTC RESET FUSE 6V 3A 1812 |
| More Detail: | Polymeric PTC Resettable Fuse 6V 3A Ih Surface Mou... |
| DataSheet: |  1812L300MR Datasheet/PDF |
| Quantity: | 4000 |
| Moisture Sensitivity Level (MSL): | 1 (Unlimited) |
| Lead Free Status / RoHS Status: | Lead free / RoHS Compliant |
Specifications
| Resistance - Initial (Ri) (Min): | 12 mOhms |
| Approvals: | cURus, TUV |
| Lead Spacing: | -- |
| Thickness (Max): | 0.059" (1.50mm) |
| Height - Seated (Max): | -- |
| Size / Dimension: | 0.179" L x 0.128" W (4.55mm x 3.24mm) |
| Package / Case: | 1812 (4532 Metric), Concave |
| Mounting Type: | Surface Mount |
| Ratings: | -- |
| Operating Temperature: | -40°C ~ 85°C |
| Resistance - Post Trip (R1) (Max): | 40 mOhms |
| Series: | POLY-FUSE®, 1812L |
| Time to Trip: | 4s |
| Current - Trip (It): | 5A |
| Current - Hold (Ih) (Max): | 3A |
| Current - Max: | 100A |
| Voltage - Max: | 6V |
| Type: | Polymeric |
| Moisture Sensitivity Level (MSL): | -- |
| Part Status: | Active |
| Lead Free Status / RoHS Status: | -- |
| Packaging: | Tape & Reel (TR) |
Description
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PTC Resettable Fuses, or Polymeric Positive Temperature Coefficient (PPTC) resettable fuses, are devices that are used to protect electrical and electronic components against overcurrent. The 1812L300MR PTC Resettable Fuse is a miniature thermally-activated device that utilizes a polymeric Positive Temperature Coefficient element to block current in the event of overload or short-circuit. It is designed to detect and protect electronic circuits against overloads, short-circuits, and inrush currents.
The 1812L300MR PTC Resettable Fuse has been developed specifically for use in a wide range of consumer devices such as LCD/LED TVs, electric kettles, TV set top boxes, game consoles, LCD monitors, routers, and media players. This device is also suitable for automotive applications such as car audio systems, in-car entertainment systems, airbag sensors, and temperature sensors. It is suitable for applications where space is confined, including in apparatus having high circuit integration. It is a RoHS compliant device and requires a current of 300mA to trip.
The working principle of the 1812L300MR PTC Resettable Fuse is based on the concept of thermal self-reseting. When an overload or short-circuit occurs, the current will increase significantly, causing the device to heat up. As the temperature increases, the device\'s positive temperature coefficient element will expand and this will cause the internal resistance to increase, blocking the current flow until the overload or short-circuit is cleared. Once the current is reduced, the device will slowly cool down and the internal resistance will decrease, resetting the fuse to its normal state. The device can be used over a temperature range of -40°C to +85°C.
The 1812L300MR PTC Resettable Fuse is a compact, cost-effective device for application-specific protection of electronic circuits and components. It is a great alternative to other fuse types such as ceramic, glass, and magnetic types, as it does not require replacement after a fault has occurred. This makes it suitable for hard-to-reach locations and for automotive applications where it is not practical to replace a fuse. It is highly reliable, cost-effective, and easy to install. It can also be used in combination with other fuse types such as fusible links or cartridge fuses for maximum protection.
In conclusion, the 1812L300MR PTC Resettable Fuse is a cost-effective and reliable device used to protect electronic circuits and components against overcurrent, overloads, short-circuit, and inrush currents. It utilizes a polymeric Positive Temperature Coefficient element that will expand to block current in the event of a fault. It is suitable for space-confined applications, automotive applications, and other consumer devices. It is an excellent choice for applications that require difficult-to-reach fuse replacement or for applications where maximum circuit protection is needed.
The specific data is subject to PDF, and the above content is for reference
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