16R250BPR

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PTC resettable fuses, also known as polyfuses or polyswitch, are a special type of fuse commonly used in a wide variety of electronic devices. The term “polyfuse” refers to a polymer-based material, which is used in these devices. This material is designed to melt when subjected to high temperatures, thus providing an effective protection against overloads or electrical shorts. The 16R250BPR is one of the most common types of PTC resettable fuses in use today.

In general, PTC resettable fuses consist of a thermistor element connected in series with the device circuit. This thermistor is designed to heat up when a short circuit or overload occurs, and to increase its resistance until the current is cut off and the device is protected from over-voltage. Since the fuse is thermally resetable, it can automatically enter into a low resistance state when the temperature cools, thereby allowing the device to be reset.

The 16R250BPR is a small, self-resetting, polymeric based PTC (positive temperature coefficient) fuse specifically designed for inrush current protection. With an operating temperature range of -40 to 80°C, this fuse can provide protection against temporary over current surges up to 16A, a maximum voltage of 250V, and a time-to-trip of 60 seconds. It is available in a variety of sizes and packages, and can be used for a wide range of applications.

One of the main advantages of the 16R250BPR PTC resettable fuse is its low cost, making it a popular choice for a wide range of applications. For example, it is commonly used in low power electronics such as LED drivers, power supplies, modems, and other consumer electronics products. It is also used in automotive and industrial applications, and in electronic devices that require over-voltage or surge protection. In addition, this fuse is also often employed in telecom systems and equipment, in order to protect against over-voltage or other short-term spikes.

In order to understand the working principle of the 16R250BPR PTC resettable fuse, it is important to understand the principles behind PTC thermistors. PTC thermistors are comprised of a special polymeric material that is designed to gradually increase in resistance when exposed to current. This increase in resistance generates a temperature increase that, in turn, increases the resistance even more. When the current reaches a point where the fuse can no longer support it, the thermistor will increase its resistance enough to break the circuit and protect the device from damage.

Once the current is broken, the thermistor will cool down and the resistance will return to the normal operating range. This means that the 16R250BPR PTC resettable fuse can be used for a wide range of applications, provided that the load current does not exceed the fuse’s rated current. In addition, since the thermistor is designed to reset on its own when the current drops below a certain level, this type of fuse is ideal for applications where the overloads are short-term or intermittent.

Overall, the 16R250BPR PTC resettable fuse is an effective and cost-effective solution for protecting against over-voltage or short-term current spikes in a wide range of applications. With its low cost and wide operating temperature range, this type of fuse can provide effective over-voltage protection for a variety of electronic devices, while simultaneously allowing for resetting of the circuit in the event of overload or short-term current spikes.

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