TRF250-145ST-B-0.5

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, such as the TRF250-145ST-B-0.5, have become very popular in recent years due to their superior protection capabilities and relatively low cost. The unique architecture of these devices makes them particularly effective at withstanding short circuit conditions, and they are a key piece of any circuit designer\'s arsenal. In this article, we\'ll take a look at the application fields and working principles of the TRF250-145ST-B-0.5.

Before discussing the working principles of the fuse, let\'s first examine the application fields of the device. The TRF250-145ST-B-0.5 is a thermally-activated, overcurrent protection device designed for use in consumer electronics, communication equipment, and industrial equipment.

The TRF250-145ST-B-0.5 provides overload and short circuit protection on a single line by opening its internal connection when current exceeds a predetermined level. The device has an integrated temperature sensing element that provides an additional level of safety by detecting and limiting heat generation due to overcurrent conditions. The TRF250-145ST-B-0.5 can also be used as a resetable fire protection device where heat sensing elements provide additional safety against fire hazards.

The working principle of the TRF250-145ST-B-0.5 is relatively simple. When an overcurrent or short circuit condition occurs, an internal heater element is activated, significantly increasing the temperature of the device. This elevated temperature causes the internal fuse link to open, interrupting current flow and protecting the underlying circuit.

Upon removal of the overcurrent or short circuit condition, the internal heater element quickly cools down, reducing the temperature of the device to its operating level. This resets the fuse\'s internal connection, restoring the device to its original, working condition. This resetting action can be repeated multiple times without any permanent damage to the device, and the device can remain operational for many years.

The TRF250-145ST-B-0.5 is a reliable, cost effective solution for protecting circuits from overcurrent and short circuit conditions. With its integrated temperature sensing element, the device provides an extra layer of safety and its ability to reset multiple times ensures long-term reliability. When used properly, the device can provide excellent protection for a wide variety of circuits.

The specific data is subject to PDF, and the above content is for reference