SMD2920P150TSA

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PTC resettable fuses are polymer-based electronic components used for overcurrent protection. The SMD2920P150TSA is one such device from the family of polymeric positive temperature coefficient (PPTC) offers reliable, low-resistance, resettable circuit protection in both high temperature and high current applications.

The SMD2920P150TSA utilizes a thermally switchable, semi-conductive, polymer and is an alternative to the traditional fuses providing overcurrent protection. The SMD2920P150TSA features a maximum current rating of 15A, with a trip current of 0.8A. The fusing action of the SMD2920P150TSA is triggered when an overcurrent passes through the circuit, heating up the polymer switch and causing a reset impedance to be introduced. At 150°C the circuit opens, isolating the defect current and providing overcurrent protection for the device.

The SMD2920P150TSA is well suited to aerospace, military, automotive and industrial applications due to its compact size, resettable actuation, low resistance, higher current ratings and broad operating temperature range of between -40°C and 125°C. It is compliant to a variety of industry standards, including UL 248-14 and C-UL, and provides a superior performance compared to other PTC resettable fuses in harsh and extreme temperature and current environments.

The working principle of the SMD2920P150TSA is simple. When the fuse is operating at its normal current rating, the core of the device is cool and the switching element is highly resistive. This means that the current passes through the device and things function appropriately. As soon as an overcurrent passes through the device, which exceeds the trip current rating, the temperature of the device increases rapidly and the switching element will become conductive. The resistance of the switching element will then rapidly decrease, limiting the current in the circuit and reducing the risk of circuit damage.

The SMD2920P150TSA can be used in a variety of applications to provide advanced overcurrent protection. This includes consumer electronics, industrial automation, motor control, audio/video amplifiers, power supplies, and computer peripherals. With its ability to reset itself after protection has been activated, the SMD2920P150TSA can be used over and over again in applications that require reliable overcurrent protection.

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