PFMD.160.2

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PTC resettable fuses, also known as polyfuse, are electrical components designed to protect circuits from over-current conditions. The PFMD.160.2 is particularly suitable for applications such as PC motherboards, telecom equipment, telecommunications, and industrial control devices. In this article, we will discuss the application field and working principle of PFMD.160.2.

The PFMD.160.2 is a chip-type device with a small form factor of only 15.24 × 9.7 × 4.2mm. This makes it very suitable for applications with space restrictions. The device features a self-resetting circuit that automatically recovers after removal of an overcurrent fault, allowing it to protect against short-term and long duration overcurrent conditions. In addition, it features a wide operating temperature range of -40°C to +125°C and a wide voltage range of 32V to 60V. All of these features make the PFMD.160.2 an ideal choice for applications that require frequent protection changes or require high levels of protection.

The working principle of the PFMD.160.2 is relatively simple. The device consists of a PTC thermistor element, a printed circuit board, a bypass diode, and a contact clip. When an abnormally high current passes through the PTC element, it causes the temperature of the element to rise. As the temperature rises, the resistance of the element increases, eventually causing the current to drop. The bypass diode then acts as an alternative path for the current to flow, allowing the device to recover from the overcurrent fault. The contact clip provides a contact point to the device allowing it to be easily connected to the circuit it is protecting.

The PFMD.160.2 is designed to trip quickly in the event of an overcurrent condition, providing fast and reliable protection. Additionally, the device provides a simple method of integrating protection, eliminating the need for complex wiring solutions. The simple design of the device also makes it easy to inspect and maintain, and is a great way to reduce downtime in applications that require frequent protection changes.

In conclusion, the PFMD.160.2 is an efficient and reliable device for protecting circuits from overcurrent conditions. It features a compact form factor, wide temperature and voltage range, and a simple self-resetting design. All of these features make the device a great choice for applications that require frequent protection changes or require high levels of protection.

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