SQP25AJB-18K

The SQP25AJB-18K is a type of through-hole resistor. It is commonly used in applications such as heat sinks for toasters and televisions, and as a current-limiting series resistor, typically in power supplies.

The SQP25AJB-18K is a precision, low-power resistor made by FRANTAY. It comes in a wide range of resistance values, typically from 0.5 ohms to 33 kilo-ohms. The resistance tolerance is typically 5% or better and the temperature coefficient is typically 50 ppm/ degrees C. The resistors are encased in an epoxy top coat that provides excellent moisture resistance, helping to ensure long product life.

The SQP25AJB-18K has a unique design that makes it especially useful for applications requiring current protection. Its construction involves a thick-film base resistor sandwiched between a pair of wire-bond leads. The base resistor is comprised of a polymer-based film that is etched with precise grooves and information about the product is printed on it. The leads, which are then welded to the base resistor, are made of a copper-alloy material. The package is then filled with a silicone-rubber material and the two electrical connections are connected to the base resistor.

The working principle of the SQP25AJB-18K is such that the current-limiting series resistor limits the amount of current through the device. The base resistor provides a low-value resistance path, limited only by the fact that it is rated at a lower maximum power than other resistors. This ensures the resistance gives off heat at a rate that is sustainable, and also protects the circuit from surges and other over-current situations.

The SQP25AJB-18K is a versatile component that is typically used in power supplies and other current-sensitive circuits. Its particular design makes it suitable for applications that require precision current limiting solutions, such as medical equipment and aircraft onboard electronics.