4820P-T01-101LF

Resistor Networks, Arrays – 4820P-T01-101LF Application Field and Working Principle

The 4820P-T01-101LF is a network of resistors within a common housing containing an array of resistors in series, each supplying a different physical form and electrical resistance. It’s a SMT resistor network specially designed for processor-based boards, applications in which space savings is a high priority.

Applications

The 4820P-T01-101LF is commonly used on motherboards, providing higher protection against overvoltage and ESD. The resistance network can also be used for backlight applications, such as digital displays, small handheld devices, and digital cameras. Other utilization include signal conditioning, compensation networks, switching, and other circuit protection tasks that require highly precise resistance for interference suppression.

Working Principle

The 4820P-T01-101LF includes a matrix of 4 resistors in series. The size and resistance range are 0805 size (2012 metric) with a resistance range from 0.1 ohms to 91K ohms. Each element has a self-contained resistance element that is connected to the other three elements of the network with a common pin count of 4. This allows for strong, low impedance connections to downstream components. The array provides more reliable and consistent results than a single element with the same resistance value.

Types of Resistors

The resistors found in the 4820P-T01-101LF come in two varieties: thin film and metal film. Thin film consists of metalized plastic film, most commonly containing tin and lead oxide. This type of resistor has excellent stability over temperature as well as time. The metal film resistors are constructed of high-grade nickel and copper alloys and are primarily used for the power requirements of the circuit.

Resistor Power Rating

The power rating for the 4820P-T01-101LF is 0402 package (1005 metric), with a range from 0.125 watts to 0.5 watts. This is also known as the “heat limit” of the resistor. Exceeding the power rating of a resistor may cause damage to the element and affect the performance of your circuit. Ensure that the power rating of the resistor, as well as your application, are taken into consideration when making your design.

Conclusion

The 4820P-T01-101LF resistor network provides multiple resistance values in a single package, enabling efficient space savings on processor boards. It’s powered by the equivalent of two thin film and two metal film resistors, and can handle a maximum of 0.5 watts at 0402 package size. Applications include backlight, signal conditioning, compensation network, and protection against overvoltage and ESD.