RK73B1JTTD562J KOA Speer Electronics, Inc. RES 5.6K OHM 5% 1/10W 0603


The KOA Speer Electronics, Inc. RK73B1JTTD562J is a specific surface-mount resistor designed for various electronic applications. Here's a breakdown of its purpose, characteristics, and heat dissipation:


Purpose: Resistors, in general, are used to limit or control the flow of electric current in a circuit. This specific resistor, RK73B1JTTD562J, with a value of 5.6k ohms and a tolerance of 5%, can be used in different electronic circuits such as voltage dividers, pull-up/pull-down circuits, signal filtering, and voltage/current limiting.


  1. Resistance Value: 5.6k ohms with a tolerance of 5%. This means its resistance may vary by up to 5% from the stated value.
  2. Power Rating: 1/10W. This indicates the maximum power this resistor can dissipate without being damaged.
  3. Package Size: 0603 (1608 metric). This is the physical size of the component, indicating it is small and suitable for surface mount applications.

Heat Dissipation: Heat dissipation in resistors is essential to ensure the component operates within its temperature limits. The 1/10W power rating suggests that this resistor is designed to dissipate a maximum of 0.1 watts of power. Heat dissipation is achieved through conduction, convection, and radiation. For this specific resistor, typically placed on a PCB, heat is primarily dissipated through the pads and traces on the board and through the resistor's body itself.

It's important to note that the heat generated by the resistor (due to the current passing through it) needs to be dissipated effectively to prevent overheating, which could lead to component failure or affect the performance of the circuit.