1206W4F4021T5E

The "1206W4F4021T5E" is a specific part number for a resistor manufactured by Uniroyal, a company known for producing a variety of electronic components. This resistor is categorized as a surface-mount device (SMD), which means it is designed to be mounted directly onto the surface of printed circuit boards (PCBs), allowing for more compact and efficient designs.

Detailed Description:

1. Type and Configuration:

   • The "1206" in the part number indicates the physical size of the resistor, which is 1206 mils (1.2 inches by 0.6 inches). This size is commonly used in various electronic applications due to its balance between size and power handling capabilities.

2. Resistance Value:

   • The "402" in the part number signifies the resistance value of the resistor, which is 4.02 kΩ (kilo-ohms). This value is crucial for determining how much current will flow through the resistor when a voltage is applied.

3. Tolerance:

   • The "F" in the part number indicates the tolerance of the resistor, which is ±1%. This means that the actual resistance can vary by 1% above or below the specified value, providing a reliable range for circuit design.

4. Temperature Coefficient:

   • The "T5E" designation typically refers to the temperature coefficient of the resistor, which is important for understanding how the resistance value changes with temperature. A lower temperature coefficient indicates better stability across varying temperatures.

5. Power Rating:

   • This resistor is designed to handle a specific power rating, often around 1/4 watt (0.25W) for a 1206 size, making it suitable for a variety of applications where moderate power dissipation is required.

6. Material and Construction:

   • Uniroyal resistors are generally constructed using thin-film or thick-film technology, which affects their performance characteristics, including noise, stability, and frequency response. The materials used are typically a combination of ceramic substrates and metal films.

7. Applications:

   • The 1206W4F4021T5E resistor is suitable for a wide range of applications, including consumer electronics, automotive systems, telecommunications, and industrial equipment. Its compact size and reliable performance make it ideal for high-density circuit designs.

8. Environmental Considerations:

   • Many resistors from Uniroyal are designed to meet specific environmental standards, such as RoHS compliance, ensuring they are free from hazardous substances and suitable for use in environmentally conscious designs.

In summary, the "1206W4F4021T5E" from Uniroyal is a versatile and reliable surface-mount resistor that offers a resistance value of 4.02 kΩ with a tolerance of ±1%. Its compact size, power handling capabilities, and stability make it an excellent choice for various electronic applications.