Description

The 390 Ohm 1/2W 5% Through Hole Resistor is a versatile and widely used resistor in a range of electronic applications. Featuring a resistance of 390 ohms, a power rating of 1/2 watt (0.5W), and a 5% tolerance, this resistor is ideal for controlling current flow, voltage regulation, and signal processing. Its through-hole mounting design allows for easy integration into printed circuit boards (PCBs), making it suitable for both prototyping and mass production.

Key Specifications:

• Resistance: 390 ohms

  • The 390 ohm resistance value is commonly used in circuits that require moderate current control, voltage regulation, or signal conditioning. It is often employed in power supply circuits, voltage dividers, and LED circuits.

• Power Rating: 1/2 watt (0.5W)

  • This resistor can safely dissipate up to 1/2 watt (0.5W) of electrical power without overheating. It is suitable for low-to-medium power applications, ensuring the resistor operates safely within its rated limits.

• Tolerance: ±5%

  • The 5% tolerance means the actual resistance value can vary by up to 5% from the nominal value. For the 390 ohm resistor, the actual resistance could range from 370.5 ohms to 409.5 ohms.

• Mounting Type: Through-hole

  • The through-hole mounting design allows for the resistor's leads to be inserted through holes in the PCB, where they are soldered to ensure a strong and durable electrical connection. This mounting type is widely used in both prototyping and production applications.

Applications:

• Current Limiting:
  The 390 ohm resistor is ideal for use in circuits that require current limiting, such as LED circuits, to protect components from excessive current that could damage them.

• Voltage Regulation:
  This resistor is frequently used in voltage regulation circuits to help maintain a stable voltage level and control the flow of current through various components in the circuit.

• Power Distribution:
  The 390 ohm resistor is useful in power distribution systems, where it helps regulate current and voltage to ensure that components receive the proper levels without overloading.

• Signal Processing and Filtering:
  This resistor is effective in signal processing and filtering applications, where it helps to smooth signals, reduce noise, and stabilize voltage levels in circuits such as audio amplifiers, RF systems, and sensor circuits.

Physical Characteristics:

• Size:
  A 1/2 watt resistor typically measures around 1/4 inch (6.35 mm) in length and 1/8 inch (3.18 mm) in diameter, although the exact dimensions may vary slightly depending on the manufacturer.

• Construction:
  The resistor has a cylindrical body with metal leads extending from each end. These leads are designed to pass through PCB holes and are soldered to form a secure and reliable electrical connection.

Summary:
The 390 Ohm 1/2W 5% Through Hole Resistor is a reliable and widely used component suitable for various electronic applications. With its 390 ohm resistance, 1/2 watt power rating, and 5% tolerance, it is perfect for current limiting, voltage regulation, power distribution, and signal processing. The through-hole mounting design ensures a secure connection to PCBs, making it ideal for both prototyping and mass production. Whether used in LED circuits, voltage regulation, or signal filtering, this resistor provides consistent and dependable performance in a wide range of electronic systems.