Description

Here’s a detailed description for the 390K Ohm (390kΩ) 2W 1% Axial Through Hole Resistor - MOF:

390K Ohm (390kΩ) 2W 1% Axial Through Hole Resistor - MOF

The 390K Ohm (390kΩ) 2W 1% Axial Through Hole Resistor - MOF is a high-precision, medium-power resistor designed to deliver accurate resistance values and stable performance under a variety of operating conditions. Constructed using Metal Oxide Film (MOF) technology, this resistor is built to handle moderate power dissipation while maintaining high thermal stability, low noise, and excellent durability. Its 1% tolerance ensures that it can be used in applications requiring tight resistance accuracy, while its 2W power rating makes it suitable for circuits with moderate power needs.

Resistance Value (390K Ohms):

The 390,000 ohms (390kΩ) resistance value is ideal for applications where high resistance is required to limit current flow or set precise voltage levels. It is commonly used in voltage divider networks, signal conditioning, and feedback circuits where a relatively high resistance is needed to create specific voltage or current characteristics.

Common applications of the 390kΩ resistor include:

• Voltage Dividers: It’s often used in voltage divider circuits, where two resistors are combined to create specific voltage levels. In combination with another resistor, the 390kΩ resistor helps scale voltages for signal conditioning, ADC (analog-to-digital conversion), and sensor interfaces.
• Signal Processing: As part of RC or RL filters, the 390kΩ resistor helps to shape and filter signals in audio, RF, and other signal-processing applications.
• Biasing Active Components: It is useful in biasing circuits for transistors, op-amps, and other active components. It ensures that amplifiers, oscillators, and voltage regulators operate at the correct bias points.

Power Rating (2W or 2 Watts):

The 2W power rating means that the 390kΩ resistor can safely dissipate up to 2 watts of power without risk of failure. This makes it suitable for medium-power applications, where moderate power dissipation is required but excessive heat buildup needs to be avoided.

Key benefits of the 2W power rating include:

• Current Limiting: The 390kΩ 2W resistor is suitable for use in current-limiting circuits, where it ensures the flow of current is kept within safe levels. It is used in LED drivers, sensor protection, and power supply circuits.
• Power Regulation: In voltage regulation and power supply circuits, the 390kΩ 2W resistor helps regulate current flow and ensures that circuits remain within optimal operating parameters without excessive heat.
• Signal Conditioning: In signal processing applications, where power dissipation is moderate, this resistor ensures that the filter networks or biasing circuits remain stable without overheating.

Tolerance (1%):

The 1% tolerance indicates that the actual resistance of the 390kΩ resistor can vary by up to ±1% from its nominal value of 390kΩ. This level of precision is crucial in circuits where exact resistance is necessary to maintain stable performance and meet strict design specifications.

Benefits of the 1% tolerance include:

• Precision Feedback: In feedback loops for amplifiers, voltage regulators, or oscillators, a 1% tolerance ensures that the resistor helps maintain the correct gain and stable performance of the circuit.
• Voltage Divider Networks: In voltage dividers, precision is important for generating accurate voltage levels. The 1% tolerance ensures that the resistance values are stable and the circuit behaves predictably.
• Calibration Circuits: The 1% tolerance also makes this resistor suitable for calibration applications, where high accuracy is critical for precise measurements and operations.

Axial Through-Hole Mounting:

This resistor features an axial through-hole design, meaning it has leads extending from both ends that pass through holes in a printed circuit board (PCB). These leads are then soldered to the other side of the board, providing a secure electrical connection and mechanical stability.

Advantages of the axial through-hole design include:

• Strong Mechanical Mounting: The leads pass through the PCB, ensuring that the resistor is mechanically secure and resistant to physical stress.
• Reliable Electrical Connection: The soldered connections offer a reliable and stable electrical path, ensuring consistent circuit performance.
• Easy Handling and Repair: The through-hole design makes this resistor easy to handle, solder, and replace in both prototyping and production environments. It is particularly well-suited for DIY projects, repair work, and prototype testing.

Material and Durability – Metal Oxide Film (MOF):

Made from Metal Oxide Film (MOF), this resistor offers superior thermal stability and resistance to overload conditions compared to traditional carbon-based resistors. The MOF construction ensures the resistor can withstand higher voltages, maintain stable resistance over temperature variations, and have long-lasting performance under normal operating conditions.

Key benefits of the MOF construction:

• Higher Voltage Tolerance: MOF resistors can handle higher voltage levels without risk of failure or degradation, making them suitable for high-voltage circuits.
• Excellent Thermal Performance: The MOF technology provides better thermal stability, ensuring that the resistor’s performance remains consistent even under temperature fluctuations.
• Low Noise: MOF resistors produce less electrical noise, making them ideal for signal processing applications, where low noise is crucial.

Applications:

• Voltage Divider Networks: The 390kΩ 2W resistor is commonly used in voltage divider circuits, where precise voltage levels are required. This is useful in applications such as sensor interfacing, signal conditioning, voltage scaling, and analog-to-digital conversion.

• Signal Processing and Filtering: In RC or RL circuits, the 390kΩ resistor is used in filter networks to shape and process signals. It finds applications in audio circuits, radio frequency (RF) circuits, and other signal filtering systems where the resistance needs to be precisely controlled.

• Biasing Active Components: The 390kΩ resistor is often used in biasing circuits for transistors, operational amplifiers, and other active components. It helps establish the correct operating points for these components in amplifiers, oscillators, and voltage regulators.

• Power Supply Regulation: This resistor can also be used in power supply regulation circuits, where it helps manage current flow and voltage stabilization. It can be found in DC-DC converters, linear regulators, and other power regulation circuits.

• Feedback Circuits: The 1% tolerance makes the 390kΩ resistor ideal for precision feedback loops in control systems, where accurate resistance ensures stable circuit behavior.

Ease of Handling and Repair:

Thanks to its axial through-hole design, the 390kΩ 2W resistor is easy to solder, replace, and integrate into both prototypes and production assemblies. The MOF construction ensures that the resistor remains durable and stable, even after multiple soldering cycles, making it an excellent choice for DIY projects and repair work.

In Summary:

The 390K Ohm (390kΩ) 2W 1% Axial Through Hole Resistor - MOF is a high-precision, medium-power resistor that offers accurate resistance, stable performance, and reliable power dissipation. Its 1% tolerance and 2W power rating make it perfect for applications that require precise voltage control, current limiting, and signal conditioning.

The Metal Oxide Film (MOF) construction ensures excellent thermal stability, low noise, and high durability in a variety of circuits. The axial through-hole design makes it easy to handle, solder, and replace, ensuring a strong and reliable connection in electronic systems.

This resistor is ideal for high-voltage circuits, feedback loops, voltage dividers, signal filters, and power supply regulation, providing reliable performance in both precision applications and medium-power systems.