The RM73B1JT390J is a thick film chip resistor manufactured by KOA Speer. Part of the RM73 series, it is designed for general-purpose applications that require reliable and stable resistance using surface mount technology (SMT). The '390J' designation indicates a resistance value of 39 ohms (39 * 10^0 ohms) with a tolerance of ±5% (indicated by the 'J'). These resistors are frequently used in electronic circuits to limit current, divide voltage, or function as pull-up/pull-down resistors.

Applications

• General Circuitry: Current limiting and voltage division.
• Signal Termination: Used to terminate signals and prevent reflections.
• Feedback Resistors: Used in amplifier circuits for gain control.
• Filter Circuits: Components in analog and digital filters.
• Power Supplies: Current limiting and voltage regulation.

Features

• Thick Film Technology: Provides good stability and reliability.
• Surface Mount Package: Enables automated assembly and efficient board space usage.
• Wide Operating Temperature Range: Suitable for a variety of environments.
• RoHS Compliant: Meets environmental standards for lead-free manufacturing.
• Compact Design: Allows for high-density circuit designs.

Benefits

• Stable Resistance: Provides consistent performance under various operating conditions.
• Cost-Effective: Offers a good balance of performance and price.
• Automated Assembly: Simplifies the manufacturing process.
• Environmentally Friendly: Reduces hazardous substances in manufacturing.
• Space Saving: Enables smaller and more compact electronic devices.

Additional Details

The RM73B1JT390J typically comes in standard EIA case sizes, such as 0402, 0603, or 0805. The power rating, representing the maximum power the resistor can safely dissipate, is generally around 0.063W to 0.125W, depending on the specific case size. It is designed to operate over a temperature range typically from -55°C to +155°C. The temperature coefficient of resistance (TCR) is an important parameter indicating the change in resistance per degree Celsius; thick film resistors usually have a low TCR.

For comprehensive specifications, designers should consult the KOA Speer datasheet. Proper soldering techniques should be applied during assembly to ensure optimal performance and long-term reliability.