The Ohmite AP750 4R7 F is a wirewound resistor designed for power applications. This specific resistor has a resistance value of 4.7 ohms and is part of the AP700 series of power resistors known for their robust construction and reliable performance under demanding conditions. The 'F' likely indicates the tolerance, typically 1% for precision applications.

Applications:

• Power Supplies: Used for current limiting and voltage dropping.
• Motor Control Circuits: Provides current sensing and control.
• Inverters: Used for inrush current limiting and voltage regulation.
• Amplifiers: Employed as load resistors and feedback elements.
• Braking Resistors: Dissipates energy in braking circuits.
• Testing Equipment: Found in load banks and calibration equipment.

Features:

• Wirewound Construction: Provides excellent stability and power handling capabilities.
• High Power Rating: Capable of dissipating significant amounts of power. The AP750 series generally handles up to 750 Watts but the specific power rating of this part depends on the full specifications and thermal management.
• Low Temperature Coefficient: Ensures stable resistance values over a wide temperature range.
• High Stability: Maintains consistent performance over time.
• Flameproof Coating: Enhances safety by preventing the spread of fire.
• Compact Size: Allows for efficient use of space in electronic circuits.

Benefits:

• Reliable Performance: Ensures consistent operation even under harsh conditions.
• Precise Resistance: Provides accurate resistance values for critical applications.
• Long Lifespan: Offers extended operational life, reducing maintenance costs.
• Safe Operation: Flameproof coating enhances safety in case of overload.
• Easy Integration: Simple mounting options allow for easy integration into various circuit designs.
• Efficient Heat Dissipation: Effectively dissipates heat, preventing overheating and ensuring long-term reliability.

Additional Details:

The AP750 series resistors typically feature a ceramic core and a high-temperature coating. The resistance element is typically a precision wirewound element. These resistors are designed for chassis mounting to provide optimal heat sinking. The exact specifications for the AP750 4R7 F, including its precise power rating and tolerance should be confirmed from the manufacturer's datasheet. This information includes crucial derating curves for operation at various ambient temperatures.