The LR2512-R033FW is a current sense resistor manufactured by TT Electronics. It is a part of their LR series of low resistance, high power resistors designed for precise current measurement and control in a variety of applications.

Applications

• Power supplies: Used for current sensing in power supplies to provide feedback for regulation and overcurrent protection.
• Motor control: Employed in motor control circuits to monitor motor current for efficient and safe operation.
• Battery management systems (BMS): Integrated into BMS to measure charge and discharge currents, ensuring optimal battery performance and longevity.
• Inverters: Used in inverters to monitor and control the current flow, protecting the inverter from overloads and short circuits.
• Automotive applications: Utilized in automotive electronic systems for current sensing in various circuits, such as lighting, engine management, and power distribution.

Features

• Low resistance value: R033 (0.033 ohms) allows for accurate current measurement with minimal impact on the circuit.
• High power rating: Designed to handle significant power dissipation, ensuring reliable performance in demanding applications.
• 2512 package size: Industry-standard 2512 surface-mount package for easy integration into PCB layouts.
• Thick film construction: Provides excellent stability and reliability over a wide temperature range.
• Low inductance: Minimizes inductive effects, ensuring accurate current sensing at high frequencies.
• RoHS compliant: Meets RoHS environmental standards, ensuring compliance with regulations regarding hazardous substances.

Benefits

• Precise current sensing: The low resistance value and high accuracy enable precise current measurement for accurate control and protection.
• Improved efficiency: The low resistance minimizes power loss, improving overall system efficiency.
• Enhanced reliability: The thick film construction and high power rating ensure reliable performance in harsh environments.
• Simplified design: The standard 2512 package simplifies PCB layout and assembly.
• Overcurrent protection: Provides accurate current feedback for overcurrent protection, safeguarding sensitive components.
• Stable performance: Maintains stable resistance value over a wide temperature range, ensuring consistent performance.

Additional Details

The LR2512-R033FW resistor is constructed using a thick film resistive element on a ceramic substrate. It features a power rating suitable for demanding applications and offers excellent long-term stability. The resistor's low inductance characteristic makes it suitable for high-frequency current sensing applications. Its resistance tolerance is typically very tight, ensuring accurate current measurement. The operating temperature range is broad, typically spanning from -55°C to +155°C. These resistors are designed for automatic placement and reflow soldering, facilitating efficient manufacturing processes.