The RD41B2ET9R1J is a surge current limiting resistor manufactured by KOA Speer. These resistors are designed to protect electronic circuits from damage caused by sudden surges of electrical current, such as those that can occur during power-up, lightning strikes, or electrostatic discharge (ESD) events. They are commonly used in power supplies, inrush current limiting circuits, and other applications where surge protection is critical.

Applications:

• Power Supplies: Used to limit inrush current during startup, protecting sensitive components from damage.
• Lighting Systems: Protects LED drivers and other components from voltage spikes.
• Industrial Equipment: Provides surge protection for control systems and other industrial electronics.
• Consumer Electronics: Safeguards devices like TVs, computers, and appliances from power surges.
• Telecommunications Equipment: Protects sensitive circuits in communication systems.

Features:

• Surge Current Limiting: Designed to withstand and limit high surge currents.
• Compact Size: Small form factor allows for easy integration into various circuits.
• High Reliability: Built with robust materials and construction for long-term performance.
• Flame Retardant Coating: Enhances safety by preventing fire hazards.
• RoHS Compliant: Environmentally friendly, meeting RoHS standards for hazardous substances.

Benefits:

• Protection of Sensitive Components: Prevents damage to downstream components from surge currents.
• Increased System Reliability: Extends the lifespan of electronic devices by mitigating the impact of surges.
• Enhanced Safety: Reduces the risk of electrical fires and other hazards.
• Cost-Effective Solution: Provides a simple and affordable way to protect electronic circuits.
• Easy Integration: Can be easily incorporated into existing circuit designs.

Additional Details:

The RD41B2ET9R1J resistor features a resistance value of 9.1 ohms. KOA Speer's surge current limiting resistors are manufactured using advanced thick film technology, ensuring stable and reliable performance. The specific surge current capability and other electrical characteristics can be found in the manufacturer's datasheet. They are available in various resistance values and sizes to suit different application requirements. Proper selection of the resistor based on the expected surge current and circuit voltage is essential for effective protection.