The RB57-680RJI is a wirewound resistor manufactured by TT Electronics. Wirewound resistors are created by winding a resistance wire around a non-conductive core. They are known for their high precision, stability, and ability to handle high power. The '680R' indicates a resistance value of 680 ohms. The other characters likely relate to tolerance and packaging.

Applications:

• Power Supplies: Used as current-limiting resistors and voltage dividers in power supplies.
• Load Resistors: Employed as load resistors in amplifier circuits and testing equipment.
• Current Sensing: Senses current flow in various electronic circuits.
• Braking Resistors: Used in motor drives for dynamic braking.
• High-Power Amplifiers: Provides stable resistance in amplifier circuits.

Features:

• High Precision: Offers precise resistance values.
• High Stability: Maintains stable resistance over a wide temperature range.
• High Power Handling: Capable of dissipating significant amounts of power.
• Low Temperature Coefficient: Resistance changes minimally with temperature variations.
• RoHS Compliant: Complies with RoHS directives, ensuring environmental friendliness.

Benefits:

• Accurate Circuit Performance: Precise resistance ensures accurate circuit operation.
• Reliable Operation: Stable resistance guarantees reliable performance over time.
• Robust Design: High power handling capability ensures robust performance in demanding applications.
• Minimal Drift: Low temperature coefficient minimizes resistance drift with temperature changes.
• Environmental Compliance: RoHS compliance ensures that the product is environmentally friendly.

Technical Specifications:

To obtain the most accurate specifications, the official datasheet from TT Electronics should be consulted. However, typical parameters for wirewound resistors include:

• Resistance Value: 680 ohms (indicated by '680R').
• Tolerance: Specifies the acceptable deviation from the nominal resistance value.
• Power Rating: Specifies the maximum power the resistor can dissipate without damage.
• Temperature Coefficient of Resistance (TCR): Indicates how much the resistance changes per degree Celsius.
• Operating Temperature Range: Indicates the range of temperatures the resistor can operate within.