1120-221K-RC footprint, schematic symbol and 3D model by Bourns

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1120-221K-RC Details

Bourns recommends a symmetrical PCB layout with the resistor centered between the power planes to minimize inductive coupling. A minimum of 0.5 mm clearance around the resistor is recommended to ensure proper heat dissipation.
The 1120-221K-RC is designed for high-frequency applications up to 1 GHz. It exhibits low inductance and capacitance, making it suitable for RF and microwave circuits. However, it's essential to consider the PCB layout and parasitic effects when operating at high frequencies.
The maximum power rating for the 1120-221K-RC is 1 W. However, it's essential to consider the operating temperature, PCB layout, and airflow when designing the circuit to ensure the resistor operates within its power rating.
Yes, the 1120-221K-RC is designed for high-reliability applications. It's built with a rugged construction and meets the requirements of various military and aerospace standards, including MIL-PRF-55342 and ESCC 4001.
The typical tolerance for the 1120-221K-RC is ±1%. However, it's essential to check the specific tolerance for the desired resistor value, as it may vary depending on the production batch and manufacturing process.

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