The UPB321611T-121Y-N is a surface mount multilayer chip bead inductor manufactured by Yageo. It's designed for high-frequency applications where impedance characteristics and noise suppression are critical. This component plays a vital role in filtering unwanted signals and improving the overall electromagnetic compatibility (EMC) of electronic circuits.

Applications

• Mobile phones and smartphones
• Wireless communication devices (Bluetooth, Wi-Fi)
• Digital cameras and camcorders
• Portable media players
• Automotive electronics
• Industrial control equipment

Features

• Small size (3216 footprint) for space-constrained applications
• Surface mount technology (SMT) for automated assembly
• Multilayer construction for high impedance and self-resonant frequency
• Excellent noise suppression characteristics
• RoHS compliant
• Operating Temperature: -55°C to +125°C
• Storage Temperature: -10°C to +40°C

Benefits

• Improved signal integrity by reducing noise and interference
• Enhanced EMC performance for compliance with regulatory standards
• Smaller and lighter designs due to the component's compact size
• Cost-effective solution for noise filtering
• Reliable performance in harsh environments

Additional Details

The '121Y' designation likely refers to the impedance value at 100 MHz, which in this case is 120 ohms. The 'N' at the end might represent the packaging type or other specific characteristics. The component’s inductance value is typically very low, focusing primarily on resistive impedance at higher frequencies. These chip beads are crucial for decoupling power lines and filtering noise on signal lines. Proper selection of the chip bead based on frequency and impedance requirements is essential for optimal performance. The component is designed to be reflow soldered onto a PCB. It is commonly used in circuits requiring compliance with FCC and CISPR standards.