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The BKP1005HS121-T is a high-current, surface-mount ferrite bead from Taiyo Yuden, part of the BK series. This compact EMI suppression component provides 120 Ohms impedance at 100 MHz in an ultra-miniature 0402 package, specifically designed for power line noise filtering applications. With a robust 1A current rating and low 140mOhm DC resistance, it delivers effective high-frequency noise suppression while minimizing power loss, making it ideal for power supply lines, DC-DC converter outputs, and portable electronic devices requiring space-efficient EMI filtering.
Category:Filters;Ferrite Beads and Chips
Manufacturer:Taiyo Yuden
Series:BK
Packaging:Tape & Reel (TR)
Filter Type:Power Line
Number of Lines:1
Impedance @ Frequency:120 Ohms @ 100 MHz
Current Rating (Max):1A
DC Resistance (DCR) (Max):140mOhm
Operating Temperature:-55°C ~ 85°C
Package / Case:0402 (1005 Metric)
Mounting Type:Surface Mount
Height (Max):0.022" (0.55mm)
Size / Dimension:0.039" L x 0.020" W (1.00mm x 0.50mm)
Power Line Optimization: Specifically designed for power line filtering, effectively attenuating high-frequency noise on DC power rails.
High Current Capability: Supports up to 1A continuous current, suitable for power supply lines in portable and compact electronic devices.
Effective Noise Suppression: Provides 120 Ohms impedance at 100 MHz, offering excellent attenuation of switching noise and EMI in the critical frequency range.
Low DC Resistance: Maximum 140 mOhm DCR minimizes power loss and voltage drop, preserving power delivery efficiency.
Ultra-Compact 0402 Package: Tiny 1.00mm x 0.50mm footprint enables high-density PCB layouts in space-constrained designs such as smartphones and wearables.
Wide Operating Temperature: -55°C to 85°C range accommodates commercial and industrial environments.
RoHS Compliant: Lead-free construction meets global environmental requirements.
Smartphones and Tablets: Filters noise on battery power lines, charging circuits, and power management IC inputs to ensure clean power delivery to sensitive RF and processor circuits.
Wearable Devices: Provides EMI suppression on power lines in smartwatches, fitness trackers, and wireless earbuds where PCB space is extremely limited.
DC-DC Converter Outputs: Attenuates switching noise on the output of buck and boost converters in portable electronics, ensuring clean power for analog and RF sections.
Wireless Communication Modules: Filters power supply lines for Wi-Fi, Bluetooth, and cellular modules to prevent EMI coupling into RF front-ends.
Digital Cameras and Portable Media Players: Suppresses noise on power rails feeding image sensors, processors, and display drivers for improved image quality and system stability.
Medical Portable Devices: Used in glucose meters, digital thermometers, and portable monitors requiring clean power for accurate sensor measurements.
IoT Devices: Filters power lines in smart sensors, home automation nodes, and industrial wireless devices to ensure reliable operation in noisy environments.
The Taiyo Yuden BKP1005HS121-T is a high-performance, space-saving ferrite bead that combines 120 Ohms impedance, 1A current capability, and low 140 mOhm DCR in an ultra-compact 0402 package. Its power line optimization, effective noise suppression, and miniature footprint make it an ideal choice for EMI filtering in smartphones, wearables, wireless modules, and portable electronic devices requiring clean power delivery in space-constrained designs.
Industry Information
