BK1005LL181-T

Overview

The BK1005LL181-T is a multilayer chip bead inductor from the Taiyo Yuden BK series, designed for surface-mount applications. It features a 0402 (1005 metric) package with dimensions of 1.00mm x 0.50mm and a maximum height of 0.55mm. The component provides an impedance of 180 Ohms at 100 MHz with a tolerance of 25%. It supports a maximum DC current of 300mA and has a maximum DC resistance of 500 milliohms. The operating temperature range spans from -55°C to 125°C.

Feature Summary

• Multilayer construction for high-frequency noise suppression
• Compact 0402 surface-mount footprint
• High-temperature stability up to 125°C

Applications

• EMC noise filtering in portable devices
• Signal line protection in mobile communications
• Power supply noise suppression in compact electronics

Procurement Notes

This component is officially discontinued by Taiyo Yuden as per Product Change Notification documents dated February 25, 2021. Verify end-of-life status before design finalization. Sourcing is restricted to remaining stock or authorized distributors. Confirm RoHS3 compliance and MSL Level 1 classification during verification. Check for parameter-equivalent alternatives if production continuity is required.

Selection Notes

Select this part for space-constrained designs requiring 180 Ohm impedance at 100 MHz. Ensure the circuit current does not exceed 300mA to prevent saturation. The 0402 package limits thermal dissipation; verify PCB layout for adequate copper area. Consider the discontinuation status when planning long-term manufacturing cycles. Validate impedance characteristics against specific frequency requirements in the target application environment.

Part Context

Part of the BK series multilayer chip bead inductors. Designed for high-density PCB layouts. Uses ceramic ferrite materials for effective broadband noise absorption. Standardized metric dimensions facilitate automated placement. Commonly used in consumer electronics and telecommunications equipment where size and performance are critical constraints.

Replacement Considerations

BBSY00100505181Y00 by Pulse Electronics is listed as a parameter-equivalent substitute.