© Coilcraft, Inc. 2009
Specifications subject to change without notice.
Please check our website for latest information.
Document 260-1
Document 260-1
Revised 09/09/09
Common Mode Chokes – BU Series
These low cost, high performance choke coils are de-
signed to virtually eliminate line conducted common
mode noise.
The BU9S and BU9HS families are ideal for signal line
applications; the others can be used in switching power
supplies and power supply circuits. All provide signifi-
cant attenuation of common mode noise across a broad
range of frequencies.
For height-restricted applications, the BU9 and BU9S
filters are available in a horizontal configuration, which
reduces their height to under half an inch (12.5 mm).
For free evaluation samples, contact Coilcraft or request
them on-line at www.coilcraft.com.
Core material Ferrite
Terminations RoHS compliant tin-silver over copper. Other terminations available at additional cost.
Weight BU9: 3.1 – 4.1 g
BU9H: 3.1 – 4.1 g
BU9HS: 3.1 – 3.8 g
BU9S: 3.1 – 3.8 g
BU10: 6.2 – 6.6 g
BU15: 14.6 – 16.1 g
BU16: 15.1 – 18.0 g
Ambient temperature –40°C to +125°C
Storage temperature Component: –40°C to +125°C.
Packaging: –40°C to +80°C
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C / 85% relative humidity)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
Packaging BU9: 100 per tray
BU9H: 100 per tray
BU9HS: 100 per tray
BU9S: 100 per tray
BU10: 100 per tray
BU15: 80 per tray
BU16: 80 per tray
PCB washing Only pure water or alcohol recommended
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