Inductor Finders Power  |   RF
Power Magnetics Tools
RF Inductor Tools
New! CM Choke Finder
New! LC Filter Designer
IC / Inductor Match Tool
Application Notes
Other Resources
Designer's Kits

BU9/9H Series
Common Mode Chokes

  • For power supply circuits
  • Up to 60 kOhms impedance
  • BU9H are low profile – only 12,5 mm high
  • 1000 Vrms, one minute isolation (hipot) between windings
  • Refer to Designing Common Mode Filters for design guidance.
  • RoHS-compliant. 260°C compatible. Tin-silver over copper terminations.

Part number
Click to get parts
Impedance
max  (kOhms)
Frequency range
at 75% of
impedance
max (kHz)
DCR max1
(Ohms)
Current
Iac max
(A)
Inductance2
L1, L2 min
(mH)
Inductance
difference
L1 − L2
max (µH)
BU9-103R25BL 60 @ 220 kHz 200 – 240 3.5 0.3 10.0 200
BU9-2820R5BL 53 @ 410 kHz 310 – 430 1.0 0.5 2.8 50
BU9-1320R7BL 52 @ 660 kHz 600 – 700 0.5 0.7 1.3 50
BU9-6011R0BL 36 @ 1300 kHz 1200 – 1400 0.2 1.0 0.6 25
BU9-2011R6BL 5.4 @ 1500 kHz 900 – 2100 0.1 1.6 0.2 25
BU9H-103R25BL 60 @ 220 kHz 200 – 240 3.5 0.3 10.0 200
BU9H-2820R5BL 53 @ 410 kHz 310 – 430 1.0 0.5 2.8 50
BU9H-1320R7BL 52 @ 660 kHz 600 – 700 0.5 0.7 1.3 50
BU9H-6011R0BL 36 @ 1300 kHz 1200 – 1400 0.2 1.0 0.6 25
BU9H-2011R6BL 5.4 @ 1500 kHz 900 – 2100 0.1 1.6 0.2 25
1 DCR is per winding measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
2 Inductance tested at 1 kHz, 1 Vrms, and it is measured on Agilent/HP 4263B LCR meter or equivalent.
3 Operating temperature range −40°C to +125°C Details
4 Electrical specifications at 25°C.

Typical Attenuation

Typical Impedance

BU9

BU9H



Weight: 3.1 – 4.1 g



Weight: 3.1 – 4.1 g


Home | Design Tools | Samples | Kits | Price + Stock | Sales | Support | Jobs | Index
Your comments and suggestions are welcome. Contact webmaster@coilcraft.com
Copyright © 2017, Coilcraft, Inc.   Privacy policy
Updated: April 12, 2017