5 / 6 page
© Coilcraft, Inc. 2009
Specifications subject to change without notice.
Please check our website for latest information.
Document 260-5
Document 260-5
Revised 09/09/09
Common Mode Chokes - BU15 Series
Frequency range
Inductance2
Inductance difference
Impedance max
@ 75% of
DCR1
Current
L1, L2
L1 - L2
Part number
(kOhms)
impedance max
(Ohms)
max (Aac)
min (mH)
max (µH)
BU15-4530R4BL
400 @ 230 kHz
140 – 160 kHz
3.0
0.40
45.0
300
BU15-1430R7BL
115 @ 470 kHz
400 – 650 kHz
1.0
0.70
14.0
300
BU15-7521R0BL
60 @ 600 kHz
420 – 720 kHz
0.6
1.00
7.5
150
BU15-4421R3BL
36 @ 670 kHz
430 – 1000 kHz
0.3
1.30
4.4
100
BU15-2721R6BL
20 @ 1000 kHz
510 – 1400 kHz
0.2
1.60
2.7
60
Typical Attenuation
Typical Impedance
0.177 ±0.04
4,5 ±1,0
0.40 ±0.02
10,0 ±0,5
0.40 ±0.02
10,0 ±0,5
0.91
23,0
max
max
1.08
27,5
Æ
0.028
0,7
Æ
0.047
1,2
max
0.75
19,0
0.51 ±0.02
13,0 ±0,5
0.51 ±0.02
13,0 ±0,5
Dot
indicates
pin 1
2
1
3
4
3
3
2
2
2
4
4
4
1
1
1
1
Recommended
Board Layout
1. DCR is per winding
2. Inductance tested at 1 kHz, 1 Vrms, 0 Adc on an Agilent/HP 4284A LCR-meter or equivalent.
3. 1000 Vrms typical isolation between windings.
4. Electrical specifications at 25°C.