2 / 6 page © Coilcraft, Inc. 2009 Specifications subject to change without notice. Please check our website for latest information. Document 260-2 Document 260-2 Revised 09/09/09 Common Mode Chokes - BU9, BU9H 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) BU9-103R25BL 60 @ 220 kHz 200 – 240 kHz 3.5 0.25 10.0 200 BU9-2820R5BL 53 @ 410 kHz 310 – 430 kHz 1.0 0.50 2.8 50 BU9-1320R7BL 52 @ 660 kHz 600 – 700 kHz 0.5 0.70 1.3 50 BU9-6011R0BL 36 @ 1300 kHz 1200 – 1400 kHz 0.2 1.00 0.6 25 BU9-2011R6BL 5.4 @ 1500 kHz 900 – 2100 kHz 0.1 1.60 0.2 25 BU9H-103R25BL 60 @ 220 kHz 200 – 240 kHz 3.5 0.25 10.0 200 BU9H-2820R5BL 53 @ 410 kHz 310 – 430 kHz 1.0 0.50 2.8 50 BU9H-1320R7BL 52 @ 660 kHz 600 – 700 kHz 0.5 0.70 1.3 50 BU9H-6011R0BL 36 @ 1300 kHz 1200 – 1400 kHz 0.2 1.00 0.6 25 BU9H-2011R6BL 5.4 @ 1500 kHz 900 – 2100 kHz 0.1 1.60 0.2 25 Typical Attenuation Typical Impedance BU9 BU9H 3 3 2 2 2 4 4 4 1 1 1 1 Dot indicates pin 1 0.69 17,5 max max 0.67 17,0 0.157 ±0.04 4,0 ±1,0 max 0.43 11,0 2 1 3 4 0.31 ±0.02 8,0 ±0,5 0.31 ±0.02 8,0 ±0,5 0.276 ±0.02 7,0 ±0,5 0.276 ±0.02 7,0 ±0,5 Recommended Board Layout 0.040 1,0 Æ 0.024 0,6 Æ 3 Æ 3 2 2 2 4 4 4 1 1 1 1 Æ 0.024 0,6 Dot indicates pin 1 0.69 17,5 max max 0.49 12,5 0.157 ±0.04 4,0 ±1,0 max 0.61 15,5 max 0.43 11,0 2 1 3 4 0.31 ±0.02 8,0 ±0,5 0.31 ±0.02 8,0 ±0,5 0.276 ±0.02 7,0 ±0,5 0.276 ±0.02 7,0 ±0,5 0.040 1,0 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. |
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