Site Settings

Warehouses
Language settings
Currency settings
Resources
Video Library
Cx Family Common Mode Chokes
0402CT Low Profile Chip Inductors
XAL7050 High-inductance Shielded Power Inductors
XGL4020 Ultra-low DCR Power Inductors

BU Series

Power Line Common Mode Chokes

RoHS compliant
  • Significant noise attenuation over a wide range of frequencies
  • Compact size and light weight
  • Independent windings allow use in high-voltage signal lines
  • 1000 Vrms, one minute isolation (hipot) between windings
  • Refer to Designing Common Mode Filters for design guidance.
  • RoHS-compliant. Tin-silver over copper terminations.
Buy Now:
Count Unit price
1 $1.35
100 $1.08
400 $0.94
1200 $0.74
2400 $0.63
5000 $0.57

For high volume or non-stock items, request a quote.

. in stock, ready to ship today.
Request a Sample:

Specifications

Electrical specifications at 25°C.

BU9S, BU9HS

Part number Lines Common mode
peak impedance (kΩ)
Inductance
min (mH) 1
Irms (A) DCR max (Ω) 2 Isolation
Voltage (Vrms) 3
BU9S-153R15BL 2 106 @ 200 kHz 15 0.15 5.0 1000
BU9S-7020R3BL 2 59.8 @ 370 kHz 7.0 0.30 2.5 1000
BU9HS-153R15BL 2 147 @ 220 kHz 15 0.15 5.0 1000
BU9HS-7020R3BL 2 61.9 @ 380 kHz 7.0 0.30 2.5 1000

BU9, BU9H

Part number Lines Common mode
peak impedance (kΩ)
Inductance
min (mH) 1
Irms (A) DCR max (Ω) 2 Isolation
Voltage (Vrms) 3
BU9-103R25BL 2 124 @ 250 kHz 10 0.25 3.5 1000
BU9-2820R5BL 2 25.1 @ 660 kHz 2.8 0.50 1.0 1000
BU9-1320R7BL 2 17.3 @ 910 kHz 1.3 0.70 0.50 1000
BU9-6011R0BL 2 5.43 @ 2100 kHz 0.60 1.0 0.20 1000
BU9-2011R6BL 2 3.62 @ 4000 kHz 0.20 1.6 0.10 1000
BU9H-103R25BL 2 148 @ 230 kHz 10 0.25 3.5 1000
BU9H-2820R5BL 2 29.8 @ 600 kHz 2.8 0.50 1.0 1000
BU9H-1320R7BL 2 12.3 @ 980 kHz 1.3 0.70 0.50 1000
BU9H-6011R0BL 2 5.47 @ 2000 kHz 0.60 1.0 0.20 1000
BU9H-2011R6BL 2 4.43 @ 2700 kHz 0.20 1.6 0.10 1000

BU10

Part number Lines Common mode
peak impedance (kΩ)
Inductance
min (mH) 1
Irms (A) DCR max (Ω) 2 Isolation
Voltage (Vrms) 3
BU10-1811R2BL 2 5.27 @ 1200 kHz 0.18 1.2 0.20 1000
BU10-1311R6BL 2 3.60 @ 1200 kHz 0.13 1.6 0.12 1000
BU10-1012R2BL 2 1.88 @ 1500 kHz 0.100 2.2 0.080 1000
BU10-6003R0BL 2 1.15 @ 2100 kHz 0.060 3.0 0.040 1000

BU15

Part number Lines Common mode
peak impedance (kΩ)
Inductance
min (mH) 1
Irms (A) DCR max (Ω) 2 Isolation
Voltage (Vrms) 3
BU15-4530R4BL 2 399 @ 130 kHz 45 0.40 3.0 1000
BU15-4530R4BL 2 70.6 @ 240 kHz 14 0.70 1.0 1000
BU15-2721R6BL 2 43.1 @ 340 kHz 7.5 1.0 0.60 1000
BU15-7521R0BL 2 41.1 @ 510 kHz 4.4 1.3 0.30 1000
BU15-1430R7BL 2 32.2 @ 620 kHz 2.7 1.6 0.20 1000

BU16

Part number Lines Common mode
peak impedance (kΩ)
Inductance
min (mH) 1
Irms (A) DCR max (Ω) 2 Isolation
Voltage (Vrms) 3
BU16-4530R5BL 2 270 @ 130 kHz 45 0.50 2.3 1000
BU16-2530R7BL 2 208 @ 190 kHz 25 0.70 1.3 1000
BU16-1031R0BL 2 57.1 @ 310 kHz 10 1.0 0.50 1000
BU16-4021R5BL 2 26.3 @ 470 kHz 4.0 1.5 0.30 1000
BU16-2022R0BL 2 14.5 @ 720 kHz 2.0 2.0 0.20 1000
Notes
  1. Inductance tested at 1 kHz, 1 Vrms, and it is measured on Agilent/HP 4263B LCR meter or equivalent.
  2. DCR is per winding measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
  3. Interwinding isolation (hipot) tested for one minute.

Termination:

  • RoHS compliant tin-silver over copper. Other terminations available at additional cost.
Environmental
Environmental:
RoHS compliant
Ambient temperature range:
–40°C to +125°C
Storage temperature range:
Component: –40°C to +125°C
Tray packaging: –40°C to +80°C
Failures in Time (FIT) / Mean Time Between Failures (MTBF):
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332

Physical characteristics

BU9S  

bu9s_schem.png

BU9HS 

bu9hs_schem.png

BU9

bu9_schem.png

BU9H

bu9h_schem.png

BU10

bu10_schem.png

BU15

bu15_schem.png

BU16

bu16_schem.png
 

General specification

Core Material:
Ferrite
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: 6.3 – 6.9 g; BU15: 14.6 – 16.1 g; BU16: 15.1 – 18.0 g
Packaging:
BU9/ BU9H/ BU9HS/ BU9S/ BU10: 100 per tray; BU15/ BU16: 80 per tray

Washing

Moisture Sensitivity Level (MSL):
1 (unlimited floor life at <30°C / 85% relative humidity)
PCB Washing:
Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.

Related product families