Coilcraft BCS SMT Broadband Conical Inductors
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Surface Mount
Broadband Conical Inductors

For new designs, consider the BCR as an alternative. The BCR is electrically identical, and has a much more rugged package. It features a full length cover that completely protects the coil and four mounting pads for excellent board adhesion. We will continue to manufacture and support the BCS series indefinitely.
  • Self positioning mounting bracket for pick and place.
  • Operates as a series of narrow band inductors
  • Flat bandwidth with high impedance to 40 GHz.
  • Limits effects caused by stray capacitance
  • Ideal for use in bias Tees
  • RoHS Compliant. 260°C compatible. Tin-silver-copper over silver-platinum-glass frit terminations.
  • See our BCL for a "flying leads" version that allows adjustment of the mounting angle.


Part number1 Inductance2
±5% (µH)
DCR max3
BCS-531JL_ 0.53 0.15 830
BCS-122JL_ 1.20 1.05 200
BCS-652JL_ 6.5 0.70 510
BCS-802JL_ 8.0 3.39 150
1 When ordering, please specify packaging code: e.g. BCS-802JLC
  Packaging: C = 7" machine-ready reel.
EIA-481 embossed plastic tape:
BCS-122JL: 500 parts per full reel
BCS-531JL: 300 parts per full reel
BCS-802JL: 300 parts per full reel
BCS-652JL: 200 parts per full reel
B = Less than full reel.
In tape, but not machine ready. To have a leader and trailer added ($25 charge), use code letter C instead.
2 Inductance measured at 10 MHz, 0.1 Vrms, 0 Adc using an Agilent/HP 16193A fixture in an Agilent/HP 4287A LCR meter or equivalents.
3 DCR measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
4 Irms: Current that causes a 40°C rise from 25°C ambient. Details
5 Ambient temperature range: −40°C to +85°C
6 Storage temperature range: Component: −40°C to +85°C
Tape and reel packaging: −40°C to +80°C
7 Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between.
8 Electrical specifications at 25°C.
Refer to Soldering Coilcraft Components before soldering.
PCB washing: Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.

Your comments and suggestions are welcome. Contact [email protected]
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Updated: April 16, 2018