Document 334-1
Broadband Conical Inductors
Coilcraft’s conical inductors are designed specifically for
broadband and high frequency applications. This single
component operates as a series of narrow-band induc-
tors throughout an operating frequency range of 10 MHz
to 40 GHz.
These conical inductors are ideal for use in ultra-wide-
band bias T’s. In this application, the conical inductor
provides the path for the DC bias injection or extraction
while isolating the power source from the active device.
The BCL versions are supplied with “flying leads” that
allow adjustment of the mounting angle. Each surface
mount BCS inductor has a self positioning mounting
bracket.
To request evaluation samples, contact Coilcraft.
DCR
Part number
Inductance
2
max
Irms
3
1
Surface mount Flying lead ±5% (µH) (Ohms) (mA)
BCS-531JL_ BCL-531JL
0.53
0.15
830
BCS-122JL_ BCL-122JL
1.2
1.05
200
BCS-652JL_ BCL-652JL
6.5
0.70
510
BCS-802JL_ BCL-802JL
8.0
3.39
150
1. When ordering, please specify
packaging
code:
Packaging:
BCS-802JLC
C
= 7″ machine-ready reel. EIA-481 embossed plastic tape
(BCS-122JL: 500 parts per full reel;
BCS-531JL and 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.
Response curves measured in a bias tee
configuration with an Agilent/HP 8722ES
network analyzer.
Port 1
1
Port 2
2
2. Inductance measured at 10 MHz, 0.1 Vrms, 0 Adc using an Agilent/
HP 16092A fixture in an Agilent/HP 4291A impedance analyzer.
3. Current that causes a 40°C temperature rise from 25°C ambient.
4.
Ambient temperature range:
–40°C to +85°C
5.
Storage temperature range:
Component: –40°C to +85°C
Packaging: –40°C to +80°C
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Insertion Loss
(BCL and BCS)
0
Return Loss
(BCL and BCS)
0
-652
0.5
10
-531
S21 (dB)
S11 (dB)
1.0
-122
-802
20
-802
-122
-652
1.5
30
2.0
2.5
0.05
10
20
30
40
40
50
0.05
10
20
30
-531
40
Frequency (GHz)
Specifications subject to change without notice.
Please check our website for latest information.
Frequency (GHz)
Document 334-1
Revised 10/30/08
© Coilcraft, Inc. 2009
Document 334-2
Broadband Conical Inductors
BCL
C
L
D
B
2
C
∝
PC board
1
E
A (ID)
∝
Optimum mounting angle is application specific.
Packaging:
25 per tray
Terminations:
Tin-silver over copper
Weights:
BCL-531: 20 mg; BCL-122: 6 mg; BCL652: 155 mg; BCL802: 26 mg
BCL-531
BCL-122
BCL-652
BCL-802
A
0.008 ±0.002 /
0,20
0.008 ±0.002 /
0,20
0.008 ±0.002 /
0,20
0.008 ±0.002 /
0,20
±0,05
±0,05
±0,05
±0,05
B max
0.071 /
1,80
0.045 /
1,14
0.140 /
3,56
0.074 /
1,88
C max
0.179 /
4,55
0.104 /
2,64
0.418 /
10,62
0.225 /
5,72
D (±0.010 /
2,54)
0.166 /
4,22
0.166 /
4,22
0.390 /
9,91
0.180 /
4,57
E (±0.010 /
2,54)
0.100 /
2,54
0.100 /
2,54
0.100 /
2,54
0.100 /
2,54
Dimensions (inches /
millimeters
)
BCS-122
Top View
BCS-531, BCS-802
Top View
A
A
BCS-652
Top View
A
B
B
B
Side View
Side View
Side View
Front View
C
C
Front View
Front View
C
Recommended
Land Pattern
D
D
2
Recommended
Land Pattern
2
D
2
Recommended
Land Pattern
F
F
1
F
*
D
D
E
*
1
D
D
D
E
*
D
E
1
D
D
*
Pad is for mounting stability only. Do not connect to circuit.
Terminations:
Tin-silver-copper over silver-platinum-glass frit
Weights:
BCS-122: 19 mg; BCS-531: 71 mg; BCS-802: 77 mg; BCS-652: 329 mg
A
BCS-531 0.150 ±0.010/
3,81±0,25
BCS-122 0.100 ±0.010 /
2,54 ±0,25
BCS-652 0.220 ±0.010 /
5,59 ±0,25
BCS-802 0.150 ±0.010 /
3,81 ±0,25
Dimensions (inches /
millimeters
)
B
0.220 ±0.010 /
5,59 ±0,25
0.120 ±0.010 /
3,05 ±0,25
0.440 ±0.010 /
11,18 ±0,25
0.220 ±0.010 /
5,59 ±0,25
C
0.160 ±0.010 /
4,06 ±0,25
0.110 ±0.010 /
2,79 ±0,25
0.220 ±0.010 /
5,59 ±0,25
0.160 ±0.010 /
4,06 ±0,25
D
0.040 /
1,02
0.030 /
0,76
0.050 /
1,27
0.040 /
1,02
E
0.150 /
3,81
0.070 /
1,78
0.360 /
9,14
0.150 /
3,81
F
0.080 /
2,03
0.050 /
1,27
0.140 /
3,56
0.080 /
2,03
Specifications subject to change without notice.
Please check our website for latest information.
Document 334-2
Revised 10/30/08
© Coilcraft, Inc. 2009
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