US
UK
Taiwan
China
Singapore
+1-847-639-6400 sales@coilcraft.com
+44-1236-730595 sales@coilcraft-europe.com
+886-2-2264 3646 sales@coilcraft.com.tw
+86-21-6218 8074 sales@coilcraft.com.cn
+ 65-6484 8412 sales@coilcraft.com.sg
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
Mini Wideband Transformers
–
WBC
Document 424 -1
Document 424-1 Revised 09/13/11
Impedance Insertion Pins 4
–
6 (primary) Pins 1
–
3 (secondary) DC
Part ratio2 Bandwidth loss max L min3 DCR max4 L min3 DCR max4 imbalance5 Color
number1 Schematic pri : sec (MHz) (dB) (µH) (mOhm) (µH) (mOhm) max (mA) dot
WBC1-1L_ A 1 : 1 0.400 – 600 0.40 10 120 10 120 — Brown
WBC1-1TL_ B 1 : 1 0.250 – 750 0.58 9.5 75 9.5 75 36 Brown
WBC2-1TL_ B 1 : 2 0.200 – 500 0.50 10 120 20 150 8.5 Red
WBC3-1TL_ B 1 : 3 0.300 – 900 0.60 9 100 27 150 8.5 Orange
WBC4-1TL_ B 1 : 4 0.250 – 750 1.0 9 55 36 120 30 Yellow
WBC4-14L_ B 1 : 4 1.500 – 1200 2.0 2 50 8 100 15 Green
WBC4-1WL_ B 1 : 4 0.500 – 1000 0.90 5 80 20 120 10 White
WBC4-6TL_ B 1 : 4 0.300 – 700 0.65 9 80 36 200 7.5 Blue
WBC8-1L_ B 1 : 8 0.150 – 600 0.60 22 120 176 310 17 Gray
WBC9-1L_ B 1 : 9 0.300 – 500 0.54 9 80 81 230 5 White
WBC16-1TL_ B 1 : 16 0.600 – 300 0.80 5 80 80 230 5 Violet
WBC4-4L_ C 1 : 4 0.250 – 800 1.0 9 60 36 120 30 Yellow
6
43
1
Pr
iS
ec
6
43
2
1
Pr
iS
ec
6
5
43
2
1
Pr
iS
ec
A
B
C
1. When ordering, please specify termination and packaging codes:
WBC4-4LC
Termination: L = RoHS compliant tin-silver-copper (95.5/4/0.5) over silver-
palladium-platinum
Special order: S = non-RoHS tin-lead (63/37).
Packaging: C = 7″ machine-ready reel. EIA-481 embossed plastic tape
(750 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.
D = 13″ machine-ready reel. EIA-481 embossed plastic tape.
Factory order only, not stocked (2500 parts per full reel).
2. Impedance ratio is for the full primary winding to the full secondary winding.
3. Inductance measured at 100 kHz, 0.1 V, 0 Adc on an Agilent/HP 4192 or
equivalent.
4. DCR measured on a micro-ohmmeter.
5. DC imbalance is the maximum difference in current measured at pins 1 and 3
with the source at pin 2. Inductance drop is 15% at maximum imbalance.
6. Electrical specifications at 25°C. Measurements are referenced to 50 Ohms.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Schematics
Designer’s Kit C393 contains three of each part
Core material Ferrite
Terminations RoHS compliant tin-silver-copper over silver-plati-
num-glass frit. Other terminations available at additional cost.
Weight 68.0 – 88.8 mg
Ambient temperature –40°C to +85°C
Storage temperature Component: –40°C to +85°C.
Tape and reel packaging: –40°C to +80°C
Resistance to soldering heat Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /
85% relative humidity)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
60 per billion hours / 16,666,667 hours, calculated per Telcordia SR-332
Packaging 750/7″reel; 2500/13″ reel Plastic tape: 12 mm wide,
0.3 mm thick, 8 mm pocket spacing, 2.9 mm pocket depth
PCB washing Only pure water or alcohol recommended
• Smallestwidebandtransformer:4mmsquare3mmhigh
• 300Vrmsinterwindingisolation,1/4WattRFinputpower
• 250mAmaxcurrentrating.
US
UK
Taiwan
China
Singapore
+1-847-639-6400 sales@coilcraft.com
+44-1236-730595 sales@coilcraft-europe.com
+886-2-2264 3646 sales@coilcraft.com.tw
+86-21-6218 8074 sales@coilcraft.com.cn
+ 65-6484 8412 sales@coilcraft.com.sg
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
WBC Series SMT Mini Wideband Transformers
Document 424-2 Revised 09/13/11
Document 424-2
0.175
4,45 max
0.120
3,05 max
0.120
3,05
0.030
0,76
0.030
0,76
0.150
3,81
0.150
3,81
0.040
1,02
0.060
1,52
0.060
1,52
Dot indicates pin 1
0.045
1,14
max
0.165
4,19
Recommended
Land Pattern
1
1
6
6
2
2
5
5
3
3
4
4
*
*
Nominal dimensions
of the substrate
*
Dimensions
Dimensions are in inches
mm
US
UK
Taiwan
China
Singapore
+1-847-639-6400 sales@coilcraft.com
+44-1236-730595 sales@coilcraft-europe.com
+886-2-2264 3646 sales@coilcraft.com.tw
+86-21-6218 8074 sales@coilcraft.com.cn
+ 65-6484 8412 sales@coilcraft.com.sg
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
WBC Series SMT Mini Wideband Transformers
Document 424-3 Revised 09/13/11
Document 424-3
0
1
2
3
4
5
10.10.01 10 100 100001000
Attenuation (dB)
Frequency (MHz)
WBC1-1
3 dB bandwidth: 0.400 – 600 MHz
0
1
2
3
4
5
10.10.01 10 100 100001000
Attenuation (dB)
Frequency (MHz)
WBC1-1T
3 dB bandwidth: 0.250 – 750 MHz
0
1
2
3
4
5
10.10.01 10 100 100001000
Attenuation (dB)
Frequency (MHz)
WBC2-1T
3 dB bandwidth: 0.200 – 500 MHz
0
1
2
3
4
5
10.10.01 10 100 100001000
Attenuation (dB)
Frequency (MHz)
WBC3-1T
3 dB bandwidth: 0.300 – 900 MHz
0
1
2
3
4
5
10.10.01 10 100 100001000
Attenuation (dB)
Frequency (MHz)
WBC4-1T
3 dB bandwidth: 0.250 – 750 MHz
0
1
2
3
4
5
10.10.01 10 100 100001000
Attenuation (dB)
Frequency (MHz)
WBC4-14
3 dB bandwidth: 1.500 – 1200 MHz
0
1
2
3
4
5
10.10.01 10 100 100001000
Attenuation (dB)
Frequency (MHz)
WBC4-1W
3 dB bandwidth: 0.500 – 1000 MHz
0
1
2
3
4
5
10.10.01 10 100 100001000
Attenuation (dB)
Frequency (MHz)
WBC4-6T
3 dB bandwidth: 0.300 – 700 MHz
0
1
2
3
4
5
10.10.01 10 100 100001000
Attenuation (dB)
Frequency (MHz)
WBC8-1
3 dB bandwidth: 0.150 – 600 MHz
0
1
2
3
4
5
10.10.01 10 100 100001000
Attenuation (dB)
Frequency (MHz)
WBC9-1
3 dB bandwidth: 0.300 – 500 MHz
0
1
2
3
4
5
10.10.01 10 100 100001000
Attenuation (dB)
Frequency (MHz)
WBC16-1T
3 dB bandwidth: 0.600 – 300 MHz
0
1
2
3
4
5
10.10.01 10 100 100001000
Attenuation (dB)
Frequency (MHz)
WBC4-4
3 dB bandwidth: 0.250 – 800 MHz
Attenuation measured on a network analyzer (re: 50 Ohms)