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. 2017
This product may not be used in medical or high
risk applications without prior Coilcraft appr
oval.
Specification subject to change without notice.
Please check web site for latest infor
mation.
Mini Wideband Transformers
–
WBC
Document 424 -1
Document 424-1 Revised 07/01/15
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_ D 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
Pri Sec
66
44
33
22
11
Pr
iP
riSec
Sec
6
5
43
2
1
Pri Sec
A
B
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-
platinum -glass frit.
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 Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCBt_Washing.pdf.
• Smallest wideband transformer: 4 mm square 3 mm high
• 300 Vrms interwinding isolation, 1/4 Watt RF input power
• 250 mA max current rating.
C
D
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. 2017
This product may not be used in medical or high
risk applications without prior Coilcraft appr
oval.
Specification subject to change without notice.
Please check web site for latest infor
mation.
WBC Series SMT Mini Wideband Transformers
Document 424-2 Revised 07/01/15
Document 424-2
Dimensions
Dimensions are in inches
mm
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
*
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. 2017
This product may not be used in medical or high
risk applications without prior Coilcraft appr
oval.
Specification subject to change without notice.
Please check web site for latest infor
mation.
WBC Series SMT Mini Wideband Transformers
Document 424-3 Revised 07/01/15
Document 424-3
Attenuation measured on a network analyzer (re: 50 Ohms)
5
4
3
2
1
0
0.01 0.1 110 100 1000
Attenuation (dB)
dB
Degrees
Frequency (MHz)
-6
-3
-12
-9
-15
3
6
9
0
0
-1
-2
-3
-4
-5
1
2
3
4
515
12
0.01
Phase imbalance
Magnitude imbalance
0.1 110 100 1000 1000010000
Frequency (MHz)
WBC1-1L WBC1-1L
3 dB bandwidth: 0.400 – 600 MHz
0.01 0.1 110 100 1000
dB
Degrees
Frequency (MHz)
-6
-3
-12
-9
-15
3
6
9
0
0
-1
-2
-3
-4
-5
1
2
3
4
515
12
0.01
Phase imbalance
Magnitude imbalance
0.1 110 100 1000 1000010000
Frequency (MHz)
WBC1-1TL WBC1-1TL
3 dB bandwidth: 0.250 – 750 MHz
5
4
3
2
1
0
Attenuation (dB)
0.01 0.1 110 100 1000
dB
Degrees
Frequency (MHz)
-6
-3
-12
-9
-15
3
6
9
0
0
-1
-2
-3
-4
-5
1
2
3
4
515
12
0.01
Phase imbalance
Magnitude imbalance
0.1 110 100 1000 1000010000
Frequency (MHz)
WBC2-1TL WBC2-1TL
3 dB bandwidth: 0.200 – 500 MHz
5
4
3
2
1
0
Attenuation (dB)
0.01 0.1 110 100 1000
dB
Degrees
Frequency (MHz)
-6
-3
-12
-9
-15
3
6
9
0
0
-1
-2
-3
-4
-5
1
2
3
4
515
12
0.01
Phase imbalance
Magnitude imbalance
0.1 110 100 1000 1000010000
Frequency (MHz)
WBC3-1TL WBC3-1TL
3 dB bandwidth: 0.300 – 900 MHz
5
4
3
2
1
0
Attenuation (dB)
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. 2017
This product may not be used in medical or high
risk applications without prior Coilcraft appr
oval.
Specification subject to change without notice.
Please check web site for latest infor
mation.
WBC Series SMT Mini Wideband Transformers
Document 424-4 Revised 07/01/15
Document 424-4
0.01 0.1 110 100 1000
dB
Degrees
Frequency (MHz)
-6
-3
-12
-9
-15
3
6
9
0
0
-1
-2
-3
-4
-5
1
2
3
4
515
12
0.01
Phase imbalance
Magnitude imbalance
0.1 110 100 1000 1000010000
Frequency (MHz)
WBC4-1TL WBC4-1TL
3 dB bandwidth: 0.250 – 750 MHz
5
4
3
2
1
0
Attenuation (dB)
Attenuation measured on a network analyzer (re: 50 Ohms)
0.01 0.1 110 100 1000
dB
Degrees
Frequency (MHz)
-6
-3
-12
-9
-15
3
6
9
0
0
-1
-2
-3
-4
-5
1
2
3
4
515
12
0.01
Phase imbalance
Magnitude imbalance
0.1 110 100 1000 1000010000
Frequency (MHz)
WBC4-14L WBC4-14L
3 dB bandwidth: 1.50 – 1200 MHz
5
4
3
2
1
0
Attenuation (dB)
0.01 0.1 110 100 1000
dB
Degrees
Frequency (MHz)
-6
-3
-12
-9
-15
3
6
9
0
0
-1
-2
-3
-4
-5
1
2
3
4
515
12
0.01
Phase imbalance
Magnitude imbalance
0.1 110 100 1000 1000010000
Frequency (MHz)
WBC4-1WL WBC4-1WL
3 dB bandwidth: 0.500 – 1000 MHz
5
4
3
2
1
0
Attenuation (dB)
0.01 0.1 110 100 1000
dB
Degrees
Frequency (MHz)
-6
-3
-12
-9
-15
3
6
9
0
0
-1
-2
-3
-4
-5
1
2
3
4
515
12
0.01
Phase imbalance
Magnitude imbalance
0.1 110 100 1000 1000010000
Frequency (MHz)
WBC4-6TL WBC4-6TL
3 dB bandwidth: 0.300 – 700 MHz
5
4
3
2
1
0
Attenuation (dB)
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. 2017
This product may not be used in medical or high
risk applications without prior Coilcraft appr
oval.
Specification subject to change without notice.
Please check web site for latest infor
mation.
WBC Series SMT Mini Wideband Transformers
Document 424-5 Revised 07/01/15
Document 424-5
0.01 0.1 110 100 1000
dB
Degrees
Frequency (MHz)
-6
-3
-12
-9
-15
3
6
9
0
0
-1
-2
-3
-4
-5
1
2
3
4
515
12
0.01
Phase imbalance
Magnitude imbalance
0.1 110 100 1000 1000010000
Frequency (MHz)
WBC8-1L WBC8-1L
3 dB bandwidth: 0.150 – 600 MHz
5
4
3
2
1
0
Attenuation (dB)
Attenuation measured on a network analyzer (re: 50 Ohms)
0.01 0.1 110 100 1000
dB
Degrees
Frequency (MHz)
-6
-3
-12
-9
-15
3
6
9
0
0
-1
-2
-3
-4
-5
1
2
3
4
515
12
0.01
Phase imbalance
Magnitude imbalance
0.1 110 100 1000 1000010000
Frequency (MHz)
WBC9-1L WBC9-1L
3 dB bandwidth: 0.300 – 500 MHz
5
4
3
2
1
0
Attenuation (dB)
0.01 0.1 110 100 1000
dB
Degrees
Frequency (MHz)
-6
-3
-12
-9
-15
3
6
9
0
0
-1
-2
-3
-4
-5
1
2
3
4
515
12
0.01
Phase imbalance
Magnitude imbalance
0.1 110 100 1000 1000010000
Frequency (MHz)
WBC16-1TL WBC16-1TL
3 dB bandwidth: 0.600 – 300 MHz
5
4
3
2
1
0
Attenuation (dB)
0.01 0.1 110 100 1000
dB
Degrees
Frequency (MHz)
-6
-3
-12
-9
-15
3
6
9
0
0
-1
-2
-3
-4
-5
1
2
3
4
515
12
0.01
Phase imbalance
Magnitude imbalance
0.1 110 100 1000 1000010000
Frequency (MHz)
WBC4-4L WBC4-4L
3 dB bandwidth: 0.250 – 800 MHz
5
4
3
2
1
0
Attenuation (dB)
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Coilcraft:
WBC4-6TLB WBC1-1LC WBC4-14LC WBC3-1TLB WBC4-1WLB WBC8-1LB WBC4-4LB WBC1-1LB WBC1-
1TLC WBC16-1TLC WBC4-1WLC WBC4-14LB WBC2-1TLB WBC8-1LC WBC4-1TLB WBC4-4LC WBC4-6TLC
WBC9-1LB WBC2-1TLC WBC3-1TLC WBC4-1TLC WBC9-1LC WBC16-1TLB WBC1-1TLB