 
SMT Wideband RF Transformers
WB Series
- (For a smaller package size
see WBC Series)
- Also available in a through hole
version
- Available in a variety of impedance ratios
- Tapped or untapped configurations
- 250 mA max current rating, 1/4 Watt RF input power rating
- 500 Vrms isolation, primary to secondary
- RoHS-compliant. 260°C compatible. Matte tin over nickel
over copper terminations
- COTS Plus tin-silver-copper and tin-lead terminations available
- Custom versions available
 Photo 
Click icon in table for pricing  Materials declaration 
PDF data sheet
SPECIFICATIONS
 Frequency Response
– No taps
Secondary tap
Primary and secondary taps
 Dimensions 
Tape and reel
specifications
 |
|---|
 |
 |
| WB1-1SL_ |
1 : 1 |
0.150 - 500 |
0.70 |
27 |
75 |
27 |
75 |
— |
 |
| WB1-6SL_ |
1 : 1 |
0.100 - 350 |
0.50 |
25 |
100 |
25 |
100 |
— |
|
| WB1.18-3SL_ |
1 : 1.18 |
0.040 - 300 |
0.50 |
90 |
300 |
108 |
330 |
— |
|
| WB1.5-6SL_ |
1 : 1.5 |
0.050 - 325 |
0.26 |
56 |
120 |
84 |
150 |
— |
|
| WB2-1-2WSL_ |
1 : 2 |
0.080 - 700 |
1.00 |
38 |
100 |
75 |
150 |
— |
|
| WB2.5-6SL_ |
1 : 2.5 |
0.080 - 225 |
0.26 |
30 |
100 |
75 |
130 |
— |
|
| WB4-6SL_ |
1 : 4 |
0.100 - 125 |
0.50 |
25 |
100 |
100 |
200 |
— |
|
| WB9-1SL_ |
1 : 9 |
0.125 - 125 |
0.57 |
25 |
100 |
225 |
250 |
— |
|
| WB16-1SL_ |
1 : 16 |
0.050 - 100 |
0.60 |
56 |
75 |
896 |
330 |
— |
|
| WB36-1SL_ |
1 : 36 |
0.100 - 45 |
0.50 |
25 |
50 |
900 |
180 |
— |
|
|
 |
| WB1-1TSL_ |
1 : 1 |
0.100 - 375 |
0.51 |
25 |
100 |
25 |
100 |
30 |
|
| WB1-6TSL_ |
1 : 1 |
0.050 - 200 |
0.20 |
70 |
150 |
70 |
150 |
18 |
|
| WB2-1TSL_ |
1 : 2 |
0.070 - 400 |
1.00 |
38 |
100 |
75 |
150 |
29 |
|
| WB2.5-6TSL_ |
1 : 2.5 |
0.050 - 125 |
0.28 |
56 |
120 |
140 |
200 |
13 |
|
| WB3-1TSL_ |
1 : 3 |
0.040 - 500 |
0.40 |
96 |
110 |
270 |
200 |
4.0 |
|
| WB4-1HSL_ |
1 : 4 |
0.100 - 500 |
0.50 |
25 |
120 |
100 |
160 |
15 |
|
| WB4-6TSL_ |
1 : 4 |
0.050 - 200 |
0.50 |
43 |
120 |
172 |
160 |
5.0 |
|
| WB5-1TSL_ |
1 : 5 |
0.050 - 400 |
0.30 |
48 |
220 |
240 |
500 |
13 |
|
| WB8-1TSL_ |
1 : 8 |
0.150 - 400 |
0.76 |
18 |
100 |
144 |
270 |
17 |
|
| WB13-1TSL_ |
1 : 13 |
0.150 - 125 |
0.72 |
17 |
90 |
221 |
200 |
10 |
|
| WB16-6TSL_ |
1 : 16 |
0.050 - 100 |
0.60 |
56 |
75 |
896 |
330 |
25 |
|
|
 |
|
| WBT1-6SL_ |
1 : 1 |
0.040 - 200 |
0.25 |
70 |
150 |
70 |
150 |
19 |
|
| WBT1.5-1SL_ |
1 : 1.5 |
0.040 - 350 |
0.30 |
60 |
150 |
90 |
180 |
19 |
|
| WBT2.5-6SL_ |
1 : 2.5 |
0.050 - 100 |
0.26 |
70 |
150 |
175 |
200 |
11 |
|
| WBT4-1SL_ |
1 : 3 |
0.040 - 150 |
0.26 |
45 |
120 |
135 |
160 |
13 |
|
| WBT4-1ASL_ |
1 : 4 |
0.040 - 350 |
0.40 |
96 |
110 |
384 |
220 |
3.5 |
|
| WBT16-1SL_ |
1 : 16 |
0.100 - 100 |
0.50 |
25 |
100 |
400 |
300 |
7.5 |
|
| WBT25-1SL_ |
1 : 25 |
0.100 - 65 |
0.50 |
25 |
100 |
625 |
350 |
6.0 |
|
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1 |
When ordering, please specify a packaging code: e.g. WB25-1LSD |
| |
Packaging: |
D = 13" machine ready reel.
EIA-481 embossed plastic tape (500 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 D instead. |
|
2 |
Impedance ratio is for the full primary winding to the full secondary winding. |
|
3 |
Inductance
measured at 100 kHz, 0.1 Vrms, 0 Adc on an Agilent/HP 4192 or equivalent. |
|
4 |
DCR measured on a micro-ohmmeter |
|
5 |
DC
imbalance is the difference in current measured at pins 1 and 3 with
the source at pin 2. Inductance drop is 15% at maximum imbalance. |
| 6 |
Ambient temperature range: |
–40°C to +85°C |
| 7 |
Storage temperature range: |
Component: –40°C to +85°C
Packaging: –55°C to +80°C |
| 8 |
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. |
| 9 |
Electrical specifications at 25°C. |
| Refer to Soldering Coilcraft Components before soldering. |
|
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Your comments and suggestions are welcome. Contact webmaster@coilcraft.com
Copyright © 2008, Coilcraft, Inc.
Updated: April 29, 2008
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