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© Coilcraft, Inc. 2009
Wideband Transformers
Specifications subject to change without notice.
Please check our website for latest information.
Document 425-2
Revised 10/30/08
Document 425-2
6
4
3
1
6
5
4
3
2
1
6
4
3
2
1
Impedance
Insertion
Pins 4 – 6
Pins 1 – 3
DC
Part number
ratio2
Bandwidth
loss max
L min3 DCR max4
L min3 DCR max4
imbalance5
Schematic
SM1
TH
pri : sec
(MHz)
(dB)
(µH)
(mOhm)
(µH)
(mOhm)
max (mA)
WB1-1SL_
WB1-1L
1 : 1
0.150 – 500
0.70
27
75
27
75
—
WB1-6SL_
WB1-6L
1 : 1
0.100 – 350
0.50
25
100
25
100
—
WB1.18-3SL_
WB1.18-3L
1 : 1.18
0.040 – 300
0.50
90
300
108
330
—
WB1.5-6SL_
WB1.5-6L
1 : 1.5
0.050 – 325
0.26
56
120
84
150
—
WB2-1-2WSL_
WB2-1-2WL
1 : 2
0.080 – 700
1.00
38
100
75
150
—
WB2.5-6SL_
WB2.5-6L
1 : 2.5
0.080 – 225
0.26
30
100
75
130
—
WB4-6SL_
WB4-6L
1 : 4
0.100 – 125
0.50
25
100
100
200
—
WB9-1SL_
WB9-1L
1 : 9
0.125 – 125
0.57
25
100
225
250
—
WB16-1SL_
WB16-1L
1 : 16
0.050 – 100
0.60
56
75
896
330
—
WB36-1SL_
WB36-1L
1 : 36
0.100 – 45
0.50
25
50
900
180
—
WB1-1TSL_
WB1-1TL
1 : 1
0.100 – 375
0.51
25
100
25
100
30
WB1-6TSL_
WB1-6TL
1 : 1
0.050 – 200
0.20
70
150
70
150
18
WB2-1TSL_
WB2-1TL
1 : 2
0.070 – 400
1.00
38
100
75
150
29
WB2.5-6TSL_
WB2.5-6TL
1 : 2.5
0.050 – 125
0.28
56
120
140
200
13
WB3-1TSL_
WB3-1TL
1 : 3
0.040 – 500
0.40
96
110
270
200
4.0
WB4-1HSL_
WB4-1HL
1 : 4
0.100 – 500
0.50
25
120
100
160
15
WB4-6TSL_
WB4-6TL
1 : 4
0.050 – 200
0.50
43
120
172
160
5.0
WB5-1TSL_
WB5-1TL
1 : 5
0.050 – 400
0.30
48
220
240
500
13
WB8-1TSL_
WB8-1TL
1 : 8
0.150 – 400
0.76
18
100
144
270
17
WB13-1TSL_
WB13-1TL
1 : 13
0.150 – 125
0.72
17
90
221
200
10
WB16-6TSL_
WB16-6TL
1 : 16
0.050 – 100
0.60
56
75
896
330
25
WBT1-6SL_
WBT1-6L
1 : 1
0.040 – 200
0.25
70
150
70
150
19
WBT1.5-1SL_
WBT1.5-1L
1 : 1.5
0.040 – 350
0.30
60
150
90
180
19
WBT2.5-6SL_
WBT2.5-6L
1 : 2.5
0.050 – 100
0.26
70
150
175
200
11
WBT4-1SL_
WBT4-1L
1 : 3
0.040 – 150
0.26
45
120
135
160
13
WBT4-1ASL_
WBT4-1AL
1 : 4
0.040 – 350
0.40
96
110
384
220
3.5
WBT16-1SL_
WBT16-1L
1 : 16
0.100 – 100
0.50
25
100
400
300
7.5
WBT25-1SL_
WBT25-1L
1 : 25
0.100 – 65
0.50
25
100
625
350
6.0
1. When ordering, please specify packaging code:
WB25-1SL
D
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 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 max imbalance.
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
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