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WB Series
Wideband RF Transformers

We will continue to manufacture and support the WB indefinitely, however for new designs, consider the SWB, which is a drop-in replacement as an alternative to this series.
  • (For a smaller package size and more values, see PWB Series)
  • Available in 1:1, 1.5:1 and 4:1 versions
  • Tapped or untapped configurations
  • Through hole or gull wing surface mount design
  • 250 mA max current rating; 1/4 Watt RF input power
  • 500 Vrms isolation (hipot), primary to secondary
  • RoHS-compliant. 260°C compatible. Matte tin over nickel over phos bronze terminations
  • Custom versions available

SPECIFICATIONS


Schematic Part number
(through hole)
Part number1
(surface mount)
Imp. ratio2
pri : sec
Frequency
(MHz)
Pri (pins 1-3) Sec (pins 6-4)
L min3
(µH)
DCR max4
(Ohms)
L min3
(µH)
DCR max4
(Ohms)
WB1010-PCL WB1010-SML_ 1 : 1 0.005 - 100 780 0.320 780 0.320
WB1010-1-PCL WB1010-1-SML_ 1 : 1 0.04 - 175 95 0.200 95 0.200
WB1015-PCL WB1015-SML_ 1.5 : 1 0.1 - 150 80 0.145 51 0.130
WB1040-PCL WB1040-SML_ 4 : 1 0.2 - 300 95 0.160 25 0.115

WB2010-PCL WB2010-SML_ 1 : 1 0.005 - 100 780 0.320 780 0.320
WB2010-1-PCL WB2010-1-SML_ 1 : 1 0.04 - 175 95 0.200 95 0.200
WB2040-PCL WB2040-SML_ 4 : 1 0.2 - 300 95 0.160 25 0.115

wbts3.gif (877 bytes)
WB3010-PCL WB3010-SML_ 1 : 1 0.005 - 100 780 0.320 780 0.320
WB3010-1-PCL WB3010-1-SML_ 1 : 1 0.04 - 175 95 0.200 95 0.200
WB3015-PCL WB3015-SML_ 1.5 : 1 0.1 - 150 80 0.145 51 0.130
WB3040-PCL WB3040-SML_ 4 : 1 0.2 - 300 95 0.160 25 0.115
1 When ordering surface-mount parts, please specify a packaging code: e.g. WB3010-1-SMLD
Through-hole parts are packaged 70 per tube and do not require a packaging code when ordering.
  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 tested at 100 kHz, 0.1 Vrms, 0 Adc
4 DCR at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
5 Ambient temperature range: −40°C to +85°C
6 Storage temperature range: Component: −40°C to +85°C
Tape and reel packaging: −40°C to +80°C
7 Resistance to soldering heat (surface mount version): Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between.
8 Electrical specifications at 25°C. Measurements are referenced to 50 Ohms.
Refer to Soldering Coilcraft Components before soldering.
PCB washing: Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.

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Updated: November 27, 2017