Site Settings

Warehouses
Language settings
Currency settings
Resources
Video Library
Cx Family Common Mode Chokes
0402CT Low Profile Chip Inductors
XAL7050 High-inductance Shielded Power Inductors
XGL4020 Ultra-low DCR Power Inductors

WB Wideband RF Transformers

RoHS compliant
We will continue to manufacture and support the WB series indefinitely. However, for new designs, consider the SWB, which is a drop-in replacement as an alternative to this series.
  • Surface mount and through hole versions
  • 500 V interwinding isolation, 1/4 Watt RF input power
  • 250 mA max current rating.
  • For a smaller package size, see our PWB Series
Buy Now:
Count Unit price
1 $4.09
100 $3.48
250 $2.89
500 $2.31
1000 $1.85
2500 $1.48
5000 $1.18

For high volume or non-stock items, request a quote.

. in stock, ready to ship today.
Request a Sample:

Specifications

Electrical specifications at 25°C. Measurements are referenced to 50 Ohms.

Through hole

Part number 1 L min per winding (µH) 2 DCR max (Ω) Imp. ratio
pri:sec 3
Current
rating (mA)
Bandwidth (MHz) Schematic
Pri Sec Pri Sec
WB1010-1-PCL 95 95 0.200 0.200 1 : 1 250 0.04 175 A
WB1010-PCL 780 780 0.320 0.320 1 : 1 250 0.005 100 A
WB1015-PCL 80 51 0.145 0.130 1.5 : 1 250 0.1 150 A
WB1040-PCL 95 25 0.160 0.115 4 : 1 250 0.2 300 A
WB2010-1-PCL 95 95 0.200 0.200 1 : 1 250 0.04 175 B
WB2010-PCL 780 780 0.320 0.320 1 : 1 250 0.005 100 B
WB2040-PCL 95 25 0.160 0.115 4 : 1 250 0.2 300 B
WB3010-1-PCL 95 95 0.200 0.200 1 : 1 250 0.04 175 C
WB3010-PCL 780 780 0.320 0.320 1 : 1 250 0.005 100 C
WB3015-PCL 80 51 0.145 0.130 1.5 : 1 250 0.1 150 C
WB3040-PCL 95 25 0.160 0.115 4 : 1 250 0.2 300 C

Surface mount

Part number 1 L min per winding (µH) 2 DCR max (Ω) Imp. ratio
pri:sec 3
Current
rating (mA)
Bandwidth (MHz) Schematic
Pri Sec Pri Sec
WB1010-1-SML_ 95 95 0.200 0.200 1 : 1 250 0.04 175 A
WB1010-SML_ 780 780 0.320 0.320 1 : 1 250 0.005 100 A
WB1015-SML_ 80 51 0.145 0.130 1.5 : 1 250 0.1 150 A
WB1040-SML_ 95 25 0.160 0.115 4 : 1 250 0.2 300 A
WB2010-1-SML_ 95 95 0.200 0.200 1 : 1 250 0.04 175 B
WB2010-SML_ 780 780 0.320 0.320 1 : 1 250 0.005 100 B
WB2040-SML_ 95 25 0.160 0.115 4 : 1 250 0.2 300 B
WB3010-1-SML_ 95 95 0.200 0.200 1 : 1 250 0.04 175 C
WB3010-SML_ 780 780 0.320 0.320 1 : 1 250 0.005 100 C
WB3015-SML_ 80 51 0.145 0.130 1.5 : 1 250 0.1 150 C
WB3040-SML_ 95 25 0.160 0.115 4 : 1 250 0.2 300 C
Notes
  1. When ordering surface mount parts, please specify a packaging code: e.g. WB3040-SMLD
    Through-hole parts are packaged 70 per tube and do not require a packaging code when ordering.
  2. Inductance tested at 100 kHz, 0.1 Vrms, 0 Adc
  3. Impedance ratio is for the full primary winding to the full secondary winding.

Termination:

  • RoHS-compliant. Matte tin over nickel over phos bronze. Other terminations available at additional cost.

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.
Environmental
Environmental:
RoHS compliant
Ambient temperature range:
–40°C to +85°C
Storage temperature range:
Component: –40°C to +85°C
Packaging: –40°C to +80°C
Maximum part temperature:
+85°C (ambient + temp rise)
Failures in Time (FIT) / Mean Time Between Failures (MTBF):
60 per billion hours / 16,666,667 hours, calculated per Telcordia SR-332

Performance curves

Attenuation vs Current

Frequency Response

Frequency Response

Frequency Response

Frequency Response

Schematics

WB10xx WB20xx WB30xx
wbts1.gif wbts2.gif wbts3.gif

Physical characteristics

wbtd-(1).gif

dims_inches_mm.gif

Tape and Reel specification

tapereel_pl-(1).gif

 
Parts per reel Reel dimensions (mm) Tape dimensions (mm) Orientation
13" (330 mm) A B C D E W P Po P1 H T part_or_u.gif
500 (SMT parts)* 330 100 13 30,4 24,4 24 20 4 2 6,6 0,45
* Through-hole parts are packaged 70 per tube.

General specification

Core Material:
Ferrite
Weight:
0.37 – 0.39 g
Packaging:
(SM version): 500 per 13″ reel; Plastic tape: 24 mm wide, 0.45 mm thick, 20 mm pocket spacing, 6.6 mm pocket depth; (TH version): 70 per tube

Soldering/Washing

Moisture Sensitivity Level (MSL):
1 (unlimited floor life at <30°C / 85% relative humidity)
Resistance to soldering heat:
Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles
Refer to Soldering Coilcraft Components before soldering.
PCB Washing:
Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info

Related product series