Wurth WE-742700790 ferrite bead

13,18 EUR (excl. VAT)

11 in stock

Wurth WE-742700790 ferrite bead

 

ManufacturerWurth Elektronik
roWaves SKUFT-21
Manufacturer codeWE-742700790
Color codeblack
Material number7W380
Initial permeability (µi)380
Impedance@25MHz, 1turn: 155Ω
@25MHz, 2 turns: 644Ω
Usable frequency domain1...20MHz (wideband CMC choke)
Max. RF power500W CMC choke
Curie temperature185°C typ.
Outer diameter (OD)26mm
Internal diameter (ID)13mm
Length(Ht)28.5mm
View DatasheetAdobe

13,18 EUR (excl. VAT)

11 in stock

Usable frequency ranges, depending on the application:

  1. broadband transformers: 1 – 30 MHz
  2. RFI / EMI / CMC suppression: 1 – 20 MHz

An impedance > 1000Ω (for the operating frequency) is sufficient for most applications. The coils should be made with very good quality RG-316 coaxial cable.  Any high quality RG-316 coaxial cable can allow 500W-1kW power in 160 /80/40m bands. For higher bands> 10MHz, it is recommended to use the additional Teflon insulated coaxial cable to keep the losses low.

WE 742700790 CMC applications rowaves juma radio

According to the table below, for Wurth Elektronik 742700790 (our case), between 5 – 8 turns would be enough to obtain an impedance of at least 1000-2500Ω, from 1.8 – 14MHz .

turns no WE 742700790 applications CMC rowaves

742700790 WE impedance

Weight 54 g
Dimensions 2,6 × 1,3 × 2,9 cm

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