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These toroids are particulary suitable for high power or for big size chokes.
Here follows an example of power HF - VHF transformer.
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Jumper small pipes made of copper or brass which is the 12.5 Ω impedance side |
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Typical application as transformer for HF input or output | ![]() |
Mounting example |
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P.C.B. to keep togheter the ferrites |
There are also available silver plated unipolar wires with teflon insulation useful to build inductances and transformers on toroids, see dedicated section.
Order code: | PF-01 |
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Micro ferrite bead |
Conditions: | N (The product is brand new) |
Outer diameter (metric): | 2 mm |
Inner diameter (metric): | 1.2 mm |
Length (metric): | 0.5 mm |
Outer diameter (imperial): | 0.079 in |
Inner diameter (imperial): | 0.472 in |
Length (imperial): | 0.02 in |
Order code: | PF-06 |
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Ferrite bead |
Conditions: | N (The product is brand new) |
Outer diameter (metric): | 4.1 mm |
Inner diameter (metric): | 2 mm |
Length (metric): | 3 mm |
Outer diameter (imperial): | 0.161 in |
Inner diameter (imperial): | 0.079 in |
Length (imperial): | 0.118 in |
Order code: | PF-08 |
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Ferrite bead |
Conditions: | N (The product is brand new) |
Outer diameter (metric): | 4 mm |
Inner diameter (metric): | 2 mm |
Length (metric): | 6 mm |
Outer diameter (imperial): | 0.157 in |
Inner diameter (imperial): | 0.079 in |
Length (imperial): | 0.236 in |
Order code: | PF-09 |
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Ferrite bead |
Conditions: | N (The product is brand new) |
Outer diameter (metric): | 5 mm |
Inner diameter (metric): | 2.3 mm |
Length (metric): | 4 mm |
Outer diameter (imperial): | 0.197 in |
Inner diameter (imperial): | 0.091 in |
Length (imperial): | 0.157 in |
Order code: | PF-12 |
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Ferrite bead Philips TUB2.6/1/1.6-4E1 |
Conditions: | N (The product is brand new) |
Material: | 4E1 |
Permeability (µi): | 15 |
Outer diameter (metric): | 2.6 mm |
Inner diameter (metric): | 1 mm |
Length (metric): | 1.6 mm |
Outer diameter (imperial): | 0.102 in |
Inner diameter (imperial): | 0.039 in |
Length (imperial): | 0.063 in |
Order code: | PF-13 |
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Ferrite bead |
Conditions: | N (The product is brand new) |
Outer diameter (metric): | 2.5 mm |
Inner diameter (metric): | 0.9 mm |
Length (metric): | 5 mm |
Outer diameter (imperial): | 0.098 in |
Inner diameter (imperial): | 0.035 in |
Length (imperial): | 0.197 in |
Order code: | PF-16 |
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Ferrite bead Philips |
Conditions: | N (The product is brand new) |
Material: | 3S1 |
Permeability (µi): | 4000 |
Min. impedance (Ohm @ Freq.) : | 160 Ohm @ 10 MHz |
Outer diameter (metric): | 5 mm |
Inner diameter (metric): | 0.8 mm |
Length (metric): | 10 mm |
Outer diameter (imperial): | 0.197 in |
Inner diameter (imperial): | 0.031 in |
Length (imperial): | 0.394 in |
Order code: | PF-17 |
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Ferrite bead Philips TUB5/2/15-3B1 |
Conditions: | N (The product is brand new) |
Material: | 3B1 |
Permeability (µi): | 900 |
Outer diameter (metric): | 5 mm |
Inner diameter (metric): | 2.2 mm |
Length (metric): | 15 mm |
Outer diameter (imperial): | 0.197 in |
Inner diameter (imperial): | 0.087 in |
Length (imperial): | 0.591 in |
Order code: | PF-18 |
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Ferrite bead FERROXCUBE BD3/0.7/4-3S1 |
Conditions: | N- (The product is brand new but it comes from an old production) |
Material: | 3S1 |
Permeability (µi): | 4000 |
Min. impedance (Ohm @ Freq.) : | 48 Ohm @ 3 MHz |
Outer diameter (metric): | 3 mm |
Inner diameter (metric): | 0.7 mm |
Length (metric): | 4 mm |
Outer diameter (imperial): | 0.118 in |
Inner diameter (imperial): | 0.028 in |
Length (imperial): | 0.157 in |
Order code: | PF-19 |
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Ferrite bead TDK L6 T3.5X1X1.5 |
Conditions: | N (The product is brand new) |
Material: | HF70 |
Permeability (µi): | 1500 |
Outer diameter (metric): | 3.5 mm |
Inner diameter (metric): | 1.5 mm |
Length (metric): | 1 mm |
Outer diameter (imperial): | 0.138 in |
Inner diameter (imperial): | 0.059 in |
Length (imperial): | 0.039 in |
Order code: | PF-20 |
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Ferrite bead |
Conditions: | N (The product is brand new) |
Outer diameter (metric): | 5.9 mm |
Inner diameter (metric): | 3 mm |
Length (metric): | 1.6 mm |
Outer diameter (imperial): | 0.232 in |
Inner diameter (imperial): | 0.118 in |
Length (imperial): | 0.063 in |
Order code: | PF-21 |
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Ferrite bead |
Conditions: | N (The product is brand new) |
Outer diameter (metric): | 6.5 mm |
Inner diameter (metric): | 3.8 mm |
Length (metric): | 2.6 mm |
Outer diameter (imperial): | 0.256 in |
Inner diameter (imperial): | 0.15 in |
Length (imperial): | 0.102 in |
Order code: | PF-22 |
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Ferrite bead |
Conditions: | N (The product is brand new) |
Outer diameter (metric): | 6.6 mm |
Inner diameter (metric): | 3.4 mm |
Length (metric): | 2.9 mm |
Outer diameter (imperial): | 0.26 in |
Inner diameter (imperial): | 0.134 in |
Length (imperial): | 0.114 in |
Order code: | PF-23 |
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Ferrite bead KE KITAGAWA K5A RH 9.5X5.2X9.5 |
Conditions: | N (The product is brand new) |
Permeability (µi): | 700 |
Min. impedance (Ohm @ Freq.) : | 30 Ohm @ 25 MHz, 80 Ohm @ 100 MHz |
Outer diameter (metric): | 9.5 mm |
Inner diameter (metric): | 5.2 mm |
Length (metric): | 9.5 mm |
Outer diameter (imperial): | 0.374 in |
Inner diameter (imperial): | 0.205 in |
Length (imperial): | 0.374 in |
Order code: | PF-24 |
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Ferrite bead KE KITAGAWA K5A RH 9.5X4.7X12.7 |
Conditions: | N (The product is brand new) |
Permeability (µi): | 700 |
Min. impedance (Ohm @ Freq.) : | 55 Ohm @ 25 MHz, 100 Ohm @ 100 MHz |
Outer diameter (metric): | 9.5 mm |
Inner diameter (metric): | 4.7 mm |
Length (metric): | 12.7 mm |
Outer diameter (imperial): | 0.374 in |
Inner diameter (imperial): | 0.185 in |
Length (imperial): | 0.5 in |