
The Amidon Associates produces a broad line of ferrite beads, coil forms, cores and specialty items for the electronic experimenter.
These products have wide use in RFI suppressions, antenna design and matching. (Dimensions are in inches). Click here for material chart.
A Ferrite bead is a dowel-like device which has a center hole and is composed of ferromagnetic material. When placed on to a current carrying conductor it will act as an RF choke. It offers convenient, inexpensive, yet effective means
of RF shielding, parasitic suppression and RF decoupling.
Order # |
Model |
Description |
Pkg. |
O.D. |
I.D. |
Height |
RFI Attenuation |
List |
Price |
Order |
|
FB 43- 101 |
Ferrite Beads |
12 |
.138 |
.051 |
.128 |
40-200 MHz |
|
Not in stock |
#4610 |
FB 43- 201 |
Ferrite Beads |
12 |
.076 |
.043 |
.150 |
30-400 MHz |
$7.20 |
$2.98 |
 |
#1528 |
FB 43- 801 |
Ferrite Beads |
12 |
.296 |
.094 |
.297 |
40-200 MHz |
$8.40 |
$2.98 |
 |
|
FB 43- 2401 |
Ferrite Beads |
12 |
.380 |
.197 |
.190 |
40-200 MHz |
|
Not in stock |
#4491 |
FB 43- 6301 |
Ferrite Beads |
12 |
.375 |
.194 |
.410 |
40-200 MHz |
$7.80 |
$2.98 |
 |
|
FB 61- 101 |
Ferrite Beads |
12 |
.138 |
.051 |
.128 |
above 200 MHz |
|
Not in stock |
#1532 |
FB 73- 101 |
Ferrite Beads |
12 |
.138 |
.051 |
.128 |
10-50 MHz |
$6.00 |
$2.98 |
 |
|
FB 73- 801 |
Ferrite Beads |
12 |
.296 |
.094 |
.297 |
10-50 MHz |
|
Not in stock |
|
FB 73- 1801 |
Ferrite Beads |
12 |
.200 |
.062 |
.437 |
10-50 MHz |
|
Not in stock |
|
FB 73- 2401 |
Ferrite Beads |
12 |
.380 |
.197 |
.190 |
10-50 MHz |
|
Not in stock |
|
FB 75B- 101 |
Ferrite Beads |
12 |
.138 |
.051 |
.128 |
2-30 MHz |
|
Not in stock |
#2838 |
FB 77- 6301 |
Ferrite Beads |
12 |
.375 |
.194 |
.410 |
2-30 MHz |
$8.40 |
$4.20 |
 |
Ferrite toroidal cores. AL values = mH/1000 turns. First numerals in model indicate O.D., second indicate material.
Order # |
Model |
Description |
Pkg. |
O.D. |
I.D. |
Height |
AL |
List |
Price |
Order |
#1536 |
FT 23-61 |
Ferrite Toroidal Core |
4 |
.230 |
.120 |
.060 |
24.8 |
$ 7.00 |
$ 2.98 |
 |
#1537 |
FT 23-77 |
Ferrite Toroidal Core |
4 |
.230 |
.120 |
.060 |
356 |
$ 3.00 |
$ 1.50 |
 |
#1538 |
FT 37-43 |
Ferrite Toroidal Core |
4 |
.375 |
.187 |
.125 |
420 |
$ 3.60 |
$ 1.80 |
 |
#0602 |
FT 37-61 |
Ferrite Toroidal Core |
4 |
.375 |
.187 |
.125 |
55.3 |
|
Not in stock |
#4348 |
FT 37-67 |
Ferrite Toroidal Core |
4 |
.375 |
.187 |
.125 |
17.7 |
$ 3.60 |
$ 1.80 |
 |
|
FT 50-43 |
Ferrite Toroidal Core |
3 |
.500 |
.281 |
.188 |
523 |
|
Not in stock |
|
FT 50-61 |
Ferrite Toroidal Core |
3 |
.500 |
.281 |
.188 |
68 |
|
Not in stock |
|
FT 50-J |
Ferrite Toroidal Core |
3 |
.500 |
.281 |
.188 |
2710 |
|
Not in stock |
#1544 |
FT 82-43 |
Ferrite Toroidal Core |
3 |
.825 |
.520 |
.250 |
557 |
$ 5.90 |
$ 2.98 |
 |
#3579 |
FT 82-61 |
Ferrite Toroidal Core |
3 |
.825 |
.520 |
.250 |
73.3 |
$ 6.00 |
$ 2.98 |
 |
|
FT 82-77 |
Ferrite Toroidal Core |
3 |
.825 |
.520 |
.250 |
1060 |
|
Not in stock |
|
FT114-43 |
Ferrite Toroidal Core |
1 |
1.142 |
.750 |
.295 |
603 |
|
Not in stock |
|
FT114-61 |
Ferrite Toroidal Core |
1 |
1.142 |
.750 |
.295 |
79.3 |
|
Not in stock |
#2953 |
FT193A-F |
Ferrite Toroidal Core |
1 |
1.932 |
1.250 |
.750 |
4460 |
$12.00 |
$ 4.98 |
 |
|
FT193-J |
Ferrite Toroidal Core |
1 |
1.932 |
1.252 |
.625 |
6065 |
|
Not in stock |
|
FT240-61 |
Ferrite Toroidal Core |
1 |
2.400 |
1.400 |
.500 |
173 |
|
Not in stock |
|
FT240-77 |
Ferrite Toroidal Core |
1 |
2.400 |
1.400 |
.500 |
3130 |
|
Not in stock |
|
FT240-K |
Ferrite Toroidal Core |
1 |
2.400 |
1.400 |
.500 |
|
|
Not in stock |
Iron powder toroidal cores. AL values = µH/100 turns.
Order # |
Model |
Description |
Pkg. |
O.D. |
I.D. |
Height |
AL |
List |
Price |
Order |
#1552 |
T 25- 2 |
Iron Powder Toroidal Core |
5 |
.250 |
.120 |
.096 |
34 |
$ 4.95 |
$ 2.48 |
 |
#1554 |
T 30- 6 |
Iron Powder Toroidal Core |
5 |
.370 |
.151 |
.128 |
36 |
$ 4.95 |
$ 2.48 |
 |
#0647 |
T 37- 2 |
Iron Powder Toroidal Core |
5 |
.375 |
.205 |
.128 |
40 |
$ 4.50 |
$ 1.98 |
 |
|
T 37- 6 |
Iron Powder Toroidal Core |
5 |
.375 |
.205 |
.128 |
30 |
|
Not in stock |
#1562 |
T 37-10 |
Iron Powder Toroidal Core |
5 |
.375 |
.205 |
.128 |
25 |
$ 4.50 |
$ 1.98 |
 |
#4869 |
T 44-10 |
Iron Powder Toroidal Core |
4 |
.440 |
.229 |
.159 |
33 |
$ 4.60 |
$ 1.98 |
 |
|
T 50- 2 |
Iron Powder Toroidal Core |
4 |
.500 |
.300 |
.190 |
49 |
|
Discontinued |
#1565 |
T 50- 6 |
Iron Powder Toroidal Core |
4 |
.500 |
.300 |
.190 |
40 |
$ 5.00 |
$ 1.98 |
 |
#4821 |
T 50-10 |
Iron Powder Toroidal Core |
4 |
.500 |
.303 |
.190 |
31 |
$ 5.00 |
$ 1.98 |
 |
#1566 |
T 68- 2 |
Iron Powder Toroidal Core |
4 |
.690 |
.370 |
.190 |
57 |
$ 5.00 |
$ 1.98 |
 |
|
T 68- 6 |
Iron Powder Toroidal Core |
4 |
.690 |
.370 |
.190 |
47 |
$ |
Not in stock |
#1556 |
T 80- 2 |
Iron Powder Toroidal Core |
3 |
.795 |
.495 |
.250 |
55 |
$ 5.00 |
$ 1.98 |
 |
#4868 |
T 80- 6 |
Iron Powder Toroidal Core |
3 |
.795 |
.495 |
.250 |
|
$ 7.20 |
$ 2.98 |
 |
#4779 |
T 94- 2 |
Iron Powder Toroidal Core |
2 |
.942 |
.560 |
.312 |
|
$ 3.50 |
$ 1.48 |
 |
#1567 |
T 94-26 |
Iron Powder Toroidal Core |
2 |
.942 |
.560 |
.312 |
590 |
$ 3.00 |
$ 1.48 |
 |
#6847 |
T106- 1 |
Iron Powder Toroidal Core |
2 |
1.060 |
.570 |
.437 |
|
$ 8.20 |
$ 3.98 |
 |
|
T106- 2 |
Iron Powder Toroidal Core |
2 |
1.060 |
.570 |
.437 |
325 |
|
Not in stock |
#6848 |
T106- 3 |
Iron Powder Toroidal Core |
2 |
1.060 |
.570 |
.437 |
|
$ 7.90 |
$ 2.98 |
 |
#4609 |
T106- 6 |
Iron Powder Toroidal Core |
2 |
1.060 |
.570 |
.437 |
116 |
$ 9.90 |
$ 3.98 |
 |
#6849 |
T106-15 |
Iron Powder Toroidal Core |
2 |
1.060 |
.570 |
.437 |
|
$ 9.00 |
$ 3.98 |
 |
#0781 |
T184- 2 |
Iron Powder Toroidal Core |
1 |
1.840 |
.950 |
.710 |
240 |
$ 8.00 |
$ 3.98 |
 |
|
T200- 2 |
Iron Powder Toroidal Core |
1 |
2.000 |
1.250 |
.550 |
120 |
|
Not in stock |
Multi-aperture cores. AL values = mh/1000 turns.
Order # |
Model |
Description |
Pkg. |
O.D. |
I.D. |
Hght |
Th |
AL |
List |
Price |
Order |
|
BN-43-202 |
Two Hole Core |
4 |
.525 |
.150 |
.550 |
.295 |
2890 |
|
Not in stock |
#1871 |
BN-43-302 |
Two Hole Core |
4 |
.525 |
.150 |
.407 |
.295 |
2200 |
$6.00 |
$2.98 |
 |
|
BN-73-702 |
Two Hole Core |
4 |
.525 |
.150 |
.550 |
.295 |
8500 |
|
Not in stock |
Split cores.
Order # |
Model |
Description |
Pkg. |
O.D. |
I.D. |
Hght |
D |
Max cbl D. |
List |
Price |
Order |
#1087 |
2x31-3551p2 |
Split cores for round cable |
1 |
1.15 |
.740 |
1.650 |
.579 |
0.750 |
$ 9.99 |
$ 4.98 |
 |
|
2x43- 251p2 |
Split cores for round cable |
1 |
.705 |
.275 |
1.272 |
.362 |
0.250 |
|
Not in stock |
#1138 |
2x43- 151p2 |
Split cores for round cable |
1 |
1.142 |
.528 |
1.280 |
.583 |
0.500 |
$12.95 |
$ 5.98 |
 |
Ferrite rods. AL values = mH/1000 turns.
Order # |
Model |
Description |
Material |
Diameter |
Length |
AL |
Perm. |
List |
Price |
Order |
|
R33-050750 |
Ferrite Rod |
33 |
.50 |
7.5 |
70 |
800 |
|
Not in stock |
|
R61-050400 |
Ferrite Rod |
61 |
.50 |
4.0 |
43 |
125 |
|
Not in stock |
|
R61-050750 |
Ferrite Rod |
61 |
.50 |
7.5 |
49 |
125 |
|
Not in stock |
Balun Kits.
Order # |
Model |
Description |
Core |
Wire |
Ratios |
Price |
Order |
|
AB-240-125 |
Balun Kit |
FT-240-61 |
14 gauge 10 feet |
4:1 or 1:1 |
Not in stock |
Click here for information on the Amidon Technical Reference.
|