EMI SUPPRESSION - TOROID CORES #43 MATERIAL

Listed in ascending order of "A" dimension

toroid diag

The "H" column gives for each bead size the calculated dc bias field in oersted for 1 turn and 1 ampere direct current.

The actual dc H field in the application is this value of "H" times the actual NI (ampere - turn) product.

Dimensions in bold type are in millimeters, italic numbers are nominal in inches.

Part Number Typical Impedance (ohms) H (Oe) Wt
(g)
Dimensions
25 MHz 100 MHz 250 MHz A B C
FT-50-43 21 42   .43 1.7 12.7
.500
7.15
.282
4.9
.188
FT-50A-43 21 41   .40 2.1 12.7
.500
7.9
.312
6.35
.250
FT-50B-43 35 73   .40 4.3 12.7
.500
7.9
.312
12.7
.500
FT-82-43 19 44   .24 5.8 21.0
.825
13.2
.520
6.35
.250
FT-114-43 22 47   .17 12 29.0
1.142
19.0
.900
7.5
.295
FT-140-43 38 80   .14 32 35.6
1.400
22.9
.900
12.7
.500
FT-240-43 46 108   .09 105 61.0
2.400
35.6
1.400
12.7
.500

23/04/07
homepage