Ferrite Toroid Core AL Values

NOTE: These AL values are unsuitable for RF calculations. They are measured at about 10 kHz and low flux density. See Programs on homepage for suitable RF calculation programs.

Insert material type ( ) to get complete core number.
Core Number vs AL Value (nH/t2)       Note: AL Value +/-  20-30%
Core Number Material ( )
43 61 63 67 68 72 75 77 F J W H
FT-23-( ) 165 25 * 7.8 4.0 * 990 356 * * * *
FT-37-( ) 375 55.3 * 19.7 8.8 * 2110 884 * * * *
FT-50-( ) 470 68.0 * 22.0 11.0 1100 * 990 * 2750 5430 8140
FT-50A-( ) 510 75.0 * 24.0 12.0 * * 1080 * 2990 * *
FT-50B-( ) 1025 150.0 * 48.0 24.0 * * 2160 * * * *
FT-82-( ) 500 75 * 22.4 11.7 * * 1060 * * * *
FT-87-( ) * * * * * * * * * 3020 6040 9060
FT-87A-( ) * * * * * * * * 3624 6040 12080 18100
FT-114-( ) 540 79.3 * 25.4 12.7 * * 1270 1902 3170 * *
FT-114A-( ) * 146.0 * * * * * 2340 * * * *
FT-140-( ) 952 140.0 * 45.0 * * * 2250 * * * *
FT-140A-( ) * * * * * * * * * 6736 * *
FT-150-( ) * * * * * * * * 2640 4400 * *
FT-150A-( ) * * * * * * * * 5020 8365 * *
FT-193-( ) * * * * * * * * 3640 6065 * *
FT-193A-( ) * * * * * * * * 4460 7435 * *
FT-240-( ) 1160 173.0 53.0 53.0 * * * 2725 * 6845 * *
* core size not available in this material

04/12/10
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