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Toroids Specs



T 25 – 2  Physical Dimensions



OD = .255 in / 6.48 mm +/- 0.015 in
ID = .120 in / 3.05 mm +/- 0.015 in
Ht = .096 in / 2.44 mm +/- 0.02 in
 AL=3.4 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 95
Color Code = Red / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
250 KHz - 10 MHz


T 25 – 6  Physical Dimensions



OD = .255 in / 6.48 mm +/- 0.015 in
ID = .120 in / 3.05 mm +/- 0.015 in
Ht = .096 in / 2.44 mm +/- 0.02 in
 AL=2.7 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 35
Color Code = Yellow / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
3 MHz - 40 MHz

T 30 – 2  Physical Dimensions



OD = .307 in / 7.80 mm +/- 0.015 in
ID = .151 in / 3.84 mm +/- 0.015 in
Ht = .128 in / 3.25 mm +/- 0.02 in
 AL=4.3 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 95
Color Code = Red / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
250 KHz - 10 MHz

T 30 – 6  Physical Dimensions



OD = .307 in / 7.80 mm +/- 0.015 in
ID = .151 in / 3.84 mm +/- 0.015 in
Ht = .128 in / 3.25 mm +/- 0.02 in
 AL=3.6 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 35
Color Code = Yellow / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
3 MHz - 40 MHz

T 37 – 0  Physical Dimensions



OD = .375 in / 9.53 mm +/- 0.015 in
ID = .205 in/ 5.21 mm +/- 0.015 in
Ht = .128 in / 3.25 mm +/- 0.02 in
 AL=0.49 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 0
Color Code = Tan / Tan
Optimum Resonant Circuit Range
for highest Q and lowest core loss
50 MHz - 350 MHz

T 37 – 2  Physical Dimensions



OD = .375 in / 9.53 mm +/- 0.015 in
ID = .205 in/ 5.21 mm +/- 0.015 in
Ht = .128 in / 3.25 mm +/- 0.02 in
 AL=4 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 95
Color Code = Red / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
250 KHz - 10 MHz

T 37 – 6  Physical Dimensions



OD = .375 in / 9.53 mm +/- 0.015 in
ID = .205 in/ 5.21 mm +/- 0.015 in
Ht = .128 in / 3.25 mm +/- 0.02 in
 AL=3 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 35
Color Code = Yellow / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
3 MHz - 40 MHz

T 37 – 7  Physical Dimensions



OD = .375 in / 9.53 mm +/- 0.015 in
ID = .205 in/ 5.21 mm +/- 0.015 in
Ht = .128 in / 3.25 mm +/- 0.02 in
 AL=3.2 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 30
Color Code = White / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
1 MHz - 25 MHz

T 44 – 2  Physical Dimensions



OD = .440 in / 11.2 mm +/- 0.02 in
ID = .229 in / 5.82 mm +/- 0.02 in
Ht = .159 in / 4.04 mm +/- 0.02 in
 AL=5.2 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 95
Color Code = Red / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
250 KHz - 10 MHz

T 44 – 6  Physical Dimensions



OD = .440 in / 11.2 mm +/- 0.02 in
ID = .229 in / 5.82 mm +/- 0.02 in
Ht = .159 in / 4.04 mm +/- 0.02 in
 AL=4.2 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 35
Color Code = Yellow / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
3 MHz - 40 MHz

T 50 – 1  Physical Dimensions



OD = .500 in / 12.7 mm +/- 0.02 in
ID = .303 in / 7.70 mm +/- 0.02 in
Ht = .190 in / 4.83 mm +/- 0.02 in
 AL=10 +/- 10 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 280
Color Code = Blue / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
150 KHz - 3 MHz

T 50 – 2  Physical Dimensions



OD = .500 in / 12.7 mm +/- 0.02 in
ID = .303 in / 7.70 mm +/- 0.02 in
Ht = .190 in / 4.83 mm +/- 0.02 in
 AL=4.9 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 95
Color Code = Red / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
250 KHz - 10 MHz

T 50 – 3  Physical Dimensions



OD = .500 in / 12.7 mm +/- 0.02 in
ID = .303 in / 7.70 mm +/- 0.02 in
Ht = .190 in / 4.83 mm +/- 0.02 in
 AL=17.5 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 370
Color Code = Grey / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
20 KHz - 1 MHz

T 50 – 6  Physical Dimensions



OD = .500 in / 12.7 mm +/- 0.02 in
ID = .303 in / 7.70 mm +/- 0.02 in
Ht = .190 in / 4.83 mm +/- 0.02 in
 AL=4 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 35
Color Code = Yellow / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
3 MHz - 40 MHz

T 50 – 7  Physical Dimensions



OD = .500 in / 12.7 mm +/- 0.02 in
ID = .303 in / 7.70 mm +/- 0.02 in
Ht = .190 in / 4.83 mm +/- 0.02 in
 AL=4.3 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 30
Color Code = White / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
1 MHz - 25 MHz

T 50 – 10  Physical Dimensions



OD = .500 in / 12.7 mm +/- 0.02 in
ID = .303 in / 7.70 mm +/- 0.02 in
Ht = .190 in / 4.83 mm +/- 0.02 in
 AL=3.1 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 150
Color Code = Black / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
15 MHz - 100 MHz

T 68 – 1  Physical Dimensions



OD = .690 in / 17.5 mm +/- 0.02 in
ID = .370 in / 9.40 mm +/- 0.02 in
Ht = .190 in / 4.83 mm +/- 0.02 in
 AL=11.5 +/- 10 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 280
Color Code = Blue / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
150 KHz - 3 MHz

T 68 – 2  Physical Dimensions



OD = .690 in / 17.5 mm +/- 0.02 in
ID = .370 in / 9.40 mm +/- 0.02 in
Ht = .190 in / 4.83 mm +/- 0.02 in
 AL=5.7 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 95
Color Code = Red / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
250 KHz - 10 MHz

T 68 – 6  Physical Dimensions



OD = .690 in / 17.5 mm +/- 0.02 in
ID = .370 in / 9.40 mm +/- 0.02 in
Ht = .190 in / 4.83 mm +/- 0.02 in
 AL=4.7 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 35
Color Code = Yellow / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
3 MHz - 40 MHz

T 68 – 7  Physical Dimensions



OD = .690 in / 17.5 mm +/- 0.02 in
ID = .370 in / 9.40 mm +/- 0.02 in
Ht = .190 in / 4.83 mm +/- 0.02 in
 AL=5.2 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 30
Color Code = White / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
1 MHz - 25 MHz

T 68 – 10  Physical Dimensions



OD = .690 in / 17.5 mm +/- 0.02 in
ID = .370 in / 9.40 mm +/- 0.02 in
Ht = .190 in / 4.83 mm +/- 0.02 in
 AL=3.2 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 150
Color Code = Black / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
15 MHz - 100 MHz

T 80 – 2  Physical Dimensions



OD = .795 in / 20.2 mm +/- 0.02 in
ID = .495 in / 12.6 mm +/- 0.02 in
Ht = .250 in / 6.35 mm +/- 0.025 in
 AL=5.5 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 95
Color Code = Red / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
250 KHz - 10 MHz

T 80 – 6  Physical Dimensions



OD = .795 in / 20.2 mm +/- 0.02 in
ID = .495 in / 12.6 mm +/- 0.02 in
Ht = .250 in / 6.35 mm +/- 0.025 in
 AL=4.5 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 35
Color Code = Yellow / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
3 MHz - 40 MHz

T 80 - 10  Physical Dimensions



OD = .795 in / 20.2 mm +/- 0.02 in
ID = .495 in / 12.6 mm +/- 0.02 in
Ht = .250 in / 6.35 mm +/- 0.025 in
 AL=3.2 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 150
Color Code = Black / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
15 MHz - 100 MHz

T 94 – 2  Physical Dimensions



OD = .942 in / 23.9 mm +/- 0.02 in
ID = .560 in / 14.2 mm +/- 0.02 in
Ht = .312 in / 7.92 mm +/- 0.025 in
 AL=8.4 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 95
Color Code = Red / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
250 KHz - 10 MHz

T 94 – 6  Physical Dimensions



OD = .942 in / 23.9 mm +/- 0.02 in
ID = .560 in / 14.2 mm +/- 0.02 in
Ht = .312 in / 7.92 mm +/- 0.025 in
 AL=7 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 35
Color Code = Yellow / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
3 MHz - 40 MHz

T 94 – 10  Physical Dimensions



OD = .942 in / 23.9 mm +/- 0.02 in
ID = .560 in / 14.2 mm +/- 0.02 in
Ht = .312 in / 7.92 mm +/- 0.025 in
 AL=5.8 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 150
Color Code = Black / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
15 MHz - 100 MHz

T 106 – 0  Physical Dimensions



OD = 1.06 in / 26.9 mm +/- 0.02 in
ID = .570 in / 14.5 mm +/- 0.02 in
Ht = .437 in / 11.1 mm +/- 0.025 in
 AL=1.9 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 0
Color Code = Tan / Tan
Optimum Resonant Circuit Range
for highest Q and lowest core loss
50 MHz - 350 MHz

T 106 – 2  Physical Dimensions



OD = 1.06 in / 26.9 mm +/- 0.02 in
ID = .570 in / 14.5 mm +/- 0.02 in
Ht = .437 in / 11.1 mm +/- 0.025 in
 AL=13.5 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 95
Color Code = Red / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
250 KHz - 10 MHz

T 106 – 6  Physical Dimensions



OD = 1.06 in / 26.9 mm +/- 0.02 in
ID = .570 in / 14.5 mm +/- 0.02 in
Ht = .437 in / 11.1 mm +/- 0.025 in
 AL=11.6 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 35
Color Code = Yellow / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
3 MHz - 40 MHz

T 130 – 0  Physical Dimensions



OD = 1.30 / 33.0 mm +/- 0.02 in
ID = .780 in / 19.8 mm +/- 0.02 in
Ht = .437 in / 11.1 mm +/- 0.025 in
 AL=1.5 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 0
Color Code = Tan / Tan
Optimum Resonant Circuit Range
for highest Q and lowest core loss
50 MHz - 350 MHz

T 130 – 2  Physical Dimensions



OD = 1.30 / 33.0 mm +/- 0.02 in
ID = .780 in / 19.8 mm +/- 0.02 in
Ht = .437 in / 11.1 mm +/- 0.025 in
 AL=11 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 95
Color Code = Red / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
250 KHz - 10 MHz

T 130 – 6  Physical Dimensions



OD = 1.30 / 33.0 mm +/- 0.02 in
ID = .780 in / 19.8 mm +/- 0.02 in
Ht = .437 in / 11.1 mm +/- 0.025 in
 AL=9.6 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 35
Color Code = Yellow / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
3 MHz - 40 MHz

T 130 – 17  Physical Dimensions



OD = 1.30 / 33.0 mm +/- 0.02 in
ID = .780 in / 19.8 mm +/- 0.02 in
Ht = .437 in / 11.1 mm +/- 0.025 in
 AL=4 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 50
Color Code = Blue / Yellow
Optimum Resonant Circuit Range
for highest Q and lowest core loss
20 MHz - 200 MHz

T 157 – 2  Physical Dimensions



OD = 1.57 / 39.9 mm +/- 0.02 in
ID = .950 in / 24.1 mm +/- 0.02 in
Ht = .570 in / 14.5 mm +/- 0.025 in
 AL=14 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 95
Color Code = Red / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
250 KHz - 10 MHz

T 200 – 2  Physical Dimensions



OD = 2.0 in / 50.8 mm +/- 0.025 in
ID = 1.25 / 31.8 mm +/- 0.025 in
Ht = .550 / 14.0 mm +/- 0.03 in
 AL=12 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 95
Color Code = Red / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
250 KHz - 10 MHz

T 200 – 6  Physical Dimensions



OD = 2.0 in / 50.8 mm +/- 0.025 in
ID = 1.25 / 31.8 mm +/- 0.025 in
Ht = .550 / 14.0 mm +/- 0.03 in
 AL=10.4 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 35
Color Code = Yellow / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
3 MHz - 40 MHz

T 225 – 2 B  Physical Dimensions



OD = 2.25 in / 57.2 mm +/- 0.025 in
ID = 1.40 / 35.6 mm +/- 0.025 in
Ht = 1.00 / 25.4 mm +/- 0.03 in
 AL=21.5 +/- 5 %      uH=(AL*Turns2)/1000 
Temperature Stability (ppm /°C) = 95
Color Code = Red / Clear
Optimum Resonant Circuit Range
for highest Q and lowest core loss
250 KHz - 10 MHz

FB - 43 – 101  Physical Dimensions



OD(A) = 0.138 in / 3.5 mm +/- 0.2 mm
ID(B) = 0.051 in / 1.3 mm +/- 0.10 mm
Ht(C) = 0.128 in / 3.25 mm +/- 0.25 mm
 AL=600 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 12500
Color Code = shiny black
Application Freq Range
RFI Suppression 5 - 500 MHz

FT 23 – 43   Physical Dimensions



OD(A) = 0.230 in / 5.95 mm +/- 0.25 mm
ID(B) = 0.120 in / 3.05 mm +/- 0.10 mm
Ht(C) = 0.060 in / 1.65 mm +/- 0.25 mm
 AL=158 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 12500
Color Code = shiny black
Application Freq Range
Wideband Transformers 5 - 400 MHz
Power Transformers 0.5 - 30 MHz
RFI Suppression 5 - 500 M

FT 37 – 43  Physical Dimensions



OD(A) = 0.375 in / 9.5 mm +/- 0.25 mm
ID(B) = 0.187 in. / 4.75 mm +/- 0.10 mm
Ht(C) = 0.125 in. / 3.3 mm +/- 0.25 mm
 AL=350 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 12500
Color Code = shiny black
Application Freq Range
Wideband Transformers 5 - 400 MHz
Power Transformers 0.5 - 30 MHz
RFI Suppression 5 - 500 MHz

FT 37 – 61  Physical Dimensions



OD(A) = 0.375 in / 9.5 mm +/- 0.25 mm
ID(B) = 0.187 in. / 4.75 mm +/- 0.10 mm
Ht(C) = 0.125 in. / 3.3 mm +/- 0.25 mm
 AL=55 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 1000
Color Code = dull black
Application Freq Range
Wideband Transformers 20 - 500 MHz
High-Q Inductor 0.2 - 10 MHz
RFI Suppression - above 20 MHz

FT 37 – 67  Physical Dimensions



OD(A) = 0.375 in / 9.5 mm +/- 0.25 mm
ID(B) = 0.187 in. / 4.75 mm +/- 0.10 mm
Ht(C) = 0.125 in. / 3.3 mm +/- 0.25 mm
 AL=20 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 500
Color Code = dull black
Application Freq Range
Wideband Transformers 50-1000 MHz
High-Q Inductor 0.5 - 30 MHz
RFI Suppression - above 50 MH

FT 50 – 43  Physical Dimensions



OD(A) = 0.5 in / 12.7 mm +/- 0.25 mm
ID(B) = 0.281 in / 7.15 mm +/- 0.20 mm
Ht(C) = 0.188 in / 4.9 mm +/- 0.25 mm
 AL=440 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 12500
Color Code = shiny black
Application Freq Range
Wideband Transformers 5 - 400 MHz
Power Transformers 0.5 - 30 MHz
RFI Suppression 5 - 500 MHz

FT 50 – 61  Physical Dimensions



OD(A) = 0.5 in / 12.7 mm +/- 0.25 mm
ID(B) = 0.281 in / 7.15 mm +/- 0.20 mm
Ht(C) = 0.188 in / 4.9 mm +/- 0.25 mm
 AL=69 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 1000
Color Code = dull black
Application Freq Range
Wideband Transformers 20 - 500 MHz
High-Q Inductor 0.2 - 10 MHz
RFI Suppression - above 20 MHz

FT 50 – 75  Physical Dimensions



OD(A) = 0.5 in / 12.7 mm +/- 0.25 mm
ID(B) = 0.281 in / 7.15 mm +/- 0.20 mm
Ht(C) = 0.188 in / 4.9 mm +/- 0.25 mm
 AL=4200 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 6000
Color Code = shiny black
Application Freq Range
Wideband Transformers 1 - 50 MHz
Power Transformers 0.1 - 3 MHz
RFI Suppression - above 1 MHz

FT 50 – J  Physical Dimensions



OD(A) = 0.5 in / 12.7 mm +/- 0.25 mm
ID(B) = 0.281 in / 7.15 mm +/- 0.20 mm
Ht(C) = 0.188 in / 4.9 mm +/- 0.25 mm
 AL=4200 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 6000
Color Code = shiny black
Application Freq Range
Wideband Transformers 1 - 50 MHz
Power Transformers 0.1 - 3 MHz
RFI Suppression - above 1 MHz

FT 82 – 43  Physical Dimensions



OD(A) = 0.825 in / 21.0 mm +/- 0.35 mm
ID(B) = 0.52 in / 13.2 mm +/- 0.30 mm
Ht(C) = 0.25 in / 6.35 mm +/- 0.25 mm
 AL=470 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 12500
Color Code = shiny black
Application Freq Range
Wideband Transformers 5 - 400 MHz
Power Transformers 0.5 - 30 MHz
RFI Suppression 5 - 500 MHz

FT 82 – 61  Physical Dimensions



OD(A) = 0.825 in / 21.0 mm +/- 0.35 mm
ID(B) = 0.52 in / 13.2 mm +/- 0.30 mm
Ht(C) = 0.25 in / 6.35 mm +/- 0.25 mm
 AL=79 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 1000
Color Code = dull black
Application Freq Range
Wideband Transformers 20 - 500 MHz
High-Q Inductor 0.2 - 10 MHz
RFI Suppression - above 20 MHz

FT 114 – 43  Physical Dimensions



OD(A) = 1.140 in / 29.0 mm +/- 0.65 mm
ID(B) = 0.748 in / 19.0 mm +/- 0.50 mm
Ht(C) = 0.295 in / 7.5 mm +/- 0.25 mm
 AL=510 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 12500
Color Code = shiny black
Application Freq Range
Wideband Transformers 5 - 400 MHz
Power Transformers 0.5 - 30 MHz
RFI Suppression 5 - 500 MHz

FT 114 – 61  Physical Dimensions



OD(A) = 1.140 in / 29.0 mm +/- 0.65 mm
ID(B) = 0.748 in / 19.0 mm +/- 0.50 mm
Ht(C) = 0.295 in / 7.5 mm +/- 0.25 mm
 AL=75 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 1000
Color Code = dull black
Application Freq Range
Wideband Transformers 20 - 500 MHz
High-Q Inductor 0.2 - 10 MHz
RFI Suppression - above 20 MHz

FT 140 – 43  Physical Dimensions



OD(A) = 1.400 in / 35.55 mm +/- 0.75 mm
ID(B) = 0.900 in / 23.0 mm +/- 0.55 mm
Ht(C) = 0.500 in / 12.7 mm +/- 0.50 mm
 AL=885 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 12500
Color Code = shiny black
Application Freq Range
Wideband Transformers 5 - 400 MHz
Power Transformers 0.5 - 30 MHz
RFI Suppression 5 - 500 MHz

FT 140 – 61  Physical Dimensions



OD(A) = 1.400 in / 35.55 mm +/- 0.75 mm
ID(B) = 0.900 in / 23.0 mm +/- 0.55 mm
Ht(C) = 0.500 in / 12.7 mm +/- 0.50 mm
 AL=150 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 1000
Color Code = dull black
Application Freq Range
Wideband Transformers 20 - 500 MHz
High-Q Inductor 0.2 - 10 MHz
RFI Suppression - above 20 MHz

FT 140 – 77  Physical Dimensions



OD(A) = 1.400 in / 35.55 mm +/- 0.75 mm
ID(B) = 0.900 in / 23.0 mm +/- 0.55 mm
Ht(C) = 0.500 in / 12.7 mm +/- 0.50 mm
 AL=2200 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 7000
Color Code = shiny black
Application Freq Range
Inductive applications for frequencies up to 100 KHz

FT 240 – 31  Physical Dimensions



OD(A) = 2.40 in / 61.0 mm +/- 1.30 mm
ID(B) = 1.40 in / 35.55 mm +/- 0.85 mm
Ht(C) = 0.50 in / 12.7 mm +/- 0.50 mm
 AL=3180 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 16000
Color Code = black
Application Freq Range
Wideband Transformers 1 - 300 MHz
Power Transformers 0.5 - 30 MHz
RFI Suppression 1 - 500 MHz

FT 240 – 43  Physical Dimensions



OD(A) = 2.40 in / 61.0 mm +/- 1.30 mm
ID(B) = 1.40 in / 35.55 mm +/- 0.85 mm
Ht(C) = 0.50 in / 12.7 mm +/- 0.50 mm
 AL=1075 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 12500
Color Code = shiny black
Application Freq Range
Wideband Transformers 5 - 400 MHz
Power Transformers 0.5 - 30 MHz
RFI Suppression 5 - 500 MHz

FT 240 – 61  Physical Dimensions



OD(A) = 2.40 in / 61.0 mm +/- 1.30 mm
ID(B) = 1.40 in / 35.55 mm +/- 0.85 mm
Ht(C) = 0.50 in / 12.7 mm +/- 0.50 mm
 AL=170 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 1000
Color Code = dull black
Application Freq Range
Wideband Transformers 20 - 500 MHz
High-Q Inductor 0.2 - 10 MHz
RFI Suppression - above 20 MHz

FT 290 – 43  Physical Dimensions



OD(A) = 2.90 in / 73.65 mm +/- 1.50 mm
ID(B) = 1.53 in / 38.85 mm +/- 0.75 mm
Ht(C) = 0.50 in / 12.7 mm +/- 0.40 mm
 AL=1275 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 12500
Color Code = shiny black
Application Freq Range
Wideband Transformers 5 - 400 MHz
Power Transformers 0.5 - 30 MHz
RFI Suppression 5 - 500 MHz

BN – 43 – 2402  Physical Dimensions



A=0.276 in / 7.0 mm +/- 0.25 mm
B=0.244 in / 6.2 mm +/- 0.25 mm
C=0.16 in / 4.2 mm +/- 0.25 mm
E=0.114 in / 2.9 mm +/- 0.1 mm
H=0.071 in / 1.7 mm +/- 0.2 mm
 AL=1440 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 12500
Color Code = shiny black
Application Freq Range
Wideband Transformers 5 - 400 MHz
Power Transformers 0.5 - 30 MHz
RFI Suppression 5 - 500 MHz


BN – 61 – 2402  Physical Dimensions



A=0.276 in / 7.0 mm +/- 0.25 mm
B=0.244 in / 6.2 mm +/- 0.25 mm
C=0.16 in / 4.2 mm +/- 0.25 mm
E=0.114 in / 2.9 mm +/- 0.1 mm
H=0.071 in / 1.7 mm +/- 0.2 mm
 AL=250 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 1000
Color Code = dull black
Application Freq Range
Wideband Transformers 20 - 500 MHz
Power Transformers 0.2 - 10 MHz
RFI Suppression above 20 MHz

BN – 43 – 1502  Physical Dimensions



A=0.525 in / 13.3 mm +/- 0.6 mm
B=0.260 in / 6.6 mm +/- 0.25 mm
C=0.295 in / 7.5 mm mm +/- 0.35 mm
E=0.225 in / 5.7 mm +/- 0.25 mm
H=0.150 in / 1.7 mm +/- 0.25 mm
 AL=1050 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 12500
Color Code = shiny black
Application Freq Range
Wideband Transformers 5 - 400 MHz
Power Transformers 0.5 - 30 MHz
RFI Suppression 5 - 500 MHz

BN – 61 – 1502  Physical Dimensions



A=0.525 in / 13.3 mm +/- 0.6 mm
B=0.260 in / 6.6 mm +/- 0.25 mm
C=0.295 in / 7.5 mm mm +/- 0.35 mm
E=0.225 in / 5.7 mm +/- 0.25 mm
H=0.150 in / 1.7 mm +/- 0.25 mm
 AL=278 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 1000
Color Code = dull black
Application Freq Range
Wideband Transformers 20 - 500 MHz
High-Q Inductor 0.2 - 10 MHz
RFI Suppression above 20 MHz

BN – 43 – 302  Physical Dimensions



A=0.525 in / 13.3 mm +/- 0.6 mm
B=0.407 in / 10.3 mm +/- 0.3 mm
C=0.295 in / 7.5 mm mm +/- 0.35 mm
E=0.225 in / 5.7 mm +/- 0.25 mm
H=0.150 in / 1.7 mm +/- 0.25 mm
 AL=1280 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 12500
Color Code = shiny black
Application Freq Range
Wideband Transformers 5 - 400 MHz
Power Transformers 0.5 - 30 MHz
RFI Suppression 5 - 500 MHz

BN – 43 – 202  Physical Dimensions



A=0.525 in / 13.3 mm +/- 0.6 mm
B=0.565 in / 14.35 mm +/- 0.5 mm
C=0.295 in / 7.5 mm +/- 0.35 mm
E=0.225 in / 5.7 mm +/- 0.25 mm
H=0.150 in / 3.8 mm +/- 0.25 mm
 AL=2200 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 12500
Color Code = shiny black
Application Freq Range
Wideband Transformers 5 - 400 MHz
Power Transformers 0.5 - 30 MHz
RFI Suppression 5 - 500 MHz

BN – 61 – 202  Physical Dimensions



A=0.525 in / 13.3 mm +/- 0.6 mm
B=0.565 in / 14.35 mm +/- 0.5 mm
C=0.295 in / 7.5 mm +/- 0.35 mm
E=0.0.225 in / 5.7 mm +/- 0.25 mm
H=0.150 in / 3.8 mm +/- 0.25 mm
 AL=385 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 1000
Color Code = dull black
Application Freq Range
Wideband Transformers 20 - 500 MHz
High-Q Inductor 0.2 - 10 MHz
RFI Suppression - above 20 MHz

BN – 73 – 202  Physical Dimensions



A=0.525 in / 13.3 mm +/- 0.6 mm
B=0.565 in / 14.35 mm +/- 0.5 mm
C=0.295 in / 7.5 mm +/- 0.35 mm
E=0.0.225 in / 5.7 mm +/- 0.25 mm
H=0.150 in / 3.8 mm +/- 0.25 mm
 AL=12000 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 6500
Color Code = black
Application Freq Range
Wideband Transformers 0.2 - 30 MHz
High-Q Inductor 0.001 - 1.0 MHz
RFI Suppression - above 1.0 MHz

BN - 43 – 3312  Physical Dimensions



A=0.765 in / 19.45 mm +/- 0.4 mm
B=1.00 in / 25.4 mm +/- 0.7 mm
C=0.375 in / 9.5 mm +/- 0.25 mm
E=0.390 in / 9.9 mm +/- 0.25 mm
H=0.187 in / 4.75 mm +/- 0.2 mm
 AL=7000 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 12500
Color Code = shiny black
Application Freq Range
Wideband Transformers 5 - 400 MHz
Power Transformers 0.5 - 30 MHz
RFI Suppression 5 - 500 MHz

BN - 43 - 7051  Physical Dimensions



A=1.130 in / 28.7 mm +/- 0.6 mm
B=1.13 in / 28.7 mm +/- 0.7 mm
C=0.560 in / 14.25 mm +/- 0.3 mm
E=0.550 in / 14.0 mm +/- 0.3 mm
H=0.250 in / 6.35 mm +/- 0.15 mm
 AL=10000 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 12500
Color Code = shiny black
Application Freq Range
Wideband Transformers 5 - 400 MHz
Power Transformers 0.5 - 30 MHz
RFI Suppression 5 - 500 MHz

BN – 61 – 002  Physical Dimensions



A=1.19 in / 30.2 mm +/- 0.6 mm
B=1.13 in / 28.7 mm +/- 0.7 mm
C=0.590 in / 15.0 mm +/- 0.4 mm
E=0.0.550 in / 14.0 mm +/- 0.3 mm
H=0.268 in / 6.8 mm +/- 0.2 mm
 AL=1770 +/- 20 %      uH=(AL*Turns2)/1000
Actual measured AL using 10 turns #28 wire
Temperature Stability (ppm /°C) = 1000
Color Code = dull black
Application Freq Range
Wideband Transformers 20 - 500 MHz
High-Q Inductor 0.2 - 10 MHz
RFI Suppression - above 20 MHz