Iron Powder Toroids, Magnet Wire, & Q-Dope

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IRON POWDER TOROID CORES


Wound Toroid
Iron powder toroids are suitable for tuned tank circuits, filters, Pi network inductors, etc. They are more stable than ferrites and do not saturate as easily. They are available in a number of different mixes. For best "Q" use the mix specified for your frequency. The cores are color coded to show the mix. See table below. 
To find the correct number of turns for your coil use the formula at right. Turns=100


Unwound Toroid

CHART SHOWING µH PER 100 TURNS
Available in sizes that have µH PER 100 
Turns shown in table (NA=Not Available)
CORE
SIZE
MIX
0
100-300
MHz
TAN
MIX
1
..5-5
MHz
BLUE
MIX
2
2-30
MHz
RED
MIX
3
.05-5
MHz
GREY
MIX
6
10-50
MHz
YELLOW
MIX
10
30-100
MHz
BLACK
MIX
12
50-200
MHz
MIX
15
.1-2
MHz
RED/WHT
MIX
26
0-1
MHz
YEL/WHT
SIZE
0D
(in)
SIZE
ID
(in)
SIZE
HT
(in)
T12
T16
T20
T25
T30
T37
T44
T50
T68
T80
T94
T106
T130
T200
T225
T225A
T300
T400

3.0
3.0
3.5
4.5
6.0
4.9
6.5
6.4
7.5
8.5
10.6
19.0
15.0
NA
NA
NA
NA
NA

48
44
52
70
85
80
105
100
115
115
160
325
200
250
NA
NA
NA
NA
20
22
27
34
43
40
52
49
57
55
84
135
110
120
120
215
115
185

60
61
90
100
140
120
180
175
195
180
248
450
350
425
425
NA
NA
NA

17
19
22
27
36
30
42
40
47
45
70
116
96
100
100
NA
NA
NA

12
13
16
19
25
25
33
31
32
32
58
NA
NA
NA
NA
NA
NA
NA

7
8
10
12
16
15
19
18
21
22
NA
NA
NA
NA
NA
NA
NA
NA

50
55
65
85
93
90
160
135
180
170
200
NA
250
NA
NA
NA
NA
NA
NA
NA
NA
NA
325
275
360
320
420
450
590
900
785
895
950
NA
825
1320
0.12
0.16
0.20
0.25
0.30
0.37
0.44
0.50
0.68
0.80
0.94
1.06
1.30
2.00
2.25
2.25
3.05
4.00
0.06
0.08
0.09
0.12
0.15
0.20
0.23
0.30
0.37
0.50
0.56
0.57
0.78
1.25
1.40
1.40
1.93
2.25
0.05
0.06
0.07
0.10
0.13
0.13
0.16
0.19
0.19
0.25
0.31
0.44
0.44
0.55
0.55
1.00
0.50
0.65
Pricing and Ordering

T12 TYPE

T16 TYPE
Part No. Price QTY Part No. Price QTY
T12-0 $0.40 T16-0 $0.40
T12-1 $0.40 T16-1 $0.40
T12-2 $0.40 T16-2 $0.40
T12-3 $0.40 T16-3 $0.40
T12-6 $0.40 T16-6 $0.40
T12-10 $0.40 T16-10 $0.40
T12-12 $0.40 T16-12 $0.40
T12-15 $0.40 T16-15 $0.40

T20 TYPE

T25 TYPE
Part No. Price QTY Part No. Price QTY
T20-0 $0.40 T25-0 $0.40
T20-1 $0.40 T25-1 $0.40
T20-2 $0.40 T25-2 $0.40
T20-3 $0.40 T25-3 $0.40
T20-6 $0.40 T25-6 $0.40
T20-10 $0.40 T25-10 $0.40
T20-12 $0.40 T25-12 $0.40
T20-15 $0.40 T25-15 $0.40

T30 TYPE

T37 TYPE
Part No. Price QTY Part No. Price QTY
T30-0 $0.50 T37-0 $0.55
T30-1 $0.50 T37-1 $0.55
T30-2 $0.50 T37-2 $0.55
T30-3 $0.50 T37-3 $0.55
T30-6 $0.50 T37-6 $0.55
T30-10 $0.50 T37-10 $0.55
T30-12 $0.50 T37-12 $0.55
T30-15 $0.50 T37-15 $0.55
T30-26 $0.50 T37-26 $0.55

T44 TYPE

T50 TYPE
Part No. Price QTY Part No. Price QTY
T44-0 $0.60 T50-0 $0.65
T44-1 $0.60 T50-1 $0.65
T44-2 $0.60 T50-2 $0.65
T44-3 $0.60 T50-3 $0.65
T44-6 $0.60 T50-6 $0.65
T44-10 $0.60 T50-10 $0.65
T44-12 $0.60 T50-12 $0.65
T44-15 $0.60 T50-15 $0.65
T44-26 $0.60 T50-26 $0.65

T68 TYPE

T80 TYPE
Part No. Price QTY Part No. Price QTY
T68-0 $0.90 T80-0 $1.20
T68-1 $0.90 T80-1 $1.20
T68-2 $0.90 T80-2 $1.20
T68-3 $0.90 T80-3 $1.20
T68-6 $0.90 T80-6 $1.20
T68-10 $0.90 T80-10 $1.20
T68-12 $0.90 T80-12 $1.20
T68-15 $0.90 T80-15 $1.20
T68-26 $0.90 T80-26 $1.20

T94 TYPE

T106 TYPE
Part No. Price QTY Part No. Price QTY
T94-0 $1.50 T106-0 $2.25
T94-1 $1.50 T106-1 $2.25
T94-2 $1.50 T106-2 $2.25
T94-3 $1.50 T106-3 $2.25
T94-6 $1.50 T106-6 $2.25
T94-10 $1.50 T106-26 $2.25
T94-15 $1.50      
T94-26 $1.50      

T130 TYPE

T200 TYPE
Part No. Price QTY Part No. Price QTY
T130-0 $2.75 T200-1 $6.50
T130-1 $2.75 T200-2 $6.50
T130-2 $2.75 T200-3 $6.50
T130-3 $2.75 T200-6 $6.50
T130-6 $2.75 T200-26 $6.50
T130-15 $2.75      
T130-26 $2.75      

T225 TYPE

T225A TYPE
Part No. Price QTY Part No. Price QTY
T225-2 $7.00 T225A-2 $8.75
T225-3 $7.00      
T225-6 $7.00      
T225-26 $7.00      

T300 TYPE

T400 TYPE
Part No. Price QTY Part No. Price QTY
T300-2 $11.75 T400-2 $12.75
T300-26 $11.75 T400-26 $12.75
POPULAR IRON POWDER TOROID ASSORTMENT KIT


Multi-compartment plastic storage box included

INCLUDES 2 EACH

T25-2, T25-6, T37-2, T37-6, T37-12, T44-2, 
T50-10, T80-2

INCLUDES 3 EACH

T50-2, T50-3, T50-6, T68-2, T68-3, T68-6

PTA-2..................................$26.88
Magnet Wire

Enamel coated copper. For winding Coils, Toroids, and Transformers. All prices for 1/4lb spools. This is a standard round, pure copper wire with a polyamide enamel inner-coat and polyurethane over coat; Thermo Class 130. The insulation will stand up and not crack during winding of tight coils, high speed winding etc.

Part Number

Gauge

Aprox. Footage

Price Each Roll

 QTY

MW14

14

20

$5.10

MW16

16

32

$525

MW18

18

51

$5.40

MW20

20

81

$5.50

MW22

22

129

$5.70

MW24

24

204

$5.85

MW26

26

327

$5.95

MW28

28

520

$6.50

MW30

30

825

$6.75

MW32

32

1290

$7.20

MW34

34

2080

$7.80

MW36

36

3300

$8.25

MW38

38

5150

$8.80

MW40

40

8600

$10.25

Q-DOPE
Solution of pure polystyrene in solvents. Dries fast and leaves a clear, 
protective coating on toroids, coils and transformers, with no or minimal 
effect on inductive values. May also be used as a cement for molded or 
fabricated items made of polystyrene.

THIS ITEM CAN ONLY SHIP UPS GROUND. NO US MAIL SHIPPING. 
NO SHIPMENTS OUTSIDE OF THE UNITED STATES, INCLUDING 
ALASKA AND HAWAII.
10-3702................$7.95

**Disclaimer:
           Toroids are very fragile. We do not like to ship them overseas due to the rough handling of the packages. We do ship them however if a customer still wishes us to. The customer assumes all responsibility for the received package. Ocean State Electronics shall not be responsible for any broken items received.
 Broken items will not be replaced or issued credit for.