Common Mode Chokes
For DC and single-phase AC power lines
●Single-phase FM coils
FM series single-phase common mode chokes with FT-1KM
KN cores (p. 30) are compact in size and have excellent
electromagnetic noise suppression properties.
Table 3. Standard Specifications
Item
Rated voltage
Specification
AC250V or DC250V
Insulation voltage rating
Insulation resistance
Insulation grade
AC1.5kV for 1min. or AC1.8kV for 3 sec.
Over 100MΩ after applying DC500V for 1 min.
Class E (120 ºC)
Temperature rise
45 ºC *
Operating temperature range
-40 ºC – +120 ºC (including temperature rise)
• The above specifications are in accordance with Electrical Appliance and Material Control Law, UL, CSA and IEC standards.
• No Ozone Layer Depleting Chemicals are used in these products or in their manufacturing process.
* Note 1: The temperature rise in Table 1 is a projected value based on temperature increase by the heat from DC resistance of the coil when the rated current (DC
or 50/60Hz) in Table 2 is conducted.
* Note 2: The temperature rise is affected by the mounting condition on the circuit board and the amount of harmonic distortion on the load current. Please make
sure that the temperatures of the coil and the terminals are not exceeded the operating temperature range.
Table 4. Product code, part number and specifications
DC
Resistance
(mΩ)
L (mH)
100kHz Diameter
Rated
current
(A)
10
Wire
Weight
(g)
Finished dimensions (mm)
Product
code
P/N
10kHz
MIN.
29.3
18.0
9.4
A
MAX.
50
51
52
54
50
53
54
55
55
55
55
55
55
55
55
55
71
73
73
B
MAX.
32
34
35
37
37
39
42
43
34
37
38
40
40
42
45
46
41
42
42
F
Ref.
7
G
Ref.
25
25
25
25
32
32
32
32
37
37
37
37
37
37
37
37
50
50
50
MIN.
7.5
4.6
2.4
1.4
10.6
6.8
3.8
2.9
7.5
4.6
2.4
1.4
10.6
6.8
3.8
2.9
5.6
1.9
1.2
(mm)
1.4
TYP.
107
123
117
120
146
168
160
166
110
126
120
123
151
170
162
168
295
273
253
MAX.
F1AH0249
F1AH0250
F1AH0251
F1AH0252
F1AH0253
F1AH0254
F1AH0255
F1AH0256
F1AH0257
F1AH0258
F1AH0259
F1AH0260
F1AH0261
F1AH0262
F1AH0263
F1AH0264
F1AH0265
F1AH0266
F1AH0267
FM10G752MB
FM15G462MB
FM20G242MB
FM25G142MB
FM10I113MB
20
10
6
15
1.8
7
20
2.0
7
25
5.6
2.3
7
4
10
44.4
26.9
13.7
10.3
29.3
18.0
9.4
1.5
10
10
10
10
27
27
27
27
27
27
27
27
40
40
40
25
12
7
FM15I682MB
15
1.9
FM20I382MB
20
2.1
FM25I292MB
25
2.3
5
FM10G752MYB
FM15G462MYB
FM20G242MYB
FM25G142MYB
FM10I113MYB
FM15I682MYB
FM20I382MYB
FM25I292MYB
FM20S562MYB
FM30S192MYB
FM40S122MYB
10
1.4
20
10
6
15
1.8
20
2.0
25
5.6
2.3
4
10
44.4
26.9
13.7
10.3
22.5
7.5
1.5
25
12
7
15
1.9
20
2.1
25
2.3
5
20
2.4
9
30
2.0x2
1.9x3
4
40
5.0
2
• Part numbers with the last digit as “MB” are vertical type (Figure 12), and part numbers with the last digit as “MYB” are Horizontal type (Figure 13).
• UL94V-0 certified resin is used for the case and the base plate.
• Custom made coils are also available.
12