Noguchi Transformers
using Finemet core, made in Japan.






Single-Ended output transformers
 
 
             
Type
Primary imp.
Secondary
Max. current
Power
Prim. Inductance
Freq. response (-3dB)
Dimensions
(mm)
 
 
 
FM-50WS-3K
3K (+UL tap)
4 - 6 - 8 - 16
170mA
50W (50Hz)
21H (1Khz/65mA)
6Hz-54KHz (3K/65mA)
100x100x150
 
       
 
FM-50WS-2K
2K (+UL tap)
4 - 6 - 8 - 16
200mA
50W (50Hz)
15H (1Khz/90mA)
5Hz 45KHz (2K/90mA)
100x100x150
 
       
 

FM-24WS
2,5K
3,5K (+UL tap)
5K
4 - 6 - 8
4 - 6 - 8 - 16
6 - 8 - 16

160mA

24W (40Hz)

14H (100Hz/60mA)

8Hz-83KHz (3,5K/60mA)

100x90x120
 
   
       
 
FM-24WS-211
7K
10K
4 - 6 - 8 - 16
6 - 8 - 16
70mA
24W (40Hz)
34H (100Hz/70mA)
8Hz-70KHz (7K-8/70mA)
100x90x120
 
   
       
 
FM-24WS-3K
3K (+UL tap)
4 - 6 - 8 - 16
110mA
24W (40Hz)
32H (1KHz/60mA)
8Hz-80KHz (3K/60mA)
100x90x120
 
   
       
 
FM-24WS-2,5K
2,5K (+UL tap)
4 - 6 - 8 - 16
100mA
24W (40Hz)
25H (1KHz/60mA)
8Hz-65KHz (2,5K/60mA)
100x90x120
 
   
       
 

FM-20WS
2,5K
3,5K (+UL tap)
5K
4 - 6 - 8 - 16
8 - 16
8 - 16

130mA

20W (34Hz)

21H (1Khz/70mA)

9Hz-52KHz (5K-8/70mA)

80x80x120
 
                 
FM-20WS-10K
10K (+UL tap)
4 - 6 - 8 - 16
80 mA
20W (50Hz)
49H (100Hz/30mA)
15Hz-42KHz (10K-8/30mA)
80x80x120
 
                 

FM-20WS
2,5K
3,5K (+UL tap)
5K
4 - 6 - 8 - 16
8 - 16
8 - 16

130mA

20W (34Hz)

21H (1Khz/70mA)

9Hz-52KHz (5K-8/70mA)

80x80x120
 
                 

FM-14WS
2,5K
3,5K (+UL tap)
5K
7K
4 - 6 - 8
4 - 6 - 8 - 16
4 - 6 - 8
8 - 16

90mA

14W (50Hz)

18H (1Khz/60mA)

14Hz-60KHz (3,5K/60mA)

80x71x120
 
                 

FM-6WS
2,5K
3,5K (+UL tap)
5K
4 - 6 - 8 - 16
6 - 8 - 16
8 - 16

80mA

6W (50Hz)

10H (100Hz/60mA)

25Hz-65KHz (3,5K/60mA)

85x57x54
 
                 

FM-6WS-H
7K
10K (+UL tap)
14 K
4 - 6 - 8 - 16
6 - 8 - 16
8 - 16

80mA

6W (50Hz)

30H (100Hz/30mA)

25Hz-50KHz (7K-8/30mA)

85x57x54
 
                 
FM-3WS
5K
7K
4 - 8 - 16
4 - 8 - 16
40mA
35mA
3W (70Hz)
20H (1Khz/18mA)
25Hz-50KHz (7K/18mA)
65x50x65
 
                 
FM-3WS-H
10K
14K
4 - 8 - 16
4 - 8 - 16
30mA
25mA
3W (70Hz)
20H (1Khz/18mA)
25Hz-40KHz (10K/15mA)
65x50x65
 
                 
FM-3WS-L
2,5K
3,5K
4 - 8 - 16
4 - 8 - 16
55mA
45mA
3W (70Hz)
20H (1Khz/18mA)
25Hz-50KHz (3,5K/20mA)
65x50x65
 
                 
FM-H1WS
5K-7K
2,5K-3,5K
32-64-128-256
16-32-64-128
1W (50Hz)
20Hz-30KHz (5K/60mA)
85x57x54
 
                 
                 




FINEMET 


FINEMET® is registered trade mark of Hitachi Metals Ltd.

FINEMET® is a Nanocrystalline amorphous soft magnetic metal. It's phase characteristics is far better than conventional core material such as Ni and Co-based amorphous metal. Amorphous metals do not have a crystalline structure like other magnetic materials. All the atoms in an amorphous metal are randomly arranged, thus giving it a higher resistivity (about three times) value than that for crystalline counterparts. Amorphous alloys are prepared by cooling the melt at a rate of about million degrees per second. This fast cooling does not give the atoms enough time to rearrange into a stable crystalline form. As a result one gets metastable amorphous structure. Because of the absence of crystalline structure amorphous alloys are magnetically soft (lower coercivity, lower core loss, higher permeability). High resistivity gives lower loss at higher frequencies. The losses are among the lowest of any known magnetic materials.

Features:
1) Satisfy both high saturation magnetic flux density and high permeability
High saturation magnetic flux density comparable to Fe-based amorphous metal. High permeability comparable to Co-based amorphous metal.

2) Low core loss.
1/5th the core loss of Fe based amorphous metal and
approximately the same core loss as Co-based amorphous metal.

3) Low magnetostriction.
Less affected by mechanical stress. Very low audio noise emission.

4) Excellent temperature characteristics and small aging effects.
Small permeability variation (less than ±10%) at a temperature range of -50°C~150°C. Unlike Co-based amorphous metals, aging effects are very small.

5) Excellent high frequency characteristics.
High permeability and low core loss over wide frequency range, which is equivalent to Co-based amorphous metal.

6) Flexibility to control magnetic properties “B-H curve shape” during annealing
Three types of B-H curve squareness, high, middle and low remanence ratio, corresponding to various applications.


Noguchi FM-24WS



Noguchi FM-6WS



Noguchi FM-3WS