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Composite Cores

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Typical Applications: These Ferrite/Iron Powder Composite Cores produce a large change in inductance with DC bias such that 10 to 20 times more inductance will exist at low current than at maximum current. This characteristic is particularly useful for producing DC output chokes for switching power supplies that must maintain continuous operation to very low loads as well as some EMI Filter applications. See DC energy storage curves.

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MAGNETIC DIMENSIONS
MICROMETALS
Part No.
AL
nH/N2
OD
in/mm
ID
in/mm
Ht
in/mm

cm
A*
cm2
V
cm3

ST50-267
450
.510/13.0
.290/7.37
.280/7.11
3.19
.189
.603

ST50-275B
475
.510/13.0
.290/7.37
.365/9.27
3.19
.246
.786
-

ST83-267
625
.835/21.2
.510/13.0
.400/10.2
5.37
.398
2.14

ST83-275B
650
.835/21.2
.510/13.0
.525/13.3
5.37
.523
2.81
-

ST102-267
800
1.025/26.0
.600/15.2
.475/12.1
6.48
.619
4.01

ST102-275B
825
1.025/26.0
.600/15.2
.625/15.9
6.48
.814
5.28
-

ST150-267
1250
1.520/38.6
.835/21.2
.625/15.9
9.40
1.31
12.3

ST150-275B
1300
1.520/38.6
.835/21.2
.825/21.0
9.40
1.73
16.3
-

ST200-267
1275
2.010/51.1
1.240/31.5
.775/19.7
13.0
1.83
23.7

ST 200-275B
1325
2.010/51.1
1.240/31.5
1.025/26.0
13.0
2.42
31.4
*Combined A

Click Here for Curve Fit Formula
Click Here for Percent Initial Permeability vs. DC Magnetizing Force Graph
Click Here for Quick Reference AL Values

 

 

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