© 2007 Cooper Bussmann
St. Louis, MO 63178
www.cooperbussmann.com
1207 BU-SB07326 Page 7 of 7 Data Sheet 4311
This bulletin is intended to present product design solutions and technical information that will help the end user with design applications. Cooper Bussmann reserves the right, without notice,
to c
hange design or construction of any products and to discontinue or limit distribution of any products. Cooper Bussmann also r
eser
ves the right to c
hange or update
, without notice, any
tec
hnical information contained in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications.
Life Support Policy: Cooper Bussmann does not authorize the use of any of its products for use in life support devices or systems without the express written approval of an officer of the
Company. Life support systems ar
e devices which support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling,
can be reasonably expected to result in significant injury to the user.
North America
Cooper Bussmann
1225 Broken Sound Parkway NW
Suite F
Boca Raton, FL 33487-3533
Tel: 1-561-998-4100
Fax: 1-561-241-6640
Toll Free: 1-888-414-2645
Cooper Bussmann
P.O. Box 14460
St. Louis, MO 63178-4460
Tel: 1-636-394-2877
Fax: 1-636-527-1607
Europe
Cooper Bussmann
Cooper (UK) Limited
Burton-on-the-Wolds
Leicestershire • LE12 5TH UK
Tel: +44 (0) 1509 882 737
Fax: +44 (0) 1509 882 786
Cooper Bussmann
A
vda. Santa Eulalia, 290
08223
Terrassa, (Barcelona), Spain
T
el:
+34 937 362 812
+34 937 362 813
Fax: +34 937 362 719
Asia Pacific
Cooper Bussmann
1 Jalan Kilang Timor
#06-01 Pacific Tech Centre
Singapore 159303
Tel: +65 278 6151
Fax: +65 270 4160
0
1
0
20
3
0
4
0
50
6
0
70
8
0
9
0
100
0
20 40 60 80 100 120 140 160
% of I
sat
OCL (%)
OCL vs I
s
at
DRQ73
0
20
4
0
6
0
80
100
0
20 40 60 80 100 120 140 160 180
%
of I
sat
OCL (%)
OCL vs I
sat
DRQ74
0
10
20
3
0
4
0
50
60
7
0
80
90
1
00
0
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
%
of I
sat
OCL (%)
OCL vs I
s
at
DRQ125
0
10
20
3
0
40
50
6
0
70
80
90
1
00
0
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
%
of I
sat
OCL (%)
OCL vs I
sat
DRQ127
I
rms
DERATING WITH CORE LOSS
% of Applied Volt-µSecond
% of Losses from I
rms
(maximum)
300 KHz
200 KHz
100 KHz
50 KHz
25 KHz
I
nductance Characteristics
Core Loss
