2744040447 Fair-Rite, 2744040447 Datasheet - Page 154

• Manufacturer Part Number: 2744040447
• Description: 44 SM Ferrite Beads, T&R
• Manufacturer: Fair-Rite

Fair-Rite Products Corp.
Phone: (888) FAIR RITE / [phone]
154
The PQ core was developed for use in power applications. The large core surface area for the
volume of the core aids in heat dissipation.
These cores are employed both in filter and transformer designs in switched-mode power sup-
plies.
• Part number is for a single core.
• PQ cores can be supplied with the center post gapped to a mechanical dimension.
• PQ cores can also be gapped to an A
• A
• See section “The Effect of Direct Current on the Inductance of a Ferrite Core” on page 165 for curves of A
• For any PQ core requirement not listed in the catalog, please contact our customer service group
Dimensions
*Bold part numbers designate preferred parts.
PQ Cores
for availability and pricing.
Part Number *
6677201621
6678201621
6677202021
6678202021
6677262021
6678262021
6677262521
6678262521
6677322021
6678322021
6677323021
6678323021
6677353521
6678353521
6677404021
6678404021
L
value is measured at 1kHz, <10 gauss.
[phone]
(Bold numbers are in millimeters, light numbers are nominal in inches.)
27.25±0.45
27.25±0.45
27.25±0.45
27.25±0.45
21.25±0.4
21.25±0.4
21.25±0.4
21.25±0.4
33.0±0.5
33.0±0.5
33.0±0.5
33.0±0.5
36.1±0.6
41.5±0.9
41.5±0.9
36.1±0.6
1.073
1.300
1.073
1.300
1.300
1.300
1.073
1.633
1.073
1.422
1.422
1.633
.837
.837
.837
.837
A
15.3-0.25
20.0-0.25
10.2-0.25
10.2-0.25
10.4-0.25
10.4-0.25
15.3-0.25
17.5-0.25
20.0-0.25
12.5-0.25
12.5-0.25
17.5-0.25
10.1±0.1
10.1±0.1
8.1±0.1
8.1±0.1
.487
.319
.397
.406
.597
.319
.398
.398
.406
.597
.397
.487
.684
.684
.782
.782
B
L
value. These cores will be supplied as sets.
• FAX: (888) FERRITE / [phone] • www.fair-rite.com • E-Mail: [e-mail]
19.0±0.45
19.0±0.45
19.0±0.45
19.0±0.45
22.0±0.5
28.0±0.6
14.0±0.4
14.0±0.4
14.0±0.4
14.0±0.4
22.0±0.5
22.0±0.5
22.0±0.5
26.0±0.5
28.0±0.6
26.0±0.5
1.102
1.024
1.024
1.102
.748
.551
.748
.866
.866
.551
.551
.551
.866
.866
.748
.748
C
[phone]
12.35+0.3
12.35+0.3
10.5+0.3
14.6+0.3
10.5+0.3
14.6+0.3
5.0+0.3
5.0+0.3
7.0+0.3
7.0+0.3
5.6+0.3
5.6+0.3
5.6+0.3
5.6+0.3
7.9+0.3
7.9+0.3
.317
.419
.203
.203
.281
.281
.226
.226
.226
.419
.226
.581
.317
.492
.492
.581
D
P.O. Box J,One Commercial Row, Wallkill, NY 12589-0288
Note: (914) Area Code has changed to (845).
22.5±0.45
22.5±0.45
22.5±0.45
22.5±0.45
27.5±0.5
37.0±0.6
18.0±0.4
18.0±0.4
18.0±0.4
18.0±0.4
27.5±0.5
27.5±0.5
27.5±0.5
32.0±0.5
37.0±0.6
32.0±0.5
1.083
1.083
1.083
1.083
1.457
1.260
1.260
1.457
.886
.709
.886
.709
.709
.709
.886
.886
E
13.45±0.25
13.45±0.25
13.45±0.25
13.45±0.25
14.35±0.25
14.35±0.25
14.9±0.3
12.0±0.2
12.0±0.2
12.0±0.2
14.9±0.3
12.0±0.2
8.8±0.2
8.8±0.2
8.8±0.2
8.8±0.2
.472
.346
.472
.530
.530
.346
.346
.346
.530
.530
.472
.472
.565
.565
.587
.587
F
G Min.
1.102
1.102
.610
.472
.610
.748
.748
.472
.472
.472
.748
.748
.610
19.0
28.0
12.0
12.0
12.0
12.0
15.5
15.5
15.5
.610
19.0
19.0
19.0
.925
23.5
.925
28.0
15.5
23.5
L
vs. gap length.
H Min.
.236
.216
.158
.158
.158
.158
.236
.216
.216
.216
.236
6.35
.250
.236
.234
5.95
.234
.250
6.35
5.95
4.0
4.0
4.0
4.0
6.0
6.0
5.5
5.5
5.5
5.5
6.0
6.0
14th Edition
13.6±0.25
13.6±0.25
11.0-0.5
11.0-0.5
12.8-0.5
12.8-0.5
12.8-0.5
12.8-0.5
13.1-0.5
11.0-0.5
11.0-0.5
13.1-0.5
8.4-0.5
8.4-0.5
8.4-0.5
8.4-0.5
.423
.321
.423
.494
.494
.321
.321
.321
.494
.494
.423
.423
.506
.506
.535
.535
J