U Cores (9077026002)
Part Number: 9077026002
77 U CORE
Explanation of Part Numbers: Digits 1&2 = product class, 3&4 = material grade.
The U core offers an economical core design with a nearly uniform cross- sectional area. In a power ferrite material they are
frequently used in output chokes, power input filters and transformers for switched- mode power supplies and HF fluorescent
ballasts.
For any U core requirement not listed in the catalog, please contact our customer service group for availability and pricing.
Weight indicated is per pair or set.
Weight: 15 (g)
Chart Legend
•An I core, 9377024002, is available for these U cores. See I
Core Section of our catalog.
Σl/ A : Core Constant, l
e
: Effective Path Length, A
e
: Effective Cross- Sectional Area, V
e
:
Effective Core Volume
A
L
: Inductance Factor
Electrical Properties
A
L
(nH) 940 Min
Ae(cm
2
) 0.4
Σl/ A(cm
-1
) 17.6
l
e
(cm) 7.1
V
e
(cm
3
) 2.85
A
L
value is measured at 1kHz, < 10 gauss. These U cores have the same minimum cross- sectional area as the listed effective
cross- sectional area.
Fair- Rite Products Corp. • One Commercial Row, Wallkill, New York 12589-0288
888-324-7748 • 845-895-2055 • Fax: 845-895-2629 • ferrites@fair- rite.com • www.fair- rite.com
Dim mm mm tol nominal inch inch misc.
A 25.4 ±0.75 1 _
B 12.6 +0.25 0.5 _
C 6.6 -0.50 0.25 _
D 6.2 Min 0.244 Min
E 12.45 Min 0.49 Min
