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ISDN-S Interface Dual Transformers
ELECTRONICS INC.
EPR1261G
* Optimized for Leading Transceiver I.C.'s * * Meets CCITT 1.430 Four Wire "S" Interface * * Meets or exceeds UL1459, UL1950 Standards * * 1500 Vrms Isolation (1 Minute) *
Electrical Parameters @ 25 C
OCL (mH Min.) @ 10 KHz, 1 Vrms 20 Pins 1-3 Pins 6-8 Cw/w (pF Max.) @ 100 KHz, .02 Vrms 130 Pins 1-3 to 16-14 Pins 6-8 to 11-9 Leakage Inductance (H Max.) @ 100 KHz, .02 Vrms 5 Pins 1-3 w/ 16-14 shorted Pins 6-8 w/ 11-9 shorted Turns Ratio 1:2CT ----Pri. DCR ( Max.) 2.65 ----Sec. DCR ( Max.) 5 ----Primary Pins 1,3/6,8 -----
Schematic
Secondary (Chip Side) 16 15 14 13 12 11 10 9
Primary (Line Side) 1 2 3 4 5 6 7 8
Package
A J PCA EPR1261G D.C. N
Dimensions
Dim. Min. (Inches) Max. Nom. Min. (millimeters) Max. Nom.
B
Q
Solder Pad Layout
P
Pin 1 I.D.
D
M
C
E
K
H
F
L G
I
A B C D E F G H I J K L M N P Q
Rev. 1 5/3/05 JDG
.930 .570 .385 --.005 --.725 .018 .008 --0 .025 ---------
.950 .590 .405 --.015 --.745 .022 .012 --8 .045 ---------
.940 .580 .395 .700 .010 .100 .735 .020 .010 .120 --.035 .030 .100 .085 .780
23.62 14.48 9.78 --.127 --18.41 .457 .203 --0 .635 ---------
24.14 14.99 10.29 --.381 --18.92 .559 .305 --8 1.14 ---------
23.88 14.73 10.03 17.78 .254 2.54 18.67 .508 .254 3.05 --.889 .762 2.54 2.16 19.81
PCA ELECTRONICS, INC. 16799 SCHOENBORN ST. NORTH HILLS, CA 91343
CSR1261G
Product performance is limited to specified parameters. Data is subject to change without prior notice.
TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com

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