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T1/E1/ CEPT Quad Port Transformer
ELECTRONICS INC.
EPA3557S
* 4 Transmit, 4 Receive Quad Port surface mount Transformer * 1500 Vrms Isolation * * Operating Temperature -0C to 70C *
*
Electrical Parameters @ 25 C
Primary Inductance (mH Min.) @ 100 KHz, 0.1 Vrms Leakage Inductance (H Max.) @ 100 KHz, 0.1 Vrms Interwinding Capacitance (pF Max.) @ 100 KHz, 0.1 Vrms Pri. 1.2 1.0 25 0.9 TX Sec. 1.3 Pri. 0.9 DCR ( Max.) RX Sec. 1.3 Turns Ratio ( 3%) TX Pri.:Sec. 1CT : 2 RX Pri.:Sec. 1:2 CT
Schematic
TX1
40 Sec. 39 38
RX1
37
TX2
36 35 34 33
RX2
32
TX3
31 30 29 28
RX3
27
TX4
26 25 24 23
RX4
22 21
Pri. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Package
A J Pin 1 I.D. N
Dim. PCA EPA3557S Date Code Min. 1.110 .470 .250 --.010 --.590 .016 .008 --0 .025 --------40 21 Solder Pad Layout Q 1 20 A B C D E F G H I J K L M N P Q
Dimensions
(Inches) Max. Nom. 1.130 .490 .270 --.015 --.610 .022 .012 --8 .045 --------1.120 .480 .260 .950 .012 .050 .600 .019 .010 .085 --.035 .030 .050 .090 .670 (Millimeters) Min. Max. Nom. 28.19 11.94 6.35 --.254 --14.99 .406 .203 --0 .635 --------28.70 12.45 6.86 --.381 --15.49 .559 .305 --8 1.14 --------28.45 12.19 6.60 24.13 .305 1.27 15.24 .483 .254 2.16 --.889 .762 1.27 2.29 17.02
B
P
D E C K
M
L H F G
I
PCA ELECTRONICS, INC. 16799 SCHOENBORN ST. NORTH HILLS, CA 91343
CSA3557S
Rev. 4
2/10/99
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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