ISDN-S Interface Transformers
ELECTRONICS INC.
• Optimizied for Leading Transceiver I.C.’s •
• Meets CCITT 1.430 Four Wire “S” Interface •
• Meets or exceeds UL1459 & UL1950 Standards •
• 2000 Vrms Isolation •
• See Selection Guide for I.C. Cross Reference •
Electrical Parameters @ 25° C
Part
Number
EPR1201
EPR1202
EPR1203
EPR1204
Turns
Ratio
1CT:1CT
1CT:2CT
1CT:1.8CT
1CT:2.5CT
OCL
(mH Min.)
22
22
22
22
Cw/w
(pF Max.)
110
100
100
100
LI
(µH Max.)
5.0
8.0
8.0
12
Pri. DCR
(Ω Max.)
2.5
2.5
2.5
2.5
Sec. DCR
(Ω Max.)
2.5
5.0
4.5
6.0
Package &
Schematic
A
A
B
B
Schematic
A
1
2
3
6
1
5
2
4
3
5
4
6
B
7
Package A
A
1
6
5
4
Package B
A
1
PCA
EPR12XX
D.C.
2
3
B
PCA
EPR12XX
D.C.
2
3
7
6
5
4
B
Dimensions
C
K
G
H
J
D
F
J
E
C
K
G
H
F
J
D
E
Dim.
(Inches)
Min.
Max. Nom.
(millimeters)
Min.
Max. Nom.
A
B
C
D
E
F
G
H
J
K
.540
.540
.380
---
.025
---
.395
.017
---
.115
.560
.560
.400
---
.035
---
.405
.023
---
.125
.550
.550
.390
.400
.030
.100
.400
.020
.200
.120
13.72
13.72
9.65
---
.635
---
10.03
.432
---
2.92
14.22
14.22
10.16
---
.889
---
10.29
.584
---
3.18
13.97
13.97
9.91
10.16
.762
2.54
10.16
.508
5.08
3.05
PCA ELECTRONICS, INC.
16799 SCHOENBORN ST.
NORTH HILLS, CA 91343
CSR1201 - CSR1204
Rev. -
3/12/99
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
PCA [ PCA ELECTRONICS INC. ]
