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 & EN60950 Standards •
• 2000 Vrms Isolation •
• See Selection Guide for I.C. Cross Reference •
Electrical Parameters @ 25° C
Part
Number
EPR1226
EPR1227
EPR1228
EPR1229
Turns
Ratio
1:1 / 1:1
1:1 / 1:2
1:2 / 1:2
1:2.5 / 1:2.5
OCL
(mH Min.)
22
22
22
22
Cw/w
(pF Max.)
100
100
100
100
LI
(µH Max.)
5
15
15
30
Pri. CD
(pf Max.)
42
160
80
150
Pri. DCR
(Ω Max.)
2.4
2.5
2.5
2.5
Sec. DCR
(Ω Max.)
2.4
4.2
4.3
5.8
Schematic
A
A
B
B
Schematic
A
Pri.
1
2
3
4
Sec.
16
15
14
13
Pri.
5
6
7
8
B
Sec.
12
11
10
9
Package
A
PCA
EPR12XX
Date Code
Pin 1
I.D.
B
Dimensions
C
E
D
G
Dim.
(Inches)
Min.
Max. Nom.
(millimeters)
Min.
Max. Nom.
A
B
C
D
E
F
G
H
.900
.540
.380
---
.110
---
.395
.024
.920
.560
.400
---
.150
---
.405
.027
.910
.550
.390
.700
.130
.100
.400
.025
22.86
13.72
9.65
---
2.79
---
10.03
.610
23.37
14.22
10.16
---
3.81
---
10.29
.686
23.11
13.97
9.91
17.78
3.30
2.54
10.16
.635
H
F
PCA ELECTRONICS, INC.
16799 SCHOENBORN ST.
NORTH HILLS, CA 91343
CSR1226 - CSR1229
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. ]
