ELECTRONICS INC.
T1/CEPT/ISDN-PRI
Interface Transformers
• Optimizied for Leading Transceiver I.C.’s •
• Meets or exceeds UL1459, UL1950 & EN60950 Standards •
• 1500 Vrms Isolation •
• See Selection Guide for I.C. Cross Reference •
Electrical Parameters @ 25° C
Part
Number
EPR1026
EPR1027
EPR1028
EPR1029
EPR1030
EPR1031
EPR1032
EPR1033
EPR1034*
Turns
Ratio
1:2CT/1:2CT
1:2CT/1:1.36
1:2CT/1:2CT
1:2CT/1:1
1:1.26/1:2CT
1:1.15CT/1:2CT
1:1CT/2CT:1
1:4CT/1:4CT
1CT:1CT/1CT:3CT
OCL
(mH Min.)
1.2 / 1.2
1.2 / 1.2
2.0 / 2.0
1.2 / 1.2
1.5 / 1.2
1.5 / 1.2
0.8 / 0.8
0.5 / 0.5
1.2 / 0.6
Cw/w
(pF Max.)
35 / 35
35 / 35
50 / 50
30 / 30
40 / 40
35 / 40
30 / 30
40 / 40
40 / 40
LI
(µH Max.)
0.5 / 0.5
0.5 / 0.5
0.6 / 0.6
0.5 / 0.5
0.5 / 0.4
0.5 / 0.4
0.6 / 0.6
0.5 / 0.5
0.8 / 0.8
Pri. DCR
(Ω Max.)
0.7 / 0.7
0.8 / 0.8
1.0 / 1.0
0.7 / 0.7
0.7 / 0.7
0.7 / 0.7
0.5 / 0.5
0.7 / 0.7
1.0 / 0.8
Sec. DCR
(Ω Max.)
1.2 / 1.2
1.2 / 1.0
2.0 / 2.0
1.2 / 0.7
0.9 / 1.3
0.9 / 1.3
0.5 / 0.2
1.5 / 1.5
1.0 / 2.0
Primary
Pins
14,12 / 5,7
14,12 / 5,7
14,12 /10,8
1,3 / 5,7
14,12 / 5,7
14,12 / 5,7
14,12 / 5,7
1,3 / 5,7
1,3 / 4, 6 / 7, 8
Schematic
A
B
C
D
A
A
C
C
E
Schematic
A
14
12
10
9
8
14
12
B
10
8
14
12
C
10
8
14
13
D
12
10
8
16
15
14
E
11
10
9
1
2
3
5
7
1
2
3
5
7
1
2
3
5
6
7
1
2
3
5
7
1
2
3
4
5
6
7
8
L*
A
Package
Dim.
Dimensions
(Inches)
Min.
Max. Nom.
(Millimeters)
Min.
Max. Nom.
Pin 1
I.D.
PCA
EPRXXXX
Date Code
B
E
C
J
I
F
D
K*
= * 16 Pin
H
G
A
B
C
D
E
F
G
H
I
J
K
L
.780
.365
.230
---
.013
---
.290
.017
---
.110
.880
---
.800
.385
.250
---
.017
---
.310
.023
---
.140
.900
---
.790
.375
.240
.600
.015
.100
.300
.020
.200
.125
.890
.700
19.81 20.32 20.07
9.27 9.78 9.52
5.84 6.35 6.10
---
--- 15.24
.330 .432 .381
---
---
2.54
7.37 7.87 7.62
.432 .584 .508
---
---
5.08
2.79 3.57 3.17
22.35 22.86 22.61
---
--- 17.78
*16 Pin Dimensions
PCA ELECTRONICS, INC.
16799 SCHOENBORN ST.
NORTH HILLS, CA 91343
CSR1026 - CSR1034
Rev. 1
8/15/01
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. ]
