ISDN U Interface Transformers
ELECTRONICS INC.
• Optimizied for Leading Transceiver I.C.’s •
• Meets or exceeds UL1459 & UL1950 Standards •
• 2500 Vrms Isolation •
• See Selection Guide for I.C. Cross Reference •
Electrical Parameters @ 25° C
Part
Number
EPR1101
EPR1107
EPR1109
EPR1120
Turns
Ratio
1.32:1
1.65:1
1.6:1
1.32:1
OCL
(mH Min.)
7-8.3
13-18
8.4-12.6
7-8.3
IDC
(mA Max.)
55
50
50
50
Pri. DCR
(Ω Max.)
2.4
6.0
7.2
2.4
Sec. DCR
(Ω Max.)
2.7
3.5
3.0
2.7
Line Side
Pins
1, 4
1, 4
1, 4
1, 4
Schematic
A
B
C
A
Schematic
A
5
8
5
B
6
7
7
C
5
6
1
2
3
4
1
2
3
4
1
2
3
4
Package
D
8
5
Marking :
PCA
EPR11XX
D.C.
Pin 1
I.D.
1
4
B
Dimensions
A
Dim.
(Inches)
Min.
Max. Nom.
(millimeters)
Min.
Max. Nom.
C
E
H
F
G
I
A
B
C
D
E
F
G
H
I
---
---
---
.590
.120
---
.840
---
---
.750
1.110
.430
.610
.180
---
.860
---
---
---
---
---
.600
.150
.150
.850
.020
.010
---
---
---
14.97
3.05
---
21.34
---
---
19.05
---
28.19
---
10.92
---
15.49 15.24
4.57 3.81
---
3.81
21.84 21.59
---
.508
---
.254
PCA ELECTRONICS, INC.
16799 SCHOENBORN ST.
NORTH HILLS, CA 91343
CSR1101,7,9,20
Rev. -
3/30/99
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. ]
