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EPU - U Interface Transformer
We offer a cost effective range of U Interface transformers for 2B1Q and 4B3T applications for equipment transmission between customer premises and exchanges. The transformers meet all requirements of recognized U Interface IC´s and ANSI standard T1.601 with a highly reliable pulse shape and return loss performance.
Features
- compatibility with common transceiver lC´s ensures maximum loop length
- complies with ANSI standard T1.601 when used with recommended chip
- 1,500V minimum isolation
- all materials approved to UL94V-0
- excellent quality at competitive price due to high volume production
- manufactured in ISO-9001 approved facility
- operating temperature: -40°C to +85°C
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Electrical Specifications @ 25°C |
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Turns Ratio: Bold = IC Side Windings |
EPU Series - U Interface Transformers
Part Number |
LO
±8%
mH |
Turns Ratio
±2%
Line : IC |
IDC
mA |
DCR
Line
Ohms Nom. |
DCR
IC
Ohms Nom. |
LL
Line Side
µH Max. |
CC
pF Nom. |
VP
(Vrms) |
Schematic |
EPU-100A
EPU-100B |
16.0
16.0 |
1.65:1
1.65:1 |
60
60 |
8.4
8.4 |
5.2
5.2 |
80
80 |
45
45 |
1,500
1,500 |
A
B |
EPU-110B |
14.5 |
1.25:1 |
60 |
8.2 |
6.7 |
70 |
50 |
1,500 |
B |
EPU-120A
EPU-120B |
7.9
7.9 |
1.32:1
1.32:1 |
60
60 |
5.3
5.3 |
4.1
4.1 |
60
60 |
45
45 |
1,500
1,500 |
A
B |
EPU-200A |
6.15 |
1.6:1 |
60 |
3.6 |
2.3 |
40 |
40 |
1,500 |
A |
EPU-300B
EPU-300D |
28.0
28.0 |
1.25:1
1.25:1 |
60
60 |
19.5
19.5 |
16.0
16.0 |
150
150 |
60
60 |
1,500
1,500 |
B
D |
EPU-400B
EPU-400C |
16.0
16.0 |
2:1
2:1 |
60
60 |
8.4
8.4 |
4.3
4.3 |
80
80 |
50
50 |
1,500
1,500 |
B
C |
IC - U Interface Cross Reference |
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Dimensions & Schematic
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IC
Manufacturer
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IC
Part Nubmer
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Talema
Part Number
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Infineon |
PEB 8091 / 8191 |
EPU-100B |
PEB 24902 / 24911 |
EPU-100B |
PSB 21910 / 21911 |
EPU-100B |
PEB 2491 (2B1Q) |
EPU-110B |
PEB 20901 |
EPU-120A |
PEB 2090 (4B3T) |
EPU-120B |
PEB 2091 (2B1Q) |
EPU-100A |
Motorola |
MC145572 (2B1Q) |
EPU-300B |
EPU-300D |
Mietec |
MTC20278 IL TQ (2B1Q) |
EPU-400B |
MTC20279 IL TQ (4B3T) |
EPU-200A |
MTC20276 |
EPU-400C |
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