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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
   EPU - U Interface Transformer
 
Electrical Specifications @ 25°C   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   Dimensions & Schematic
Dimensions & Schematic - Pins
IC
Manufacturer
 IC
Part Nubmer
 Talema
Part Number
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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