89
- Using Ferrite EP cores these transformers are capable of
handling 2.5mA to 5mA DC unbalanced. They are good for
coupling and for RF telecommunication equipment.
ELECTRICAL SPECIFICATION AT 25°C
Part
Number
Pri
Z
(
Ω
)
Sec
Z
(
Ω
)
Lp min @
Max
Unbalance 1 KHz 1 V
( mH )
( DC mA )
Insertion
Loss @
1 KHz
( db )
Max
1.0
1.0
1.0
1.0
0.8
0.8
0.8
0.8
Frequency
Longitudinal
Return
Break-down
Response
balance min loss ( db ) voltage ( VRMS )
( db )
( db )
ERL min
Pri to Sec
300 Hz to 3500 Hz
COUPLING TRANSFORMER
SERIES EP
Size
EP13-0191 600
EP13-0192 900
EP17-0181 600
EP17-0182 900
EP20-0171
EP20-0172
EP20-0173
EP20-0174
600
600/SPLIT
600
900/SPLIT
600
900
600
900
600
600
900
600
NA
NA
2.5
2.5
5
5
5
4
750
1000
750
1000
750
750
750
1250
±0.25
±0.25
±0.25
±0.25
±0.25
±0.25
±0.25
±0.25
60
60
60
60
60
60
60
60
26
26
22
22
26
26
26
26
1000 Volts
1000 Volts
1000 Volts
1000 Volts
1500
1500
1500
1500
Volts
Volts
Volts
Volts
1
1
2
2
3
3
3
3
NOTE:
In the configuration of split primary, pins 1 and 4 for primary 1, and pins 2 and 5 for primary 2.
SCHEMATIC
FOR EP20
Spacing
between
2 windings
nominal
D
10.16
15.24
17.78 ±0.13
Lead
length
nominal
E
Lead
spacing
nominal
F
2
7
1
FOR EP13 & 17
5
DIMENSIONS IN MILLIMETERS
Size
Width
Max
A
Length
Max
B
Height
Max
C
4
1
2
3
13.85
20.10
22.10
13.85
20.10
25.50
13.20
15.50
20.35
4.7
5.0
6.35
2.54
5.08
5.08
1
9
4
7
8
SPLIT PRIMARY
4
2
5
9
NOTE
EP 13 & 17 are also available with 8 terminal bobbins, instead of 10 as per drawing.
In this case, primary will be pins 1 and 4, and secondary will be pins 5 and 8.
B
O
1
O
2
O
3
O
4
O
5
C
A
10
O
9
O
8
O
7
O
6
O
E
F
D
BOTTOM VIEW
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