Transformers for T1 / CEPT / PCM Applications
Available in both Thru-hole & SMD EP7 Packages
Schematic "A"
PRI. SEC.
Schematic "B"
Schematic "C"
PRI. SEC.
Schematic "D"
PRI. SEC.
2
75 Ω
5
1
1
2
3
6
1
2
3
6
5
4
1
2
3
6
5
4
100 Ω
6
3
4
4
120 Ω
ElectricalSpecifications at25OC
Part
InsertionLoss
max. @ 772 kHz
( dB )
Frequency
Response
( dB )
ReturnLoss Longitudinal
Primary Secondary
Style&
Schem.
Impedance
Number
(Hi-Pot)
min.
Balancemin. DCRmax. DCRmax.
( Ω )
( dB )
( dB )
(Ω)
( Ω )
T-13800
( 1200 VRMS
100 / 100
0.2
@ 772 kHz
+ 0.10
100 kHz to 1.544 MHz
25 *
15**
20***
35
1.0
1.0
EP7 - A
EP7 - B
EP7 - C
)
@ 1.544 MHz
T-13801
( 1500 VDC)
100 / 100 / 100
0.075
+ 0.25
35
0.6
0.6
@ 772 kHz 100 kHz to 1.544** MHz
@ 1.544 MHz
T-13802
75-100-120 / 75
0.25
+ 0.15
40
1.55
1.15
(1650 VDC)
@ 772 kHz
100 kHz to 1.544 MHz
@ 1.0 MHz
*
100 kHz to 1.544 MHz 100 Ω
** 100 kHz to 4.0 MHz 100 Ω
*** 50 kHz to 3.0 MHz 75 Ω Secondary 75 Ω,
100 Ω or 120 Ω Primary
Surface Mount Versions of all Parts listed are available.
Add suffix "G" to specify surface mount package style.
ElectricalSpecifications1,2,3 at25OC
Turns
Ratio
( + 5 % )
OCL
min.
(mH)
PRI-SEC
Leakage
Ind.max.
(µH)
Primary
DCRmax.
(Ω)
Secondary
DCRmax.
( Ω )
Part
Number
Style &
Schem.
Primary
Pins
C
W/W max.
( pF )
T-13803
T-13804
T-13805
1CT : 1
1CT : 0.86
2CT : 1
1.2
1.5
1.2
35
35
50
1.0
1.0
1.0
0.9
0.65
1.1
0.9
1.4
0.7
EP7 - D
EP7 - D
EP7 - D
1-3
1-3
1-3
1. 1000 VRMS minimum Isolation.
2. ET-Product of 10 V-msec min.
.370
(9.40)
MAX.
.375
(9.53)
MAX.
3. OCL Measured at Primary @100KHz & 20mV
.375
(9.53)
MAX.
.465
(11.81)
MAX.
"G"
SMD
Package
.375
(9.53)
MAX.
.025
(0.64)
.394
(10.00)
MAX.
.340
(8.64)
.098
.028
.505 (12.83)
.490 (12.45)
(2.50) (0.70)
.525
(13.34)
.110
(2.79)
MIN.
Part Number Examples:
.080
(2.03)
.100
(2.54)
TYP.
6
1
2
3
T-13800
T-13800G
T-13803
(EP7 Thru-hole)
(EP7 SMD)
(EP7 Thru-hole)
(EP7 SMD)
.098
.024
(2.49)
(0.61)
Suggested
Pad Layout
.039
(0.99)
5
4
.050
(1.27)
TYP.
1
2
3
T-13803G
Bottom
View
.075
(1.905)
TYP.
6
5
4
For other values & Custom Designs, contact factory.
Specifications subject to change without notice.
T1-BOBIN-4/99
15801ChemicalLane,Huntington Beach,CA 92649-1595
Rhombus
Industries Inc.
10
•
Tel: (714) 898-0960 Fax: (714) 896-0971