T3/DS3/E3/STS-1 TRANSFORMERS
Eight Transformers Designed for
T3, DS3, E3 and STS-1 Interface
Eight transformers in a surface mount package
Models matched to leading transceiver ICs
Return loss meets requirements of G.703
Recognized by UL1950 (some parts pending approval)
Isolation voltage: 1500Vrms
Electrical Specifications @ 25°C
RoHS-5
RoHS-6
Turns Ratio
OCL Primary
LL
CW/W
(pF MAX)
Isolation Voltage
(Vrms MIN)
Package/
Schematic
Primary
Pins
Compliant PN# Compliant PN# (Pri:Sec 2%) @ 25°C (µH MIN)
(µH MAX)
1-2, 3-4, 5-6, 7-8
T3048
T3049
T3048NL
T3049NL
1:1
1:2
40
19
.150
.150
.150
.120
10
10
10
10
1500
1500
1500
1500
YB/1
YB/1
YB/1
YB/1
9-10, 11-12, 13-14, 15-16
1-2, 3-4, 5-6, 7-8
9-10, 11-12, 13-14, 15-16
1-2, 3-4, 5-6, 7-8
9-10, 11-12, 13-14, 15-16
TX3047*
TX3045*
TX3047NL*
TX3045NL*
1:1
100
1-2, 5-6, 9-10, 13-14 &
3-4, 7-8, 11-12, 15-16
1:1 & 1:2
100 & 40
*NOTE: Operating Temperature Range: -40°C to +85°C.
For Tape & Reel packaging, add a “T” suffix to the part number when ordering (e.g. T3048
becomes
becomes
T3048NLT).
T3048T, and T3048NL
Mechanical
Schematic
YB
32
31 30
29 28
27 26
25 24
23 22
21 20
19 18
17
16
1.000
25,40
MAX
.050
1,27
15X
1
.425
10,80
.005
0,13
±
Part Number
1
2
3
4
5
6
7
8
9
10 11
12 13
14 15
Date Code Country of Origin U.S. Pat. 5015981
.018
32X
.100
2,54
0,46
32X
.750
19,05
.780
19,81
.310
7,87
.030
0,76
32X
2 X 10°
.295
Weight . . . . . . . . . . . . . .2.7 grams
Tape & Reel . . . . . . . . . . . .200/reel
Tube . . . . . . . . . . . . . . . . . .20/tube
.280
7,11
0° 8°
.035
MAX
7,49
.465
Inches
mm
Dimensions:
11,81
4 X 3°
Unless otherwise specified,
.004/0,10
32 SURFACES
2 X 15°
.010
0,25
all tolerances are
32X
.115
2,92
.050
0,89
TYP
1,27
SUGGESTED PAD LAYOUT
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T663.B (9/06)