6
4
1
3
2
Turns Ratio OCL Pri @ 25°C LLCWW DCR Pri DCR SecPart
(Pri:Sec - ±2%) (mH MIN) (µH MIN) (pF MAX) (MAX) (MAX)Number
TX1281 1CT:1 2.0 1.2 65 2.7 2.7
TX1282 1.14CT:1 2.2 1.4 65 2.8 2.8
TX1283 1.35CT:1 2.0 1.4 65 2.7 2.0
TX1284 1.26CT:1 1.2 1.0 50 2.5 2.0
TX1491 1CT:1 1.2 1.2 35 2.7 2.7
TX1492 2CT:1 2.15 1.2 65 2.3 1.2
T1/E1/CEPT/ISDN-PRI
SMT TRANSFORMERS
Mechanical
Small surface mount package
Isolation voltage: 1500 Vrms minimum
Extended temperature range: -40°C to +85°C
Designed to meet Return Loss requirements of ITU G.703
Schematic
.025
0,64
6 X
0°  8°
6 X
.005/0,13
6 SURFACES
.200
5,08
.006
0,15
SUGGESTED PAD LAYOUT
.073
1,85
.146
3,71
.044
1,12
6 X
.245
6,22
.345
8,76
+.000
- .010
+0,00
- 0,25
.146
3,71
.073
1,85
TX12XX
TX149X
Date Code
Country of Mfg.
.220
5,59
.305 ± .010
7,75 ± 0,25
.230
5,84
.024
0,61
6 X
TX12XX/TX149X
T669.B (8/04)
For More Information :
Performance warranty of products offered on this data sheet is limited to the parameters specified. Data is subject to change without notice. Other brand and product
names mentioned herein may be trademarks or registered trademarks of their respective owners.
©2004, Pulse Engineering, Inc. All Rigths Reserved.
Electrical Specifications @ 25°C — Operating Temperature -40°C to 85°C
Weight . . . . . . . . . . . . . .0.38 grams
Tape & Reel . . . . . . . . . . .1000/reel
Tray . . . . . . . . . . . . . . . . . . .80/tray
Dimensions: Inches
mm
Unless otherwise specified,
all tolerances are ± .010
0,25
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