TURNS RATIO: 2CS:1CT, HEIGHT DIM INCLUDES TERMINAL ALSO, COMPATIBLE WITH CONEXANT BT8921; BT8970
high
12.32 mm
length
13.46 mm
Manufacturer's serial number
B1028
Installation features
SURFACE MOUNT
Maximum operating temperature
85 °C
Minimum operating temperature
-40 °C
method of packing
TAPE & REEL
physical size
L13.46XB13.11XH12.32 (mm)
surface mount
YES
Transformer type
TELECOM TRANSFORMER
width
13.11 mm
B1028T Preview
HDSL LINE TRANSFORMERS
For use with Conexant chipsets
Excellent THD performance
Small footprint
Designed to meet UL 1950 supplementary insulation
requirements for working voltage up to 250 Vrms
Electrical Specifications @ 25°C — Operating Temperature -40°C to +85°C
Part
Number
B1017
B1059
1
B1018
B1028
1
B1020A
B1040A
1
B1075
B1077
1
Mount.
THT
SMT
THT
SMT
THT
SMT
THT
SMT
Matched to
Conexant's
Chipset No.
BT8921/BT8970
BT8921/BT8970
BT8921/BT8970
BT8921/BT8970
RS8973
RS8973
RS8973
RS8973
Application
784 Kpbs
784 Kpbs
1168 Kpbs
1168 Kpbs
272 to 2320 Kpbs
272 to 2320 Kpbs
272 to 2320 Kpbs
272 to 2320 Kpbs
Turns Ratio Inductance - Line Side Leakage Inductance - Line Side
Line - Chip
@ 10 kHz, 100 mV
@100 kHz
(±2%)
(1-5) with (2-4) shorted (1-5) with (2-4) and (7-9) shorted
3.0 mH ±6%
15 µH MAX @ 0.02 Vrms
2CS:1
3.0 mH ±10%
15 µH MAX @ 0.02 Vrms
2CS:1
2.0 mH ±10%
13 µH MAX @ 0.10 Vrms
2CS:1CT
2.0 mH ±6%
11 µH MAX @ 0.10 Vrms
2CS:1CT
2.0 mH ±6%
6.5 µH MAX @ 0.02 Vrms
2CS:1
2.0 mH ±10%
6.5 µH MAX @ 0.02 Vrms
2CS:1
2.0 mH ±6%
8 µH MAX @ 0.02 Vrms
2CS:1CT
2.0 mH ±8%
8 µH MAX @ 0.02 Vrms
2CS:1CT
DC Resistance
Line Side
Chip Side
(1-4) = (2-5)
(7-9)
1.25
1.00
1.25
1.00
1.25
1.00
1.20
1.00
2.00
1.10
1.60
1.05
2.00
0.70
2.00
0.70
W
W
W
W
W
W
W
W
£
£
£
£
£
£
£
£
W
W
W
W
W
W
W
W
£
£
£
£
£
£
£
£
Additional Electrical Specifications
W
W
W
W
W
W
W
W
W
1
2
Transformers are shipped in trays unless Tape & Reel packaging is specified by adding the suffix
“T”
to the part number (i.e. B1028T)
DCR on the chip side of part numbers B1075 and B10778 is given for (7-8) = (8-9)
Mechanicals
B10XX
(THT)
Date Code
Country of Mfg.
B10XX
(SMT)
B10XX
Weight
. . . . .6.2 grams
Tray
. . . . . . . . .60/tray
10 X .028
± .002
0,71
± 0,05
.695
17,65 MAX
.394
10,00
MAX
.605
15,37
.100
2,54
.394
10,00
10 X .051
± .002
1,30
± 0,05
.098
2,50
.530
13,46
MAX
Date Code
Country of Mfg.
B10XX
.098
2,50
.500
12,70MAX
.516
13,11MAX
.485
12,32
MAX
10 X
.018
0,46
.173 ± .015
4,39 ± 0,38
.394
10,00
.550
13,97MAX
.098
2,50
.394
10,00
.547
13,89MAX
10 X 0° 8°
For More Information :
UNITED STATES
(Worldwide)
12220 World Trade Drive
San Diego, CA 92128
U.S.A.
http://www.pulseeng.com
TEL: 858 674 8100
FAX: 858 674 8262
Dimensions:
Inches
mm
B1018, B1028, B1075 & B1077
1
9
.004 MIN
0,10
4
8
Chip
Line
.005/0,13
2
.031
± .006
10 SURFACES
10 X
0,79
± 0,15
7
5
2:1
Unless otherwise specified, all tolerances are ± .010
0,25
UNITED KINGDOM
(Northern Europe)
1 & 2 Huxley Road
The Surrey Research Park
Guildford, Surrey GU2 5RE
United Kingdom
TEL: 44 1483 401700
FAX: 44 1483 401701
FRANCE
(Southern Europe)
Zone Industrielle
F-39270
Orgelet
France
TEL: 33 3 84 35 04 04
FAX: 33 3 84 25 46 41
SINGAPORE
(Southern Asia)
150 Kampong Ampat
#07-01/02
KA Centre
Singapore 368324
TEL: 65 287 8998
FAX: 65 280 0080
TAIWAN, R.O.C.
(Northern Asia)
3F-4, No. 81, Sec. 1
HsinTai Wu Road
Hsi-Chih, Taipei Hsien
Taiwan, R.O.C.
Tel: 886 2 2698 0228
FAX: 886 2 2698 0948
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.
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