Mechanicals Schematics
T3020
(DATE CODE)
(COUNTRY OF ORIGIN)
.505 MAX
12,83
.350
8,89
.245 MAX
6,22
.050
1,27
.375 MAX
9,53
.280MAX
7,11
.004/0,10
16 SURFACES
16X .018 ± .002
0,46 ± 0,05
.050
1,27
.350
8,89
.328
8,33
SUGGESTED PAD LAYOUT
16X .029 ± .001
0,74 ± 0,03
.075
1,91
0°– 8°
.010
0,25
16 14
132
11 9
68
1
16 15
12
11 9
78
3
10
16 15
127
11 9
68
2
10
16 14
132
11 9
4
687
Dimensions: Inches
mm
Unless otherwise specified, all tolerances are ± .010
0,25
Turns OCL Primary OCL Primary LLCW/W Isolation Primary
Part Ratio @ 25°C @ -40°C (µH MAX) (pF MAX) Voltage Package/ Pins
Number (±2%) (µH MIN) (µH MIN) (Vrms MIN) Schematic
TX RX TX RX TX RX TX RX TX RX TX RX
T3020 1:2CT 1:1 40 100 19 40 .120 .120 10 10 1500 BH/1 16-14 6-8
T3021 1:2CT 1:2CT 40 40 19 19 .100 .100 10 10 1500 BH/4 16-14 11-9
TX3025 1CT:1CT 1:1 100 100 40 40 .120 .120 10 10 1500 BH/2 6-8 16-15
TX3026 1:2CT 1:1 100 100 40 40 .120 .120 10 10 1500 BH/3 7-8 16-15
NOTE: Optional Tape & Reel packaging can be ordered by adding a “T” suffix to the part number (ex: T3020T).
T3/DS3/E3/STS-1 TRANSFORMERS
Dual SMT, Extended Temperature Range
Electrical Specifications @ 25°C — Operating Temperature -40°C to +85°C
Dual SMT package contains both transmit and
receive transformers
Operating temperature of -40°C to +85°C
Models matched to leading transceiver ICs
Return loss meets requirements of G.703
1500 Vrms isolation per UL1459 and UL1950
BH
T655.A (6/03)
Weight . . . . . . . . . . . . . .1.0 grams
Tape & Reel . . . . . . . . . . . .600/reel
Tube . . . . . . . . . . . . . . . . . .40/tube
US 858 674 8100
••
UK 44 1483 401 700
••
France 33 3 84 35 04 04
••
Singapore 65 6287 8998
••
Taiwan 886 2 2698 0228
••
Hong Kong 852 2788 6588
••
http://www.pulseeng.com
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.
For More Information :
Printed on recycled paper. ©2003, Pulse Engineering, Inc. T655.A (6/03)
Application Notes
1. The transformers have been developed for use as trans-
mit and receive transformers in T3 or DS3 links, using
bit rates of 44.736 Mbps and B3ZS coding on coaxial
cable. The characteristics allow compliance with the
pulse templates of CCITT G.703 as well as ATT T.A.34.
The transformers are also suitable for the E3 interface at
34.368 Mbps with HDB3 coding or STS-1 applications,
at 51.84 Mbps according to Bellcore TA-NWT-000253.
2. Bandwidth specifications are typical in a 75 Ωsystem.
Return loss meets the requirements of G.703. Materials
used in the products are UL94-V0 recognized. Products
meet the requirements of IEC 695-2-2 (Needle Flame
Test).
3. For those applications requiring a 1:1 turns ratio on the
transmit side, use only one half of the secondary (2CT)
winding.
4. Optional Tape & Reel packaging can be ordered by
adding a “T” suffix to the part number (i.e. TX3026T).
5. For other T3/DS3/E3/STS-1 Transformers, please see
data sheets T606, T619, T672, T663 and T668.
6. Transformer Selection Guide - Please contact Pulse
Applications Engineering or see our website for the
latest Pulse Transformer Selection Guide.
T3/DS3/E3/STS-1 TRANSFORMERS
Dual SMT, Extended Temperature Range
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
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
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
SINGAPORE
(Southern Asia)
150 Kampong Ampat
#07-01/02
KA Centre
Singapore 368324
TEL: 65 6287 8998
FAX: 65 6280 0080
HONG KONG
(China/Hong Kong)
9/F, Phase 2, Tai Sang
Shatin Warehouse Centre
6 Wong Chuk Yeung Street
Fotan, Shatin, Hong Kong
TEL: 852 2788 6588
FAX: 852 2776 1055
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