THE TALEMA GROUP World Wide Toroidal Specialists
Features
Low profile (5.8mm) and light weight (4.0 g) 10/100Base-T Dual Port
isolation transformer modules facilitate pick and place compatability and
speed of placement
SMD package for high density board placement
Dual port modules meet requirements of IEEE 802.3u and ANSI X3.263
Consistent and reliable coplanarity
Excellent quality at extremely competitive price due to high volume
production
Manufactured in ISO-9001 approved Talema facility
Electrical Specifications
Ratings@ 25C ambient
Inductance: 350H minimum @ 100kHz, 100mV, 8mA
Leakage Inductance: 0.4H @ 1MHz
C
W/W
: 20pF Typical
Minimum Isolation Voltage: 1500 Vrms
Dual Port SMD 10/100Base-T Isolation Transformer Modules
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Applications
Talema 10/100BaseT Dual transformer modules contain transmit and receive isolation transformers to maintain consistant wave shape and suppression of common
mode noise while providing equipment isolation per IEEE 802.3. High impedance common mode quad chokes for additional EMI suppression have been added on
some models as required for FCC and CISPR 22 Class B certification.
Quality and consistency is guaranteed through 100% testing of the specified parameters for primary inductance, leakage inductance, turns ratio, DC resistance and
interwinding capacitance.This ensures that the return loss and pulse wave shape requirements can be fully maintained. Additionally, all parts are tested for 1500V
minimum isolation.
Operating Temperature: 0 to +70C
Storage Temperature: -25C to +105C
Standard packing: Tape and reel
Dimensions
Dimensions: Inches (Millimeters)
Tolerance: 0.010 (0.25) unless specified otherwise
Surface coplanarity will be <0.004 (0.10)
Suggested Pad Layout
0 - 8
0.950
(24,13)
0.030
(0,77)
0.091
(2,30)
19 x 0.050
(19 x 1,27)
0.480
(12,20)
0.661
(16,80)
1.102
(28.00)
0.638
(16.20)
0.076
(1.93)
0.575
(14.60)
19 x 0.05
(1,27)
TALEMA IN
WK/YR
Part Number
0.236
(6.00)
0.189
(4.80)
0.020 x 0.012
(0.50 x 0.30)
Talema Electronic 101 West 10th Street Rolla, MO (573) 364-2422 Fax: (573) 364-5390
www.talema.com Email: sales@talema.com
THE TALEMA GROUP World Wide Toroidal Specialists
Schematics SMD Dual Port 10/100Base-T Isolation Transformer Modules
A
TX
RX TX RX
40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
B
RX
TX RX TX
40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
C
TX
RX TX RX
40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
E
TX
RX TX RX
40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
G
RX
TX
RX TX
40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
RX
TX
RX TX
40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
H
Talema Electronic 101 West 10th Street Rolla, MO (573) 364-2422 Fax: (573) 364-5390
www.talema.com Email: sales@talema.com
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