Features
Designed for Broadcom BCM5226/5228, Level One LXT9784/9785 and
Kendin KS8995/8995E chipsets
Low profile (5.8mm) and light weight (4.5 g) 10/100Base-T Quad Port
isolation transformer modules designed for Auto MDI/MDIX applications
SMD packages facilitate pick and place compatability and speed of
placement while providing consistant and reliable coplanarity
Modules meet requirements of IEEE 802.3u and ANSI X3.263
Manufactured in ISO-9001 approved Talema facility
Electrical Specifications
Ratings@ 25C ambient
Inductance: 350H minimum @ 100kHz, 100mV, 8mA bias
Leakage Inductance: 0.4H @ 1MHz
Minimum Isolation Voltage: 1500 Vrms
Quad Port Auto MDI/MDIX 10/100Base-T Transformer Isolation Modules
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Applications
Talema 10/100BaseT Quad 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
D
imensions: 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)
Schematics
M
TX RX TX RX 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
N
TX RX RX TX TX RX 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
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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