Bothhand USA.
e-mail: sales@bothhandusa.com http://www.bothhandusa.com
40PIN SMD ETHERNET 10/100 BASE TX TWO PORT TRANSFORMER
P/N: 40ST1021B DATA SHEET
Feature
40-PIN SMD Package designed to meet IEEE 802.3
& IR requirement .
Operating Temperature range: 0°C to +70°C.
Storage temperature range: -25°C to +125°C.
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Electrical Specifications @ 25°C
Part
Number
40ST1021B
Turns Ratio
(±3%)
TX
1CT:1
RX
1CT:1CT
OCL (uH Min)
@ 100KHz/0.1Vrms
with 8mA/DC Bias
350
C
W/W
(pF Max)
28
Continue
Part
Number
40ST1021B
Insertion Loss
(dB Max)
Return Loss
(dB Min)
Cross talk
(dB Min)
30MHz
-40/-37
DCMR
(dB Min) TX/RX
60MHz
-33/-28
200MHz
-25/-25
L.L
(uH Max)
0.4
Rise Time
(n s Typ)
2.5
Insulation
Resistance
(MΩ)
HI-POT
(Vrms)
1500
10,000
0.3-100 MHz 0.3-30MHz 30-60MHz 60-80MHz 0.3-60MHz 60-100MHz
-1.15
-16
-12
-12
-40
-35
Schematic
Mechanical
462 Boston St - Topsfield, MA 01983 - Phone: 978-887-8050 - Fax: 978-887-5434
A3(02/11)