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Network LAN Transformer SMD 10/100/1000 Base-T Magnetics
product description:
On the network communication motherboard, between the PHY chip and the RJ45 connector, there will be a small black square. This thing is called a network transformer. The book name is "Data Mercury". People often call it a network isolation transformer, LAN Transformers, LAN transformers, filters, etc.
Electrical Specification @25℃
Inductance OCL:350uH Min @ 100KHz 0.1V 8mA DC BIAS
Leakage Inductance:0.50uH Max @ 100KHz 0.1V
Interwinding Capacitance:28pF Max @ 100KHz 0.1V
DC Resistance:1.22 Max (16-14,11-9)
Turn Ratio:1CT:1CT(TX)/1CT:1CT(RX)±3%
Polarity:1-16,6-11 In-Phase
Insertion Loss:0.5-100MHz -1.1dB Max
Return Loss:
0.5-30 MHz -18dB Min
30.1-60MHz -18+20log(f/30) dB Min
60.1-80MHz -12dB Min
Cross Talk:
0.5-40MHz -35dB Min
40.1-100MHz -33+20*log(f/50) dB Min
CMRR:0.5-100MHz -30dB Min
Isolation HI-POT:1500VAC 1mA 1S
Operating Temperature:0℃ to 70℃