Specification	S558-5999-T7-F

Height - Seated (Max)	0.225 in
Inductance	350 µH
Mounting Type	Surface Mount
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Size / Dimension Length	0.485 in
Size / Dimension Width	0.285 in
Transformer Type	LAN 10/100 Base-T
Turns Ratio - Primary (Receiver)	1 CT
Turns Ratio - Primary (Transmitter)	1 CT
Turns Ratio - Secondary (Receiver)	1
Turns Ratio - Secondary (Transmitter)	1 CT
Turns Ratio Mode	Receiver, Transmitter

X558-LA Series

Audio Transformers / Signal Transformers Transformer

Part	Transformer Type	Operating Temperature (Min)	Operating Temperature (Max)	Inductance	Height - Seated (Max)	Size / Dimension Width	Size / Dimension Length	Mounting Type	Turns Ratio - Primary (Receiver)	Turns Ratio Mode	Turns Ratio - Secondary (Receiver)	Turns Ratio - Secondary (Transmitter)	Turns Ratio - Primary (Transmitter)
Bel Fuse Inc. S558-5999-T7-F	LAN 10/100 Base-T	-40 °C	85 °C	350 µH	0.225 in	0.285 in	0.485 in	Surface Mount	1 CT	Receiver Transmitter	1	1 CT	1 CT
Bel Fuse Inc. S558-5999-M8-F	LAN	0 °C	70 °C	350 µH	0.23 in	0.48 in	0.69 in	Surface Mount	1 CT	Receiver Transmitter	1	1 CT	1 CT
Bel Fuse Inc. S558-5500-16-F		0 °C	70 °C	350 µH	0.25 in	0.6 in	0.522 in	Surface Mount	1 CT	Receiver Transmitter	1	1 CT	1 CT

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