LITTELFUSE SP3050

Silicon Protection Arrays
Application Guide
1000/Gigabit Ethernet
Considerations:
● 1000 relates to the data rate in Mbps (i.e. 1000Mbps)
→ For 1000Base-T data is transmitted over 4 UTP (unshielded twisted pairs) using a 125MHz clock
● For this data rate the parasitic capacitance should certainly be taken into account
● The 8 data lines below (Tx0:3 and Rx0:3) are being protected against lightning transients by a two stage protection
scheme
→ The SP03 series (x4) should be used in place of the SPLV2.8-4 if higher levels of protection are required
→ The SP4060 series can be used in place of the SP3050 devices if the voltage does not exceed 2.5V
Application Schematic:
RJ-45
Connector
*Package is shown as transparent
SP3050 (x2)
J1
NC
Outside
World
NC
Ethernet
PHY
SPLV2.8 (x2)
J8
Case GND
Case GND
Recommended SPA Devices:
SPLV2.8-4BTG
ESD Level
(Contact)
±30kV
Lightning
(tP=8/20μs)
24A
I/O
Capacitance
4pF
# of
Channels
4
SP3050-04HTG
±20kV
10A
2.4pF
SP4060-08ATG
±30kV
20A
4.4pF
Ordering Number
©2009 Littelfuse, Inc
VRWM
Packaging
2.8V
SOIC-8
4
6V
SOT23-6
8
2.5V
MSOP-8
11