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Surge and ESD Protection for
Safeguarding Gigabit Ethernet
Gigabit Ethernet transceivers, built on advanced semiconductor process nodes, are more
sensitive to electrical transient events than ever before. Today’s advanced PHYs require
state of the art TVS protection arrays that can absorb the expected transient energy, clamp
the incoming surge to a safe level, and present suciently low junction capacitance to be
electrically transparent to the system under normal operation.
Semtech has pioneered and led the way in transient protection for high speed data lines.
Semtech oers leading edge protection technology to achieve best in class protection on
Gigabit Ethernet lines.
PROTECTION PRODUCT BRIEF
Gigabit Ethernet
RClamp
®
3374N
KEY FEATURES
• 3.3V low operating voltage
• Protects 4 lines
• ±30kV air discharge/ ±30kV contact
• Low capacitance for high-speed interfaces
• Able to withstand a high-level surge current
(40A, 8/20us)
• Flow-through package (3.0 x 2.0 x 0.60mm)
Alternative Solutions
RClamp
®
0512TQ
KEY FEATURES
• 5V working voltage
• Protects two high-speed data lines
• ±30kV air discharge/ ±30kV contact
• Low capacitance: 1.1pF typ
• Dynamic Resistance: 0.075 Ohms (Typ)
• AEC-Q100 qualied
• Small 3-pin 0402 package
(1.0 x 0.60 x 0.40mm)
RClamp
®
2502L
KEY FEATURES
• 2.5V low operating voltage
• Protects up to two I/O lines
• ±15kV air discharge/ ±8kV contact
• <5pF (Line-to-Line) low capacitance
• High surge capability: 40A (tp=8/20μs)
• Industry standard SO-8 package
Gigabit Ethernet Protection with RClamp3374N
RClamp3374N
Ethernet
PHY
RJ-45
Connector
TP1+
TP1-
TP2+
TP2-
TP3+
TP3-
TP4+
TP4-
RClamp3374N
PROTECTION PRODUCTS | PRODUCT BRIEF
Device Parameter Summary
Part # V
rvm
Lines
ESD Rating
Cap
(I/O - I/O)
Ipp @
8/20µs
Package size
(mm)
Schemetic Reference
Air Contact
RClamp3374N 3.3 4 ±30kV ±30kV 1.7pF 40 3.0x2.0x0.6
Center Tabs
Pin 1
Pin
10
LINE
1 Out
LINE
1 In
Pin
2
LINE
2 In
Pin
9
LINE
2 Out
Pin 4
LINE 3 In
Pin 7
LINE
3 Out
Pin 5
LINE 4 In
Pin 6
LINE 4 Ou
t
and Pins 3, 8
RClamp0512TQ 5 2 ±30kV ±30kV 2.0pF 25 1.0x0.6x0.6
1
2
3
RClamp2502L 2.5 2 ±20kV ±5kV 1.5pF 40 4.9x5.9x1.5
Pin 8
Pin 2, 3, 6, 7
Pin 1
Pin 4 Pin 5
RClamp
®
3374N
Semtech, the Semtech logo and RClamp are registered marks of Semtech Corporation. All other trademarks and trade names mentioned may be marks and names of their respective companies.
Semtech reserves the right to make changes to, or discontinue any products described in this document without further notice. Semtech makes no warranty, representation
or guarantee, express or implied, regarding the suitability of its products for any particular purpose. ©2017 Semtech Corporation. All rights reserved. GigabitEth-PB
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•
phone: (805) 498-2111
•
fax: (805) 498-3804