RClamp2504N & RClamp3304N
PROTECTION PRODUCTS - RailClamp
®
Description
A RailClamp
®
is a low capacitance TVS array designed
to protect high speed data interfaces. This series has
been specifically designed to protect sensitive compo-
nents which are connected to data and transmission
lines from overvoltage caused by
ESD
(electrostatic
discharge),
CDE
(Cable Discharge Events), and
Light-
ning.
The unique design incorporates surge rated, low
capacitance steering diodes and a TVS diode in a
single package. During transient conditions, the
steering diodes direct the transient current to ground.
The internal TVS diode clamps the transient voltage to
a safe level. The low capacitance array configuration
allows the user to protect up to four high-speed data
lines.
The RClamp
®
3304N and RClamp
®
2504N are con-
structed using Semtech’s proprietary EPD process
technology. The EPD process provides low stand-off
voltages with significant reductions in leakage current
and capacitance over silicon-avalanche diode pro-
cesses. They feature a true operating voltage of 2.5
volts and 3.3 volts for superior protection.
These devices are in a 10-pin, RoHS/WEEE compliant,
SLP2626P10 package. It measures 2.6 x 2.6 x
0.60mm. The leads are spaced at a pitch of 0.5mm
and are finished with lead-free NiPdAu. The high surge
capability (Ipp=25A, tp=8/20μs) means it can be used
in high threat environments in applications such as
Gigabit Ethernet, telecommunication lines, and digital
video.
RailClamp
®
2.5V & 3.3V TVS Arrays
Features
Transient protection for high-speed data lines to
IEC 61000-4-2 (ESD) 15kV (air), 8kV (contact)
IEC 61000-4-4 (EFT) 40A (5/50ns)
IEC 61000-4-5 (Lightning) 25A (8/20μs)
Array of surge rated diodes with internal TVS Diode
Small package saves board space
Protects up to four I/O lines
Low capacitance
(<5pF)
for high-speed interfaces
Low leakage current and clamping voltage
Low operating voltage:
2.5V and 3.3V
Solid-state silicon-avalanche technology
Mechanical Characteristics
SLP2626P10 10L package
RoHS/WEEE Compliant
Nominal Dimensions: 2.6 x 2.6 x 0.60 mm
Lead Finish: NiPdAu
Molding compound flammability rating: UL 94V-0
Marking : Marking Code + Date Code
Packaging : Tape and Reel
Applications
USB 2.0
10/100/1000 Ethernet
Digital Visual Interface (DVI)
T1/E1 Secondary Protection
T3/E3 Secondary Protection
Analog Video
Circuit Diagram
Package Configuration
2.60
1 2
C
L
Pin 5
C
2.60
L
Pin 1
Pin 9
Pin 3
Pin 7
0.50 BSC
Gnd
0.60
Revision 04/07/2009
1
www.semtech.com
RClamp2504N & RClamp3304N
PROTECTION PRODUCTS
Absolute Maximum Rating
R ating
Peak Pulse Power (tp = 8/20
μ
s)
Peak Pulse Current (tp = 8/20
μ
s)
ESD p er IEC 61000-4-2 (Air)
ESD p er IEC 61000-4-2 (Contact)
Op erating Temp erature
Storage Temp erature
Symbol
P
p k
I
P P
V
ESD
T
J
T
STG
Value
450
25
25
15
-55 to +125
-55 to +150
Units
Watts
A
kV
°C
°C
Electrical Characteristics (T=25
o
C)
R Clamp2504N
Parameter
Reverse Stand-Off Voltage
Punch-Through Voltage
Snap -Back Voltage
Reverse Leakage Current
Clamp ing Voltage
Clamp ing Voltage
Clamp ing Voltage
Junction Cap acitance
Symbol
V
RWM
V
PT
V
SB
I
R
V
C
V
C
V
C
C
j
I
PT
= 2
μ
A
I
SB
= 50mA
V
RWM
= 2.5V, T=25°C
I
PP
= 1A, t
p
= 8/20
μ
s
I
PP
= 10A, t
p
= 8/20
μ
s
I
PP
= 25A, t
p
= 8/20
μ
s
Between I/O p ins and Ground
V
R
= 0V, f = 1MHz
Between I/O p ins
V
R
= 0V, f = 1MHz
3.8
2.0
2.7
2.0
0.5
4.5
7.5
15
5
Conditions
Minimum
Typical
Maximum
2.5
Units
V
V
V
μ
A
V
V
V
pF
pF
Note 1: I/O pins are pin 1, 3, 7, and 9
©
2009 Semtech Corp.
2
www.semtech.com
Wireless Connectivity
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