1www.semtech.com
PROTECTION PRODUCTS - RailClamp®®
®®
®
RClamp0503N
RailClamp®®
®®
®
Low Capacitance TVS Diode Array
Description Features
Circuit Diagram Package Dimensions
Revision 03/31/2008
The RailClamp® series is a family of ultra low capaci-
tance TVS arrays designed to protect high speed data
interfaces. This series has been specifically designed to
protect sensitive components which are connected to
high-speed data and transmission lines from overvoltage
caused by ESD (electrostatic discharge), CDE (Cable
Discharge Events), and EFT (electrical fast transients).
They are designed for use in applications where board
space is at a premium. Each device requires less than
1.5mm2 of PCB area and will protect up to three high
speed data lines.
The monolithic design incorporates surge rated, low
capacitance steering diodes and a TVS diode in a single
package. Each line has a maximum capacitance of
0.5pF to ground. The capacitance of each line is well
matched for consistant signal balance. A connection
to the TVS is provided for protection of an external
voltage bus, such as those found in USB applications.
This device is optimized for ESD protection of portable
electronics. They may be used to meet the ESD
immunity requirements of IEC 61000-4-2, Level 4
(±15kV air, ±8kV contact discharge).
The RClamp0503N is in a 6-pin, RoHS/WEEE compliant,
SLP1510N6 package. It measures 1.45 x 1.0 x
0.58mm. The small package makes it ideal for use in
portable electronics such as cell phones, laptops, and
digital still cameras.
Applications
Mechanical Characteristics
ESD protection for high-speed data lines to
IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact)
IEC 61000-4-4 (EFT) 40A (5/50ns)
Array of surge rated diodes with internal TVS Diode
Small package saves board space
Protects three I/O lines and a power line
Low capacitance: 0.5pF maximum
Low clamping voltage
Solid-state silicon-avalanche technology
SLP1510N6 Package
RoHS/WEEE Compliant
Nominal Dimensions: 1.45 x 1.0 x 0.58 mm
Lead Pitch: 0.5mm
Lead Finish: NiPdAu
Marking : Marking Code
Packaging : Tape and Reel
6 Pin SLP1510N6 package (Bottom Side View)
Nominal Dimensions in mm
Device Schematic
USB OTG
MMC Port
Serial ATA
Video Port
SIM Port
PCI Express
1.00
1.45
0.58
1
0.50
23
4
56
5
13 4 6
2© 2008 Semtech Corp. www.semtech.com
PROTECTION PRODUCTS
RClamp0503N
Absolute Maximum Rating
Electrical Characteristics (T = 25oC)
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3© 2008 Semtech Corp. www.semtech.com
PROTECTION PRODUCTS
RClamp0503N
Typical Characteristics
Non-Repetitive Peak Pulse Power vs. Pulse Time Power Derating Curve
0
10
20
30
40
50
60
70
80
90
100
110
0 25 50 75 100 125 150
Ambient Temperat ure - TA (oC)
% of Rated Power or I
PP
Foward Voltage vs. Forward Current
Pin 1,3,4 or 6 to Pin 5
Clamping Voltage vs. Peak Pulse Current
I/O to Gnd - Pin 1, 3, 4 to Gnd at Pin6
Normalize Capacitance vs. Reverse Voltage
I/O to Gnd - Pin 1, 3, 4 to Gnd at Pin 6
0.01
0.1
1
10
0.1 1 10 100 1000
Pulse Duration - tp (µs)
Peak Pulse Power - PPk (kW)
0
5
10
15
20
25
30
35
40
00.511.522.533.54
Peak Pulse Current - IPP (A)
Clamping Voltage - VC (V)
Waveform
Parameters:
tr = 8μs
td = 20μs
0
1
2
3
4
5
6
7
8
00.511.522.533.54
Forward Current - IF (A)
Forward Voltage - VF V)
Waveform
Parameters:
tr = 8μs
td = 20μs
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
01234567
Reverse Voltage - VR (V)
CJ(VR) / CJ(VR=0)
f = 1 MHz
4© 2008 Semtech Corp. www.semtech.com
PROTECTION PRODUCTS
RClamp0503N
Device Connection Options for Protection of three
High-Speed Data Lines
Data line inputs are normally connected at pins 1, 3, &
4 with pin 6 connected to ground. Note that the circuit
at the ground pin is identical to the circuit at each data
input/output pin. This is done to further reduce
capacitance. The connection to ground should be made
directly to a ground plane. The path length should also
be kept as short as possible to minimize parasitic
inductance. Pin 5 can be connected to Vcc biased or
left not connected depending upon the application.
Protecting USB OTG Interfaces
The USB OTG interface consists of Data (D- and D+)
lines, ID and a 5.25V voltage bus. Since these pins are
part of the connector, they are vulnerable to ESD and
cable discharge events. The RClamp0503N is designed
to protect D-, D+, and ID pins of USB OTG
connections. Each device will protect one USB OTG
port. When the voltage on the data lines exceeds the
bus voltage (plus one diode drop), the internal
rectifiers are forward biased conducting the transient
current away from the protected controller chip. The
TVS diode directs the surge to ground. For Vbus
protection, an additional single line TVS, such as
uClamp0501P, should be added.
Applications Information
Figure 1- Pin Configuration & Circuit Diagram
Figure 2 - USB OTG Protection
ID
Vbus
D-
D+
USB OTG
USB OTG
Pin 1
D+
D-
ID
Gnd
Controller Connector
RClamp0503N
Pin 2
Pin 3 Pin 4
Pin 5
Pin 6
uClamp0501P
5
13 4 6
5© 2008 Semtech Corp. www.semtech.com
PROTECTION PRODUCTS
RClamp0503N
Figure 3 - RClamp0503N Spice Model
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Applications Information - Spice Model
6© 2008 Semtech Corp. www.semtech.com
PROTECTION PRODUCTS
RClamp0503N
Outline Drawing - SO-8
Land Pattern - SLP1510N6
Outline Drawing - SLP1510N6
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1.00
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0.90 1.10
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A1
PIN 1
INDICATOR
(LASER MARK)
B
A
C
SEATING
PLANE
12
D/2
E/2
N
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INCHES
.020 BSC
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L
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.012
DIM
A1
A2
A
MIN
0.00
.020
0.300.20.012 0.25
.010
0.4250.30
.004
.003
6
.015
.057
.017
0.08
0.10
6
0.38
1.45
0.50 BSC
MILLIMETERS
MAX
0.05
0.65
DIMENSIONS
MIN
0.00
NOM
(.005)
.023
.001
MAX
.002
.026
NOM
0.50
0.03
(0.13)
0.58
CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).
COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS THE TERMINALS.
NOTES:
2.
1.
G
(C)
Y
Z
P
X
THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY.
CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR
NOTES:
1.
DIM
X
Y
P
G
C
MILLIMETERSINCHES
(0.875)
.010
.027
.008
.020
(.034)
0.25
0.675
0.50
0.20
DIMENSIONS
COMPANY'S MANUFACTURING GUIDELINES ARE MET
.
1.55.061Z
7© 2008 Semtech Corp. www.semtech.com
PROTECTION PRODUCTS
RClamp0503N
Contact Information
Semtech Corporation
Protection Products Division
200 Flynn Road, Camarillo, CA 93012
Phone: (805)498-2111 FAX (805)498-3804
Marking Codes Ordering Information
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TCT.N3050pmalCR000,3hcnI7
RailClamp and RClamp are marks of Semtech Corporation
Tape and Reel Specification
Device Orientation in Tape
epaT
htdiW )xaM(,BD1DE F
K
)XAM( P0P2P)XAM(TW
mm8 mm2.4
)561.(
mm1.0+5.1
mm0.0-
500.+95.0(
)000.-
mm8.0
50.0±
)130.(
01.±057.1
mm
)400.±960.(
50.0±5.3
mm
)200.±831.(
mm4.2
)490.(
1.0±0.4
mm
-00.±751.(
)4
1.0±0.4
mm
-00.±751.(
)4
-m50.0±0.2
m
)20
0.±970.(
mm4.0
)610.(
mm0.8
mm3.0+
mm1.0-
)210.±213.(
Pin 1 Location
User Direction of feed
0503N
0A0B0K
mm01.0±42.1mm01.0±07.1mm01.0±67.0
