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PROTECTION PRODUCTS
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PROTECTION PRODUCTS - RailClamp®®
®®
®
RClamp0531T
Ultra-Low Capacitance
1-Line ESD protection
Description Features
Dimensions Schematic & PIN Configuration
Revision 03/07/2011
RailClamp is an ultra low capacitance Transient Voltage
Suppressor (TVS) designed to protect high speed data
interfaces. This device has been specifically designed
to protect sensitive components which are connected
to high-speed data and transmission lines from over-
voltage caused by ESD (electrostatic discharge), CDE
(Cable Discharge Events), and EFT (electrical fast
transients).
The RClampTM0531T has a maximum capacitance of
only 0.80pF. This allows it to be used on circuits
operating in excess of 2.5GHz without signal attenua-
tion. They may be used to meet the ESD immunity
requirements of IEC 61000-4-2.
The RClamp0531T is in a 2-pin SLP1006P2T package
measuring 1.0 x 0.6 x 0.4mm. The leads are spaced
at a pitch of 0.65mm and feature a lead-free finish.
Each device will protect one high-speed line operating
at 5 volts. It gives the designer the flexibility to protect
single lines in applications where arrays are not practi-
cal. The combination of small size, low capacitance,
and high ESD surge capability makes them ideal for
use in applications such as cellular phones and digital
video interfaces.
Applications
Mechanical Characteristics
Cellular Handsets & Accessories
Digital Visual Interface (DVI)
FM Antenna
MDDI Ports
USB Ports
PCI Express
Serial ATA
Transient protection for data lines to
IEC 61000-4-2 (ESD) ±20kV (air), ±12kV (contact)
IEC 61000-4-4 (EFT) 40A (tp = 5/50ns)
Cable Discharge Event (CDE)
Ultra-small package (1.0 x 0.6 x 0.4mm)
Protects one I/O line
Low capacitance: 0.8pF
Low clamping voltage
Low operating voltage: 5.0V
Solid-state silicon-avalanche technology
SLP1006P2T package
Molding compound flammability rating: UL 94V-0
Marking: Marking code + date code
Packaging : Tape and Reel
Lead Finish: NiPdAu
Pb-Free, Halogen Free, RoHS/WEEE Compliant
SLP1006P2T (Bottom View)
Maximum Dimensions (mm)
0.65
0.40
0.60
1.0
F SEMTECH
2© 2011 Semtech Corp. www.semtech.com
PROTECTION PRODUCTS
RClamp0531T
Absolute Maximum Rating
Electrical Characteristics (T=25oC)
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3© 2011 Semtech Corp. www.semtech.com
PROTECTION PRODUCTS
RClamp0531T
Typical Characteristics
Non-Repetitive Peak Pulse Power vs. Pulse Time
0
10
20
30
40
50
60
70
80
90
100
110
0 25 50 75 100 125 150
Ambient Temperature - TA (oC)
% of Rated Power or IPP
Power Derating Curve
Clamping Voltage vs. Peak Pulse Current Normalized Capacitance vs. Reverse Voltage
0.01
0.1
1
10
0.1 1 10 100
Pulse Duration - tp (us)
Peak Pulse Power - PPP (kW)
Insertion Loss S21 USB 2.0 Eye Pattern with RClamp0531T
0
2
4
6
8
10
12
14
16
012345
Peak Pulse Current - IPP (A)
Clamping Voltage -VC (V)
Waveform
Parameters:
tr = 8µs
td = 20µs
0.800
0.850
0.900
0.950
1.000
1.050
1.100
012345
Reverse Voltage (VR)
Cj(VR) / Cj(VR=0V)
f = 1 MHz
1 2 3 4
5
START
. 030 MHz 3 STOP 000 . 000 000 MHz
CH1 S21 LOG 6 dB / REF 0 dB
1: -0.15390 dB
800 MHz
2: -0.1480 dB
900 MHz
3: 0.01210 dB
1.8 GHz
4: 0.09410 dB
2.5 GHz
0 dB
-6 dB
-12 dB
-18 dB
-24 dB
-30 dB
-36 dB
1
GHz
100
MHz 3
GHz
10
MHz
1
MHz
-42 dB
-48 dB
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4© 2011 Semtech Corp. www.semtech.com
PROTECTION PRODUCTS
RClamp0531T
ESD Clamping
(+8kV Contact per IEC 61000-4-2)
ESD Clamping
(-8kV Contact per IEC 61000-4-2)
Note: Data is taken with a 10x attenuator Note: Data is taken with a 10x attenuator
a SEMTECH
5© 2011 Semtech Corp. www.semtech.com
PROTECTION PRODUCTS
RClamp0531T
Equivalent Circuit Diagram
Device Connection Options
These low capacitance TVS diodes are designed to
provide common mode protection for one high-speed line
or differential protection for one line pair. The device is
bidirectional and may be used on lines where the signal
polarity is positive and negative.
Circuit Board Layout Recommendations for Suppres-
sion of ESD.
Good circuit board layout is critical for the suppression
of ESD induced transients. The following guidelines are
recommended:
zPlace the TVS near the input terminals or connec-
tors to restrict transient coupling.
zMinimize the path length between the TVS and the
protected line.
zMinimize all conductive loops including power and
ground loops.
zThe ESD transient return path to ground should be
kept as short as possible.
zNever run critical signals near board edges.
zUse ground planes whenever possible.
Applications Information
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6© 2011 Semtech Corp. www.semtech.com
PROTECTION PRODUCTS
RClamp0531T
RClamp0531T Spice Model
Applications Information - Spice Model
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Note: Spice model is for simulating transient response only.
SEMTECH 51* fifi DIMENSIONS INCHES MILLIMETERS ii 4 MIN NOM MAX MIN NOM MAX A ,015 .015 ,017 0,37 0.40 0.43 A1 ,000 .001 ,002 0,00 0.03 0.05 ,015 .020 ,022 0,45 0.50 0.55 ,020 .024 ,025 0,50 0.60 0.70 268C 0655 005‘ .mm ,012 020‘. E L SEATING R 002‘ .004I ,006 0,0.5I N EI—U L .003 0%3 J I & if I_
7© 2011 Semtech Corp. www.semtech.com
PROTECTION PRODUCTS
RClamp0531T
Outline Drawing - SLP1006P2T
Land Pattern - SLP1006P2T
bxN
e
A1 .000 .001 .002 0.00 0.03 0.05
R
2x L
PIN 1 ID
R .002 .004 .006 0.05 0.10 0.15
A
INCHES
.026 BSC
aaa
N
E
L
e.008
.020
DIM
AMIN
.018
.015
0.30
0.70
0.20
0.50
.003
2
.010
.024
.012
.028
0.08
2
0.25
0.60
0.65 BSC
MILLIMETERS
MAX
0.55
0.43
DIMENSIONS
MIN
0.45
NOM
.016
.020
MAX
.022
.017 NOM
0.37
0.50
0.40
CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).
NOTES:
1.
BOTTOM VIEW
TOP VIEW
AB
C
b
aaa C
SEATING
PLANE
bbb C A B
D.035 .039 .043 0.90 1.10
1.00
.004bbb 0.10
D
E
A1
THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY.
CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR
NOTES:
2.
DIM
Y
G
C
MILLIMETERSINCHES
(0.85)
.055
.012
.022
(.033)
1.40
0.55
0.30
DIMENSIONS
COMPANY'S MANUFACTURING GUIDELINES ARE MET.
Z
Y
(C) GZ
X .024 0.60
X
1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).
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8© 2011 Semtech Corp. www.semtech.com
PROTECTION PRODUCTS
RClamp0531T
Contact Information
Semtech Corporation
Protection Products Division
200 Flynn Rd., Camarillo, CA 93012
Phone: (805)498-2111 FAX (805)498-3804
Marking Code Ordering Information
Tape and Reel Specification
RailClamp and RClamp are trademarks of Semtech Corporation.
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Notes:
1) Marking will also include line matrix date code
2) Device is electrically symmetrical
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mm1.0+5.1
mm0.0-
500.+95.0(
)000.-
mm4.0
52.0±
)130.(
01.±057.1
mm
)400.±960.
(
50.0±5.3
mm
)200.±831.(
01.0±0.4
mm
-00.±751.(
)4
1.0±0.4
mm
-00.±751.(
)4
50.0±0.2
mm
)200.±970.(
20.0±452.0
)610.(mm
mm0.8
mm3.0+
mm1.0-
)210.±213.(
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mm01.0-/+96.0mm01.0-/+91.1mm01.0-/+66.0
Band Location
(Opposite Sprocket Holes)
3T
3T
3T