RClamp0522P
RClamp0524P
Ultra Low Capacitance TVS Arrays
PROTECTION PRODUCTS - RailClamp®
Description
PRELIMINARY
Features
RailClamps® are ultra low capacitance 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).
The RClampTM0522P and RClampTM0524P have a
typical capacitance of only 0.30pF between I/O pins.
This allows it to be used on circuits operating in excess
of 3GHz without signal attenuation. They may be used
to meet the ESD immunity requirements of IEC 610004-2, Level 4 (±15kV air, ±8kV contact discharge). The
RClamp0522P is designed to protect two lines, while
the RClamp0524P will protect four lines.
The RClamp0522P is in a 6-pin, RoHS/WEEE compliant,
SLP1610P4 package. It measures 1.6 x 1.0 with a nominal height of 0.58mm. The RClamp0524P is in a 10-pin,
RoHS/WEEE compliant, SLP2510P8 package. It measures 2.5 x 1.0 with a nominal height of 0.58mm. The
leads are spaced at a pitch of 0.5mm and are finished
with lead-free NiPdAu. They are designed for easy PCB
layout by allowing the traces to run straight through the
device. The combination of small size, low capacitance,
and high level of ESD protection makes them a flexible
solution for applications such as HDMI, DisplayPortTM,
MDDI, and eSATA interfaces.
ESD protection for high-speed data lines to
Mechanical Characteristics
High Definition Multi-Media Interface (HDMI)
Digital Visual Interface (DVI)
DisplayPortTM Interface
MDDI Ports
PCI Express
eSATA Interfaces
Circuit Diagram - RClamp0524P
Pin 1
Pin 2
3, 4
Pin 2
Pin 4
Pin 5
3, 8
2-Line Protection
Revision 03/11/2009
SLP1610P4 6-pin package (1.6 x 1.0 x 0.58mm)
SLP2510P8 10-pin package (2.5 x 1.0 x 0.58mm)
RoHS/WEEE Compliant
Lead Pitch: 0.5mm
Lead finish: NiPdAu
Marking: Marking Code
Packaging: Tape and Reel
Applications
Circuit Diagram - RClamp0522P
Pin 1
IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact)
IEC 61000-4-5 (Lightning) 5A (8/20μs)
IEC 61000-4-4 (EFT) 40A (5/50ns)
Package design optimized for high speed lines
Flow-Through design
Protects two or four I/O lines
Low capacitance: 0.3pF typical (I/O to I/O)
Low clamping voltage
Low operating voltage: 5V
Solid-state silicon-avalanche technology
4-Line Protection
1
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RClamp0522P
RClamp0524P
Ultra Low Capacitance TVS Arrays
PROTECTION PRODUCTS - RailClamp®
Pin Identification and Configuration
PRELIMINARY
RClamp0522P
RClamp0524P
6
5
4
10
9
8
7
6
1
2
3
1
2
3
4
5
Pin
Identification
Pin
Identification
1-2
Input Lines
1, 2, 4, 5
Input Lines
5-6
Output Lines
(No Internal Connection)
6, 7, 9, 10
Output Lines
(No Internal Connection)
3-4
Ground
3, 8
Ground
SLP2510P8 Pin Configuration (Top View)
SLP1610P4 Pin Configuration (Top View)
Pin 1
Pin 2
Pin 1
3, 4
Pin 2
Pin 4
Pin 5
3, 8
Circuit Diagram
Circuit Diagram
Ordering Information
Part Number
Number
of Lines
Qty per
Reel
Reel
Size
RClamp0522P.TCT
2
3000
7 Inch
RClamp0524P.TCT
4
3000
7 Inch
Note: Lead finish is lead-free NiPdAu.
RailClamp and RClamp are marks of Semtech Corporation.
2
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RClamp0522P
RClamp0524P
PRELIMINARY
PROTECTION PRODUCTS
Absolute Maximum Rating
Rating
Symbol
Value
Units
Peak Pulse Power (tp = 8/20μs)
Ppk
150
Watts
Peak Pulse Current (tp = 8/20μs)
IPP
5
A
ESD per IEC 61000-4-2 (Air)
ESD per IEC 61000-4-2 (Contact)
VESD
+/- 17
+/- 12
kV
TJ
-55 to +125
°C
TSTG
-55 to +150
°C
Operating Temperature
Storage Temperature
Electrical Characteristics (T=25oC)
Parameter
Symbol
Conditions
Reverse Stand-Off Voltage
VRWM
Any I/O pin to ground
Reverse Breakdown Voltage
V BR
It = 1mA
Any I/O pin to ground
Reverse Leakage Current
IR
VRWM = 5V, T=25°C
Any I/O pin to ground
1
μA
Clamping Voltage
VC
IPP = 1A, tp = 8/20μs
Any I/O pin to ground
15
V
Junction Capacitance
Cj
VR = 0V, f = 1MHz
Between I/O pins
0.4
pF
Junction Capacitance
Cj
VR = 0V, f = 1MHz
Any I/O pin to ground
0.8
pF
© 2008 Semtech Corp.
3
Minimum
Typical
Maximum
Units
5
V
6
V
0.30
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RClamp0522P
RClamp0524P
PRELIMINARY
PROTECTION PRODUCTS
Typical Characteristics
Non-Repetitive Peak Pulse Power vs. Pulse Time
Power Derating Curve
10
110
% of Rated Power or IPP
Peak Pulse Power - PPP (kW)
100
1
0.1
90
80
70
60
50
40
30
20
10
0
0.01
0.1
1
10
100
0
1000
25
50
Pulse Waveform
Percent of I
PP
80
e-t
50
td = IPP/2
30
20
30
Line to Line
25
20
Line to Gnd
15
Waveform
Parameters:
tr = 8µs
td = 20µs
10
5
10
0
0
0
5
10
15
20
25
0
30
1
2
4
5
6
Insertion Loss S21 - I/O to GND
Normalized Capacitance vs. Reverse Voltage
CH1 S21
1.5
1.4
1.3
1.2
1.1
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
3
Peak Pulse Current - IPP (A)
Time (µs)
CJ(VR) / CJ(VR=0)
150
35
Clamping Voltage -VC (V)
90
40
125
40
Waveform
Parameters:
tr = 8µs
td = 20µs
100
60
100
Clamping Voltage vs. Peak Pulse Current
110
70
75
Ambient Temperature - TA (oC)
Pulse Duration - tp (us)
LOG
6 dB / REF 0 dB
1: -0.086 dB
900 MHz
3
0 dB
1
2: -0.0336 dB
1.8 GHz
2
3: -0.126 dB
2.5 GHz
-6 dB
-12 dB
-18 dB
-24 dB
-30 dB
-36 dB
f = 1 MHz
0
1
2
3
Reverse Voltage - VR (V)
4
-42 dB
5
-48 dB
1
MHz
START . 030 MHz
© 2008 Semtech Corp.
4
10
MHz
100
MHz
3
1
GHz GHz
STOP 3000. 000000 MHz
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RClamp0522P
RClamp0524P
PRELIMINARY
PROTECTION PRODUCTS
Typical Characteristics (Con’t)
Insertion Loss S21 - I/O to I/O
CH1 S21
LOG
6 dB / REF 0 dB
1: -0.076 dB
900 MHz
3
0 dB
1
2: -0.062 dB
1.8 GHz
2
3: -0.1087 dB
2.5 GHz
-6 dB
-12 dB
-18 dB
-24 dB
-30 dB
-36 dB
-42 dB
-48 dB
1
MHz
START . 030 MHz
© 2008 Semtech Corp.
10
MHz
100
MHz
3
1
GHz GHz
STOP 3000. 000000 MHz
5
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RClamp0522P
RClamp0524P
PRELIMINARY
PROTECTION PRODUCTS
Applications Information
Design Recommendations for HDMI Protection
Adding external ESD protection to HDMI ports can be
challenging. First, ESD protection devices have an
inherent junction capacitance. Furthermore, adding
even a small amount of capacitance will cause the
impedance of the differential pair to drop. Second,
large packages and land pattern requirements cause
discontinuities that adversely affect signal integrity.
The RClamp0524P and RClamp0522P are specifically
designed for protection of high-speed interfaces such
as HDMI. They present ±8kV ESD
contact discharges (>±15kV air discharge) as outlined
in IEC 61000-4-2. Each device is in a leadless SLP
package that is less than 1.1mm wide. They are
designed such that the traces flow straight through the
device. The narrow package and flow-through design
reduces discontinuities and minimizes impact on signal
integrity. This becomes even more critical as signal
speeds increase.
HDMI Connector
12
11
10
1
GND
GND
9
8
7
1
6
5
4
GND
GND
3
2
1
Figure 1. Flow through Layout Using
R Clam
p052
4P
Clamp052
p0524P
Pin Configuration
Figure 1 is an example of how to route the high speed
differential traces through the RClamp0524P. The
solid line represents the PCB trace. The PCB traces
are used to connect the pin pairs for each line (pin 1 to
pin 10, pin 2 to pin 9, pin 4 to pin 7, pin 5 to pin 6).
For example, line 1 enters at pin 1 and exits at Pin 10
and the PCB trace connects pin 1 and 10 together.
This is true for lines connected at pins 2, 4, and 5 also.
Ground is connected at pins 3 and 8. One large
ground pad should be used in lieu of two separate
pads. The same layout rules apply for the
RClamp0522P.
TDR Measurements for HDMI
The combination of low capacitance, small package, and
flow-through design means it is possible to use these
devices to meet the HDMI impedance requirements of
100Ohm ±15% without any PCB board modification.
Figures 3 and 4 show impedance test results for a TDR
risetime of 200ps and 100ps respectively, using a
Semtech evaluation board with 100 Ohm traces
throughout. Measurements were taken using a TDR
method as outlined in the HDMI Compliance Test
© 2008 Semtech Corp.
6
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RClamp0522P
RClamp0524P
PRELIMINARY
PROTECTION PRODUCTS
Applications Information
Specification (CTS). In each case, the device meets
the HDMI CTS requirement of 100 Ohm ±15% with
plenty of margin.
For signal integrity purposes, the best results will be
obtained by using the RClamp0524P to protect the
high-speed differential pairs. This is because the
device is designed such that the data lines from the
connector line up with the I/O pins of the device
without altering the trace routing. The RClamp0504P
may be used to protect the remaining lines (I2C, CEC,
and hot plug).
B
A
Layout Guidelines for Optimum ESD Protection
Good circuit board layout is critical not only for signal
integrity, but also for effective suppression of ESD induced transients. For optimum ESD protection, the
following guidelines are recommended:
z Place the device as close to the connector as possible. This practice restricts ESD coupling into
adjacent traces and reduces parasitic inductance.
z The ESD transient return path to ground should be
kept as short as possible. Whenever possible, use
multiple micro vias connected directly from the device
ground pad to the ground plane.
z Avoid running critical signals near board edges.
Protecting MDDI Ports with RClamp0524P and
RClamp0522P
The small package size and low capacitance of the
RClamp0522P and RClamp0524P make them ideal for
high-speed lines in portable applications. One such
application is the protection of MDDI ports in cellular
phones. MDDI is a serial data interface operating at
480Mb/s per line pair. The lines are scalable for
increased speed and display resolution. A MDDI port
protection example is shown in Figure 5. The
RClamp0524P is used to protect two differential line
pairs while an RClamp0522P is used to protect the
MDDI strobe lines. Note that devices are used on
both the main board and LCD side of the MDDI port.
Devices on the main board are needed to protect the
MDDI controller in the Baseband processor and
devices on the LCD board to protect MDDI controller in
LCD module. A single line TVS such as the
uClamp0501P is used to protect the MDDI power line.
The protection devices should be placed close to the
connector of each board. Traces are routed directly
through each device, minimizing parasitic inductance.
Connections to the ground plane should be made with
multiple micro vias when possible.
© 2008 Semtech Corp.
X-axis
Y-axis
A
1.905
101.0
B
2.081
107.0
(nsec)
(Ohm)
Figure 2 - TDR Measurement with 200ps risetime
using Semtech Evaluation Board
B
A
X-axis
Y-axis
A
1.80
96
B
2.076
108.0
(nsec)
(Ohm)
Figure 3 - TDR Measurement with 100ps risetime
using Semtech Evaluation Board
Note: Measurements were taken on SLP HDMI EVAL Rev C Board that has 100Ω
differential traces impedance throughout (No trace Compensation).
7
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RClamp0522P
RClamp0524P
PRELIMINARY
PROTECTION PRODUCTS
Applications Information
MDDI_Data0+
MDDI_Data0Gnd
Gnd
MDDI_Data1+
MDDI Link
Controller
MDDI Link
Controller
MDDI_Data1RClamp0524P
RClamp0524P
MDDI_Stb+
MDDI_StbGnd
Gnd
RClamp0522P
RClamp0522P
Host Pwr
Host Gnd
HOST
uClamp0501P
uClamp0501P
Figure 4. MDDI Port Protection
© 2008 Semtech Corp.
8
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RClamp0522P
RClamp0524P
PRELIMINARY
PROTECTION PRODUCTS
Applications Information Spice Model
RClamp0522P Spice Model
R Clamp0522P Spice Parameters
© 2008 Semtech Corp.
Parameter
Unit
D1 (LCR D)
D2 (LCR D)
D3 (T VS)
IS
Amp
1E-14
1E-14
2E-12
BV
Volt
100
100
9.36
VJ
Volt
0.7
0.7
0.6
RS
Ohm
0.578
1.0
2.6
IB V
Amp
1E-3
1E-3
1E-3
CJO
Farad
0.4E-12
0.4E-12
56E-12
TT
sec
2.541E-9
2.541E-9
2.541E-9
M
--
0.01
0.01
0.23
N
--
1.1
1.1
1.1
EG
eV
1.11
1.11
1.11
9
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RClamp0522P
RClamp0524P
PRELIMINARY
PROTECTION PRODUCTS
Applications Information Spice Model
RClamp0524P Spice Model
R Clamp0524P Spice Parameters
© 2008 Semtech Corp.
Parameter
Unit
D1 (LCR D)
D2 (LCR D)
D3 (T VS)
IS
Amp
1E-14
1E-14
2E-12
BV
Volt
100
100
9.36
VJ
Volt
0.7
0.7
0.6
RS
Ohm
0.578
1.0
2.6
IB V
Amp
1E-3
1E-3
1E-3
CJO
Farad
0.4E-12
0.4E-12
56E-12
TT
sec
2.541E-9
2.541E-9
2.541E-9
M
--
0.01
0.01
0.23
N
--
1.1
1.1
1.1
EG
eV
1.11
1.11
1.11
10
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RClamp0522P
RClamp0524P
PRELIMINARY
PROTECTION PRODUCTS
Outline Drawing - SO-8
Outline
SLP1610P4
A
D
B
DIM
E
PIN 1
INDICATOR
(LASER MARK)
A
SEATING
PLANE
aaa C
A2
b1xN
bbb
1
.020 .023 .026
0.00 .001 .002
(.005)
.006 .008 .010
.014 .016 .018
.059 .063 .067
.035 .039 .043
.020 BSC
.039 BSC
.012 .015 .017
4
.003
.004
0.50 0.58 0.65
0.00 0.03 0.05
(0.13)
0.15 0.20 0.25
0.35 0.40 0.45
1.50 1.60 1.70
0.90 1.00 1.10
0.50 BSC
1.00 BSC
0.30 0.38 0.43
4
0.08
0.10
C
A1
bxN
C A B
bbb
A
A1
A2
b
b1
D
E
e
e1
L
N
aaa
bbb
DIMENSIONS
INCHES
MILLIMETERS
MIN NOM MAX MIN NOM MAX
2
C A B
R0.125
E/2 LxN
N
2X R0.075
3 PLACES
e
e1
D/2
NOTES:
1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).
Land Pattern - SLP1610P4
P1
P
DIMENSIONS
DIM
C
G
P
P1
X
X1
Y
Y1
Z
Y
Z (C) G
(Y1)
X
X1
INCHES
(.034)
.007
.020
.039
.008
.016
.027
(.061)
.061
MILLIMETERS
(0.87)
0.19
0.50
1.00
0.20
0.40
0.68
(1.55)
1.55
NOTES:
1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).
2. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY.
CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR
COMPANY'S MANUFACTURING GUIDELINES ARE MET.
© 2008 Semtech Corp.
11
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RClamp0522P
RClamp0524P
PRELIMINARY
PROTECTION PRODUCTS
Outline Drawing - SO-8
Outline
SLP2510P8
A
D
B
DIM
E
PIN 1
INDICATOR
(LASER MARK)
A
SEATING
PLANE
aaa C
A2
b1xN
bbb
1
E/2
C
A1
R0.125
A
A1
A2
b
b1
D
E
e
L
N
aaa
bbb
DIMENSIONS
INCHES
MILLIMETERS
MIN NOM MAX MIN NOM MAX
.020 .023 .026 0.50 0.58 0.65
0.00 .001 .002 0.00 0.03 0.05
(.005)
(0.13)
.006 .008 .010 0.15 0.20 0.25
.014 .016 .018 0.35 0.40 0.45
.094 .098 .102 2.40 2.50 2.60
.035 .039 .043 0.90 1.00 1.10
0.50 BSC
.020 BSC
.012 .015 .017 0.30 0.38 0.425
8
8
.003
0.08
.004
0.10
C A B
2
LxN
2X R0.075
7 PLACES
N
bxN
e
bbb
D/2
C A B
NOTES:
1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).
Land Pattern - SLP2510P8
P1
P
DIMENSIONS
DIM
C
G
P
P1
X
X1
Y
Y1
Z
Y
Z (C)
(Y1)
G
X
X1
INCHES
(.034)
.008
.020
.039
.008
.016
.027
(.061)
.061
MILLIMETERS
(0.875)
0.20
0.50
1.00
0.20
0.40
0.675
(1.55)
1.55
NOTES:
1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).
2. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY.
CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR
COMPANY'S MANUFACTURING GUIDELINES ARE MET.
© 2008 Semtech Corp.
12
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RClamp0522P
RClamp0524P
PRELIMINARY
PROTECTION PRODUCTS
Marking Codes
RClamp0522P
RClamp0524P
0522P
PIN 1
INDICATOR
0524P
PIN 1
INDICATOR
Tape and Reel Specification
Pin 1 Location
User Direction of feed
Device Orientation in Tape
Part Number
A0
B0
K0
RClamp0522T
1.30 +/-0.05 mm
1.75 +/-0.05 mm
0.70 +/-0.05 mm
RClamp0524T
1.23 +/-0.05 mm
2.70 +/-0.05 mm
0.70 +/-0.05 mm
Tape
Width
B, (Max)
D
8 mm
4.2 mm
1.5 + 0.1 mm
- 0.0 mm )
D1
E
0.5 mm
±0.05
1.750±.10
mm
F
K
(MAX)
P
P0
P2
T(MAX)
3.5±0.05
mm
2.4 mm
4.0±0.1
mm
4.0±0.1
mm
2.0±0.05
mm
0.4 mm
W
8.0 mm
+ 0.3 mm
- 0.1 mm
Contact Information
Semtech Corporation
Protection Products Division
200 Flynn Road, Camarillo, CA 93012
Phone: (805)498-2111 FAX (805)498-3804
© 2008 Semtech Corp.
13
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Mouser Electronics
Authorized Distributor
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