RClamp2431T

RClamp2431T
Ultra-Low Capacitance
1-Line ESD protection
PROTECTION PRODUCTS - RailClamp®
Description
Features
RailClamp TVS diodes are 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).
®
‹ Transient protection for data lines to
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The RClamp®2431T has a typical capacitance of only
0.35pF. This allows it to be used on Wi-Fi, RFID, and
other circuits operating in excess of 3GHz without
signal attenuation. It may be used to meet the ESD
immunity requirements of IEC 61000-4-2.
IEC 61000-4-2 (ESD)
IEC 61000-4-4 (EFT)
Ultra-small package (1.0 x 0.6 x 0.4mm)
Protects one data line or one I/O pair
Low capacitance: 0.35pF (Typical)
Low clamping voltage
Low operating voltage: 24V
Solid-state silicon-avalanche technology
Mechanical Characteristics
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The RClamp2431T 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
up to 24 volts. It gives the designer the flexibility to
protect single lines in applications where arrays are
not practical. The combination of small size, low
capacitance, and high ESD surge capability makes it
ideal for use in portable equipment such as cellular
phones and netbooks.
SLP1006P2T package
Molding compound flammability rating: UL 94V-0
Marking: Marking code
Packaging : Tape and Reel
Lead Finish: NiPdAu
Pb-Free, Halogen Free, RoHS/WEEE Compliant
Applications
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Dimensions
Cellular Handsets & Accessories
Wi-Fi Interfaces
FeliCa / RFID
Firewire
FM Antenna
Netbooks
Serial ATA
Schematic & PIN Configuration
1.0
0.60
0.65
0.40
Nominal Dimensions (mm)
Revision 01/27/2010
SLP1006P2T (Bottom View)
1
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RClamp2431T
PROTECTION PRODUCTS
Absolute Maximum Rating
R ating
Symbol
Value
Units
Peak Pulse Power (tp = 8/20μs)
Pp k
100
Watts
Peak Pulse Current (tp = 8/20μs)
IP P
2
A
ESD p er IEC 61000-4-2 (Air)
ESD p er IEC 61000-4-2 (Contact)
VESD
+/- 13
+/- 8
kV
TJ
-40 to +85
°C
TSTG
-55 to +150
°C
Op erating Temp erature
Storage Temp erature
Electrical Characteristics (T=25oC)
Parameter
Symbol
Conditions
Minimum
Typical
Maximum
Units
24
V
32
36
V
0.005
0.1
μA
Reverse Stand-Off Voltage
VRWM
Reverse Breakdown Voltage
V BR
It = 1mA
Reverse Leakage Current
IR
VRWM = 24V, T=25°C
Clamping Voltage
VC
IPP = 1A, tp = 8/20μs
45
V
Clamping Voltage
VC
IPP = 2A, tp = 8/20μs
50
V
Junction Capacitance
Cj
0.5
pF
© 2010 Semtech Corp.
VR = 0V, f = 1MHz
2
26.7
0.35
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RClamp2431T
PROTECTION PRODUCTS
Typical Characteristics
Non-Repetitive Peak Pulse Power vs. Pulse Time
Power Derating Curve
110
10
90
% of Rated Power or I PP
Peak Pulse Power - P PP (kW)
100
1
0.1
80
70
60
50
40
30
20
10
0
0.01
0
0.1
1
10
25
50
100
100
125
150
o
Pulse Duration - tp (us)
Normalized Capacitance vs. Reverse Voltage
Clamping Voltage vs. Peak Pulse Current
60
2
1.8
50
1.6
40
Cj(VR) / Cj(VR=0V)
Clamping Voltage -VC (V)
75
Ambient Temperature - TA ( C)
30
20
Waveform
Parameters:
tr = 8µs
td = 20µs
10
1.4
1.2
1
0.8
0.6
0.4
0.2
0
f = 1 MHz
0
0
0.5
1
1.5
2
2.5
0
5
10
15
20
25
Reverse Voltage - VR (V)
Peak Pulse Current - IPP (A)
ESD Clamping
(8kV Contact per IEC 61000-4-2)
Insertion Loss S21
CH1 S21
LOG
6 dB / REF 0 dB
1: -0.03500 dB
800 MHz
5
0 dB
12
3
2: -0.02690 dB
900 MHz
4
3: -0.15840 dB
1.8 GHz
-6 dB
-12 dB
4: -0.59350 dB
2.5 GHz
-18 dB
-24 dB
-30 dB
-36 dB
-42 dB
-48 dB
START . 030 MHz
Note: Data is taken with a 10x attenuator
© 2010 Semtech Corp.
1
MHz
3
10
MHz
100
MHz
3
1
GHz GHz
STOP 3000. 000000 MHz
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RClamp2431T
PROTECTION PRODUCTS
Applications Information
Device Connection Options
Equivalent Circuit Diagram
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 Suppression of ESD.
Good circuit board layout is critical for the suppression
of ESD induced transients. The following guidelines are
recommended:
z Place the TVS near the input terminals or connectors to restrict transient coupling.
z Minimize the path length between the TVS and the
protected line.
z Minimize all conductive loops including power and
ground loops.
z The ESD transient return path to ground should be
kept as short as possible.
z Never run critical signals near board edges.
z Use ground planes whenever possible.
© 2010 Semtech Corp.
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RClamp2431T
PROTECTION PRODUCTS
Outline Drawing - SLP1006P2T
A
B
D
E
DIM
TOP VIEW
A
SEATING
PLANE
aaa C
C
A1
A
A1
b
D
E
e
L
R
N
aaa
bbb
DIMENSIONS
INCHES
MILLIMETERS
MIN NOM MAX MIN NOM MAX
.015 .016 .017
.000 .001 .002
.018 .020 .022
.035 .039 .043
.020 .024 .028
.026 BSC
.008 .010 .012
.002 .004 .006
2
.003
.004
0.37 0.40 0.43
0.00 0.03 0.05
0.45 0.50 0.55
0.90 1.00 1.10
0.50 0.60 0.70
0.65 BSC
0.20 0.25 0.30
0.05 0.10 0.15
2
0.08
0.10
PIN 1 ID
R
bxN
bbb
C A B
2x L
e
BOTTOM VIEW
NOTES:
1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).
Land Pattern - SLP1006P2T
Y
(C)
DIM
C
G
X
Y
Z
Z
G
DIMENSIONS
INCHES
MILLIMETERS
(.033)
(0.85)
.012
0.30
.024
0.60
.022
0.55
.055
1.40
X
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.
© 2010 Semtech Corp.
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RClamp2431T
PROTECTION PRODUCTS
Marking Code
Ordering Information
7T
Part Number
Working
Voltage
Qty per
Reel
Reel
Size
RClamp 2431T.TCT
24V
3,000
7 Inch
Note: Lead finish is lead-free NiPdAu.
RailClamp and RClamp are marks of Semtech Corporation.
Notes:
1) Marking will also include line matrix date code
2) Device is electrically symmetrical
Tape and Reel Specification
Cathode Bar Location
User Direction of feed
Device Orientation in Tape
A0
B0
0.69 +/-0.10 mm
K0
1.19 +/-0.10 mm
0.66 +/-0.10 mm
Tape
Width
B, (Max)
D
D1
8 mm
4.2 mm
(.165)
1.5 + 0.1
mm - 0.0
mm (0.59
+.005
- .000)
0.8 mm
±0.25
(.031)
E
1.750±0.1
mm
(.069±.004)
F
K
(Max)
P
P0
P2
T
(Max)
W
3.5±0.05
mm
(.138±.002)
2.4 mm
(.094)
4.0±0.10
mm
(.157±.004)
4.0±0.1 mm
(.157±.004)
2.0±0.05
mm
(.079±.002)
0.4mm
(.016)
8.0 mm
+ 0.3 mm
- 0.1 mm
(.312±.012)
Contact Information
Semtech Corporation
Protection Products Division
200 Flynn Rd., Camarillo, CA 93012
Phone: (805)498-2111 FAX (805)498-3804
© 2010 Semtech Corp.
6
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