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Low Capacitance TVS for Ethernet and Telecom Interfaces
PROTECTION PRODUCTS - TransClamp Description
A TransClamp is a low capacitance TVS array designed to protect high speed data interfaces. This series has been specifically designed to protect sensitive components which are connected to data and transmission lines from overvoltage caused by ESD (electrostatic discharge), CDE (Cable Discharge Events), and Lightning. These devices integrate low capacitance, surge-rated compensation diodes with a high power transient voltage suppressor (TVS). The compensation diodes are arranged in a bridge pattern allowing the device to be connected in common mode and/or differential mode. This allows the designer maximum flexibility and reduces parts count. The capacitance of the device is limited to 12pF maximum from line-to-line to ensure correct signal transmission on high-speed lines. These devices may be used to meet Telcordia GR-1089CORE short-haul (intra-building) surge requirements and will withstand a minimum 100 A surge for a 2/10s pulse. The TClampTM2502N is 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. They are particularly well suited for applications where board space is at a premium such as integrated connectors/ magnetics and carrier class Ethernet equipment.
TCLAMP2502N
Features
Transient protection for high-speed data lines to Bellcore 1089 (Intra-Building) 100A (2/10s) IEC 61000-4-2 (ESD) 15kV (air), 8kV (contact) IEC 61000-4-4 (EFT) 40A (5/50ns) IEC 61000-4-5 (Lightning) L5, 95A (8/20s) Low capacitance (12pF line-to-line) Low operating voltages (2.5V) Low clamping voltage Small SLP Package saves board space Solid-state technology
Mechanical Characteristics
SLP2626P10 10L package RoHS/WEEE Compliant Nominal Dimensions: 2.6 x 2.6 x 0.60 mm Lead Pitch: 0.5mm Molding compound flammability rating: UL 94V-0 Marking: Marking Code + Date Code Packaging: Tape and Reel per EIA 481
Applications
Ethernet T3/E3 Integrated Magnetics Carrier Class Equipment Customer Premise Equipment
Circuit Diagram
LINE 1 (1, 2, 3)
Package Configuration
2.60
12 C L
C 2.60 L
Center Tab
0.50 BSC
LINE 2 (8, 9, 10)
0.60
10 Pin SLP package (Bottom Side View) Nominal Dimensions in mm
Revision 04/04/2007 1 www.semtech.com
TCLAMP2502N
PROTECTION PRODUCTS Absolute Maximum Rating
Rating Peak Pulse Power (tp = 2/10s) Peak Pulse Current (tp = 2/10s) Peak Pulse Current (tp = 8/20s) ESD per IEC 61000-4-2 (Air) ESD per IEC 61000-4-2 (Contact) Operating Temperature Storage Temperature Symbol Ppk IPP IPP VESD TJ TSTG Value 2500 120 95 30 30 -40 to +85 -55 to +150 Units Watts A A kV C C
Electrical Characteristics (T=25oC unless otherwise specified)
TCLAMP2502N Parameter Reverse Stand-Off Voltage Punch-Through Voltage Snap-Back Voltage Reverse Leakage Current Clamping Voltage Clamping Voltage Junction Capacitance Symbol VRWM V PT VSB IR VC VC Cj Conditions T=25C to 85C IPT = 2A T=25C ISB = 50mA VRWM = 2.5V, T=25C IPP = 100A, tp = 2/10s Line-to-Ground IPP = 100A, tp = 2/10s Line-to-Line Between I/O pins and Gnd VR = 0V, f = 1MHz Between I/O pins VR = 0V, f = 1MHz 2.7 2.0 0.5 17 25 25 Minimum Typical Maximum 2.5 Units V V V A V V pF
12
pF
(c) 2007 Semtech Corp.
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TCLAMP2502N
PROTECTION PRODUCTS Typical Characteristics
Non-Repetitive Peak Pulse Power vs. Pulse Time
100
Power Derating Curve
110 100 90 80 70 60 50 40 30 20 10 0
Peak Pulse Power - P (kW) PP
10
1
0.1 0.1 1 10 Pulse Duration - tp (s) 100 1000
% of Rated Power or IPP
0
25
50
75
100
125
150
Ambient Temperature - TA (oC)
Normalized Junction Capacitance vs. Reverse Voltage (Line-to-Line)
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 0 0.5 1 1.5 Reverse Voltage - VR (V) 2 f = 1 MHz
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 0
Normalized Junction Capacitance vs. Reverse Voltage (Line-to-Ground)
f = 1 MHz
CJ (VR) / CJ (VR=0)
2.5
CJ (VR) / CJ (VR=0)
0.5
1 1.5 Reverse Voltage - VR (V)
2
2.5
Clamping Voltage vs. Peak Pulse Current
20 18 Clamping Voltage - VC (V) 16 14 12 10 8 6 4 2 0 0 10 20 30 40 50 60 70 80 90 100 Peak Pulse Current - IPP (A) Waveform Parameters: tr = 2s td = 10s
(c) 2007 Semtech Corp.
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TCLAMP2502N
PROTECTION PRODUCTS Typical Characteristics
Typical Insertion Loss S21 (Each Line)
CH1 S21 LOG 6 dB / REF 0 dB 1: -3.0019 dB 256.099 MHz 0 dB -6 dB -12 dB -18 dB -24 dB -30 dB -36 dB -42 dB -48 dB 1 MHz START. 030 MHz 10 MHz 100 MHz 3 1 GHz GHz STOP 3000. 000000 MHz
START. 030 MHz STOP 3000. 000000 MHz
2 3 1 5
Analog Crosstalk (Each Line)
CH1 S21 LOG 20 dB / REF 0 dB
2: -14.476 dB 800 MHz 3: -16.492 dB 900 MHz 4: -10.713 dB 1.8 GHz 5: -7.5353 dB 2.5 GHz
4
ESD Clamping (+8kV per IEC 61000-4-2)
ESD Clamping (-8kV per IEC 61000-4-2)
Note: Data is taken with a 10x attenuator
Note: Data is taken with a 10x attenuator
(c) 2007 Semtech Corp.
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TCLAMP2502N
PROTECTION PRODUCTS Applications Information
Device Connection Options for Protection of Two High-Speed Data Lines TCLAMP2502N is designed to protect two high-speed data lines (one differential pair) from transient overvoltages which result from lightning and ESD. They can be configured to protect in differential (Line-to-Line) and common (Line-to-Ground) mode. Data line inputs/ outputs are connected at pins 1, 2 and 3, and 8, 9 and 10 as shown. For proper operation, pins 1 - 3 must be connected together and pins 8 - 10 must be connected together. Pins 4, 5, 6, and 7 may be left unconnected. For differential operation, the center tab is also left not connected. For common mode operation, the center tab is connected to ground. The ground connection should be made directly to a ground plane on the board for best results. The use of multiple vias is recommended for reduced ground loop inductance. Circuit Diagram
LINE 1 (1, 2, 3)
Center Tab
LINE 2 (8, 9, 10)
Configuration (Top View) Pin Conf iguration (Top Side Vie w)
1 2 3 4 5 GND
10 9 8 7 6
Pin 1, 2, 3 8, 9, 10 4, 5, 6, 7 Center Tab
Identification Line 1 in/out Line 2 in/out N o Connect Ground
(c) 2007 Semtech Corp.
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TCLAMP2502N
PROTECTION PRODUCTS Applications Information - Spice Model
TCLAMP2502N Spice Model & Parameters
D3 D1
D2
D3
D2
TCLAMP2502N Spice Model
Table 1 - TCLAMP2502N Spice Parameters Parameter IS BV VJ RS IB V CJO TT M N EG Unit A mp Volt Volt Ohm Amp Farad sec --eV D1 (T VS) 1.4E-11 2.8 8 0.015 1E-3 400e-12 2.541E-9 0.256 1.1 1.11 D2 (LCR D) 1.001E-20 150 0.59 0.075 1E-3 11.0E-12 2.541E-9 0.01 1.1 1.11 D3 (LCR D) 1.001E-20 150 0.59 0.05 1E-3 11.0E-12 2.541E-9 0.01 1.1 1.11
(c) 2007 Semtech Corp.
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TCLAMP2502N
PROTECTION PRODUCTS Outline Drawing - SLP2626P10
A D B
DIM
PIN 1 INDICATOR (LASER MARK)
E
A aaa C A2 D1 C 12L E/2 C L E1 LxN e N bxN D/2 bbb A1 C
SEATING PLANE
A A1 A2 b D D1 E E1 e L N aaa bbb
DIMENSIONS INCHES MILLIMETERS MIN NOM MAX MIN NOM MAX .020 .024 .026 0.50 0.60 0.65 .000 .001 .002 0.00 0.03 0.05 (.007) (0.17) .007 .010 .012 0.20 0.25 0.30 .098 .102 .106 2.50 2.60 2.70 .079 .085 .089 2.00 2.15 2.25 .098 .102 .106 2.50 2.60 2.70 .044 .050 .054 1.11 1.26 1.36 .020 BSC 0.50 BSC .011 .014 .016 0.30 0.35 0.40 10 10 .003 0.08 .004 0.10
CAB
NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).
2. COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS THE TERMINALS.
Land Pattern - SLP2626P10
P
X
Z
G
F
(C)
DIM B C F G P X Y Z
DIMENSIONS INCHES MILLIMETERS .081 2.05 .100 2.50 .050 1.26 .073 1.85 .020 0.50 .012 0.30 .025 0.65 .124 3.15
Y
B
NOTES: 1. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET.
(c) 2007 Semtech Corp.
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TCLAMP2502N
PROTECTION PRODUCTS Marking Ordering Information
Part Number TClamp 2502N .TCT Qty per Reel 3,000 Reel Size 7 Inch
2502N
YYWW
YY = year WW = Week
Note: Lead finish is lead-free NiPdAu TransClamp and TClamp are marks of Semtech Corporation
Tape and Reel Specification
Pin 1 Location
User Direction of feed
Device Orientation in Tape
A0 2.77 +/-0.05 mm B0 2.77 +/-0.05 mm K0 0.80 +/-0.05 mm
Tape Width
B, (Max)
D
D1
E
F
K (MAX)
P
P0
P2
T(MAX)
W 8.0 mm + 0.3 mm - 0.1 mm
8 mm
4.2 mm (.165)
1.5 + 0.1 mm - 0.0 mm
1.0 mm 0.05
1.750.10 mm
3.50.05 mm
2.4 mm
4.00.1 mm
4.00.1 mm
2.00.05 mm
0.4 mm
Contact Information
Semtech Corporation Protection Products Division 200 Flynn Rd., Camarillo, CA 93012 Phone: (805)498-2111 FAX (805)498-3804
(c) 2007 Semtech Corp. 8 www.semtech.com

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