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| Ultra-Low Capacitance 1-Line ESD protection PROTECTION PRODUCTS - RailClamp(R) PROTECTION PRODUCTS Description The RailClamp family is a series of ultra low capacitance Transient Voltage Suppressors (TVS) 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 RClampTM1521P has a maximum capacitance of only 0.5pF. 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 61000-4-2, Level 4 (15kV air, 8kV contact discharge). The RCLAMP1521P is in a 2-pin, RoHS/WEEE compliant, SLP1006P2 package measuring 1.0 x 0.6 x 0.5mm. The leads are spaced at a pitch of 0.65mm and feature a lead-free finish. Each device will protect one highspeed line operating at 15 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 them ideal for use in applications such as cellular phones and high-power USB. RCLAMP1521P Features Transient protection for data lines to IEC 61000-4-2 (ESD) 15kV (air), 8kV (contact) IEC 61000-4-4 (EFT) 40A (tp = 5/50ns) Cable Discharge Event (CDE) Ultra-small package (1.0 x 0.6 x 0.5mm) Protects one data or I/O line Low capacitance: 0.3pF typical Low clamping voltage Low operating voltage: 15V Solid-state silicon-avalanche technology Mechanical Characteristics SLP1006P2 package Molding compound flammability rating: UL 94V-0 Marking: Marking code Packaging : Tape and Reel Lead Finish: NiPdAu RoHS/WEEE Compliant Applications Cellular Handsets & Accessories USB Ports PCI Express Serial ATA Dimensions 1.0 0.60 0.65 Schematic & PIN Configuration 0.50 Maximum Dimensions (mm) Revision 10/26/2007 1 SLP1006P2 (Bottom View) www.semtech.com RCLAMP1521P PROTECTION PRODUCTS Absolute Maximum Rating Rating Peak Pulse Power (tp = 8/20s) 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 VESD TJ TSTG Value 120 4 +/- 15 +/- 8 -55 to +125 -55 to +150 Units Watts A kV C C Electrical Characteristics (T=25oC) Parameter Reverse Stand-Off Voltage Reverse Breakdown Voltage Reverse Leakage Current Clamp ing Voltage Clamp ing Voltage Symbo l VRWM V BR IR VC VC It = 1mA VRWM = 15V, T=25C IPP = 1A, tp = 8/20s IPP = 4A, tp = 8/20s VR = 0V, f = 1MHz 0.30 16.7 1 28 30 0.50 Conditions Minimum Typical Maximum 15 Units V V A V V pF Junction Cap acitance Cj (c) 2007 Semtech Corp. 2 www.semtech.com RCLAMP1521P PROTECTION PRODUCTS Typical Characteristics Non-Repetitive Peak Pulse Power vs. Pulse Time 10 (kW) 110 100 90 % of Rated Power or I PP 80 70 60 50 40 30 20 10 0 Power Derating Curve PP Peak Pulse Power - P 1 0.1 0.01 0.1 1 10 Pulse Duration - tp (s) 100 1000 0 25 50 75 100 125 150 Ambient Temperature - TA (oC) Clamping Voltage vs. Peak Pulse Current 35 30 25 20 15 10 5 0 0 1 2 3 Peak Pulse Current - IPP (A) 4 CJ(VR) / CJ(VR=0) 1.5 2 Normalized Capacitance vs. Reverse Voltage f = 1 MHz Clamping Voltage - V C (V) 1 Waveform Parameters: tr = 8s td = 20s 0.5 5 0 0 1 2 3 4 5 6 7 8 9 10 11 Reverse Voltage - VR (V) 12 13 14 15 ESD Clamping (8kV Contact per IEC 61000-4-2) CH1 S21 Insertion Loss S21 LOG 6 dB / REF 0 dB 1: -.08890 dB 900 MHz 2: -.21340 dB 1.8 GHz 1 2 34 3: -.0038 dB 2.5 GHz 0 dB -6 dB -12 dB -18 dB -24 dB -30 dB -36 dB 1 MHz START . 030 MHz 10 MHz 100 MHz 3 1 GHz GHz STOP 3000. 000000 MHz 4: -.15310 dB 2.7 GHz Note: Data is taken with a 10x attenuator (c) 2007 Semtech Corp. 3 www.semtech.com RCLAMP1521P PROTECTION PRODUCTS Applications Information 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 Suppression of ESD. Good circuit board layout is critical for the suppression of ESD induced transients. The following guidelines are recommended: Place the TVS near the input terminals or connectors to restrict transient coupling. Minimize the path length between the TVS and the protected line. Minimize all conductive loops including power and ground loops. The ESD transient return path to ground should be kept as short as possible. Never run critical signals near board edges. Use ground planes whenever possible. Equivalent Circuit Diagram (c) 2007 Semtech Corp. 4 www.semtech.com RCLAMP1521P PROTECTION PRODUCTS Applications Information - Spice Model I/O Line RCLAMP1521P Spice Model R Clamp1521P Spice Parameters Parameter IS BV VJ RS IB V CJO TT M N EG Unit A mp Volt Volt Ohm A mp Farad sec --eV D1 (LCR D) 1.0E-20 100 0.7 0.458 1E-3 0.4E-12 2.541E-9 0.01 1.1 1.11 D2 (LCR D) 1.0E-20 100 0.7 0.89 1E-3 0.4E-12 2.541E-9 0.01 1.1 1.11 D3 (T VS) 2.0E-12 19.5 0.6 0.8 1E-3 56E-12 2.541E-9 0.23 1.1 1.11 (c) 2007 Semtech Corp. 5 www.semtech.com RCLAMP1521P PROTECTION PRODUCTS Outline Drawing - SLP1006P2 A D B E DIMENSIONS INCHES MILLIMETERS DIM MIN NOM MAX MIN NOM MAX A A1 b D E e L R N aaa bbb .016 .020 .022 .000 .001 .002 .018 .020 .022 .035 .039 .043 .020 .024 .028 .026 BSC .008 .010 .012 .002 .004 .006 2 .003 .004 0.40 0.50 0.55 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 TOP VIEW A aaa C A1 PIN 1 ID R bxN bbb CAB 2x L e C SEATING PLANE BOTTOM VIEW NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). Land Pattern - SLP1006P2 Y (C) G Z DIMENSIONS DIM C G X Y Z INCHES (.033) .012 .024 .022 .055 MILLIMETERS (0.85) 0.30 0.60 0.55 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. (c) 2007 Semtech Corp. 6 www.semtech.com RCLAMP1521P PROTECTION PRODUCTS Marking Code Ordering Information Part Number Qty per Reel 3,000 Reel Size 7 Inch ZZ PIN 1 ID Tape and Reel Specification RCLAMP1521P.TCT Note: Lead finish is lead-free NiPdAu. RailClamp and RClamp are marks of Semtech Corporation. A0 0.69 +/-0.10 mm B0 1.19 +/-0.10 mm K0 0.66 +/-0.10 mm Tape Width B, (Max) D 1.5 + 0.1 mm - 0.0 mm (0.59 +.005 - .000) D1 E F K (Max) P P0 P2 T (Max) W 8 mm 4.2 mm (.165) 0.8 mm 0.25 (.031) 1.7500.1 mm (.069.004) 3.50.05 mm (.138.002) 2.4 mm (.094) 4.00.10 mm (.157.004) 4.00.1 mm (.157.004) 2.00.05 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 www.semtech.com (c) 2007 Semtech Corp. 7 |
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