SMDA05-6 Unidirectional TVS Array for Protection of Six Lines PROTECTION PRODUCTS Description Features 300 watts peak pulse power (tp = 8/20µs) Transient protection for data lines to The SMDA series of transient voltage suppressors are designed to protect components which are connected to data and transmission lines from voltage surges caused by electrostatic discharge (ESD), electrical fast transients (EFT), and lightning. TVS diodes are characterized by their high surge capability, low operating and clamping voltages, and fast response time. This makes them ideal for use as board level protection of sensitive semiconductor components. The SMDA05-6 is designed to provide transient suppression on multiple data lines and I/O ports. It is designed to operate on 5V digital lines. The low profile SO-8 design allows the user to protect up to six data and I/O lines with one package. IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact) IEC 61000-4-4 (EFT) 40A (5/50ns) IEC 61000-4-5 (Lightning) 12A (8/20µs) Protects up to 6 unidirectional lines Low operating voltage Low clamping voltage Solid-state silicon avalanche technology Mechanical Characteristics The SMDA05-6 TVS diode array will meet the surge requirements of IEC 61000-4-2 (Formerly IEC 801-2), Level 4, “Human Body Model” for air and contact discharge. JEDEC SO-8 package UL 497B listed Molding compound flammability rating: UL 94V-0 Marking : Part number, date code, logo Packaging : Tube or Tape and Reel per EIA 481 RoHS/WEEE Compliant Applications Circuit Diagram 5V data and I/O lines Communication lines Microprocessor based equipment LAN/WAN equipment Servers Notebook and Desktop PC Instrumentation Peripherals Schematic & PIN Configuration SO-8 (Top View) Revision 08/15/06 1 www.semtech.com SMDA05-6 PROTECTION PRODUCTS Absolute Maximum Rating R ating Symbol Value Units Peak Pulse Power (tp = 8/20µs) Pp k 300 Watts Peak Pulse Current (tp = 8/20µs) IP P 17 A Lead Soldering Temperature TL 260 (10 sec.) °C Operating Temperature TJ -55 to +125 °C TSTG -55 to +150 °C Storage Temperature Electrical Characteristics SMDA05-6 Parameter Symbol Conditions Minimum Typical Maximum Units 5 V Reverse Stand-Off Voltage VRWM Reverse Breakdown Voltage V BR It = 1mA Reverse Leakage Current IR VRWM = 5V, T=25°C 20 µA Clamping Voltage VC IPP = 1A, tp = 8/20µs 9.8 V Clamping Voltage VC IPP = 5A, tp = 8/20µs 11 V Junction Capacitance Cj Between I/O pins and Ground VR = 0V, f = 1MHz 400 pF 2006 Semtech Corp. 2 6 V www.semtech.com SMDA05-6 PROTECTION PRODUCTS Typical Characteristics Non-Repetitive Peak Pulse Power vs. Pulse Time Power Derating Curve 10 110 90 % of Rated Power or IPP Peak Pulse Power - Ppk (kW) 100 1 0.1 80 70 60 50 40 30 20 10 0.01 0 0.1 1 10 100 0 1000 25 50 110 150 10 Clamping Voltage - VC (V) 90 80 Percent of IPP 125 11 W aveform Parameters: tr = 8µs td = 20µs 100 e -t 60 50 40 100 Clamping Voltage vs. Peak Pulse Current Pulse Waveform 70 75 Ambient Temperature - TA (oC) Pulse Duration - tp (µs) td = I PP /2 30 20 9 8 7 6 5 4 Waveform Parameters: tr = 8µs td = 20µs 3 2 1 10 0 0 0 5 10 15 20 25 0 30 2 6 8 10 12 14 16 18 Peak Pulse Current - IPP (A) T im e (µs) IEC 61000-4-2 Discharge Parameters ESD Pulse Waveform (IEC 61000-4-2) Level 2006 Semtech Corp. 4 3 First Peak Current Peak Current at 30 ns Peak Current at 60 ns Test Test Voltage Voltage (Contact (A ir Discharge) Discharge) (kV) ( kV ) (A ) (A ) (A ) 1 7.5 4 8 2 2 2 15 8 4 4 4 3 22.5 12 6 6 8 4 30 16 8 8 15 www.semtech.com SMDA05-6 PROTECTION PRODUCTS Applications Information Device Connection for Protection of Six Data Lines Circuit Diagram The SMDA05-6 is designed to protect up to 6 data or I/O lines operating at 5 volts. They are unidirectional devices and may be used on lines where the signal polarities are above ground (i.e. 0 to 5V). The device is connected as follows: z Pins 1, 2, 3, 4, 5 and 8 are connected to the lines that are to be protected. Pins 6 and 7 are connected to ground. The ground connections should be made directly to the ground plane for best results. The path length is kept as short as possible to reduce the effects of parasitic inductance in the board traces. Connection Diagram Circuit Board Layout Recommendations for Suppression of ESD. DATA IN DATA OUT Good circuit board layout is critical for the suppression of ESD induced transients. The following guidelines are recommended: z z z z z z 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. 8 7 6 5 1 2 3 4 Matte Tin Lead Finish Matte tin has become the industry standard lead-free replacement for SnPb lead finishes. A matte tin finish is composed of 100% tin solder with large grains. Since the solder volume on the leads is small compared to the solder paste volume that is placed on the land pattern of the PCB, the reflow profile will be determined by the requirements of the solder paste. Therefore, these devices are compatible with both lead-free and SnPb assembly techniques. In addition, unlike other lead-free compositions, matte tin does not have any added alloys that can cause degradation of the solder joint. 2006 Semtech Corp. DATA IN 4 DATA OUT www.semtech.com SMDA05-6 PROTECTION PRODUCTS Outline Drawing - SO-8 A h D e N h H 2X E/2 E1 E 1 0.25 L (L1) e/2 DETAIL B 01 A D aaa C SEATING PLANE A2 A C SEE DETAIL A .053 .069 .004 .010 .049 .065 .012 .020 .010 .007 .189 .193 .197 .150 .154 .157 .236 BSC .050 BSC .010 .020 .016 .028 .041 (.041) 8 8° 0° .004 .010 .008 1.75 1.35 0.10 0.25 1.25 1.65 0.31 0.51 0.17 0.25 4.80 4.90 5.00 3.80 3.90 4.00 6.00 BSC 1.27 BSC 0.25 0.50 0.40 0.72 1.04 (1.04) 8 0° 8° 0.10 0.25 0.20 SIDE VIEW A1 bxN bbb DIMENSIONS INCHES MILLIMETERS MIN NOM MAX MIN NOM MAX A A1 A2 b c D E1 E e h L L1 N 01 aaa bbb ccc c GAGE PLANE 2 ccc C 2X N/2 TIPS DIM C A-B D NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. DATUMS -A- AND -B- TO BE DETERMINED AT DATUM PLANE -H3. DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. 4. REFERENCE JEDEC STD MS-012, VARIATION AA. Land Pattern - SO-8 X DIM (C) G C G P X Y Z Z Y DIMENSIONS INCHES MILLIMETERS (.205) .118 .050 .024 .087 .291 (5.20) 3.00 1.27 0.60 2.20 7.40 P NOTES: 1. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. 2. REFERENCE IPC-SM-782A, RLP NO. 300A. 2006 Semtech Corp. 5 www.semtech.com SMDA05-6 PROTECTION PRODUCTS Ordering Information Part Number Lead Finish Qty per Reel Reel Size SMDA05-6.TB SnPb 500 7 inch SMDA05-6.TBT Pb Free 500 7 inch SMDA05-6 SnPb 95/Tube N/A SMDA05-6.T Pb Free 95/Tube N/A Note: Lead-free devices are RoHS/WEEE Compliant Contact Information Semtech Corporation Protection Products Division 200 Flynn Road, Camarillo, CA 93012 Phone: (805)498-2111 FAX (805)498-3804 2006 Semtech Corp. 6 www.semtech.com