SMDA05-6 Unidirectional TVS Array for Protection of Six Lines PROTECTION PRODUCTS Description Features u 300 watts peak pulse power (tp = 8/20µs) u 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 ESD (electrostatic discharge), EFT (electrical fast transients), and lightning. u u u u 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 u u u u u 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 Applications u u u u u u u u Circuit Diagram 5V data & I/O lines Communication lines Microprocessor based equipment LAN/WAN equipment Servers Notebook & Desktop PC Instrumentation Peripherals Schematic & PIN Configuration SO-8 (Top View) Revision 9/2000 1 www.semtech.com SMDA05-6 PROTECTION PRODUCTS Absolute Maximum Rating R ating Symbo l Value Units Peak Pulse Pow er (tp = 8/20µ s) Pp k 300 Watts Peak Pulse Current (tp = 8/20µ s) I PP 17 A Lead Sold ering Temp erature TL 260 (10 sec.) °C Op erating Temp erature TJ -55 to +125 °C TSTG -55 to +150 °C Storage Temp erature Electrical Characteristics SMDA05-6 Par ame te r Symbo l Co nd itio ns Minimum Typ ical Maximum Units 5 V Reverse Stand -Off Voltage VRWM Reverse Breakd ow n Voltage V BR It = 1mA Reverse Leakage Current IR V RWM = 5V, T=25°C 20 µA Clamp ing Voltage VC IPP = 1A , tp = 8/20µ s 9.8 V Clamp ing Voltage VC IPP = 5A , tp = 8/20µ s 11 V Maximum Peak Pulse Current I PP tp = 8/20µ s 17 A Junction Cap acitance Cj Betw een I/O p ins and Gnd V R = 0V, f = 1MHz 400 pF ã 2000 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 - P PP (kW) 100 1 0.1 80 70 60 50 40 30 20 10 0 0.01 0.1 1 10 100 0 1000 25 50 100 125 150 Clamping Voltage vs. Peak Pulse Current Pulse Waveform 11 110 Waveform Parameters: tr = 8µs td = 20µs 90 80 70 e 60 10 Clamping Voltage - VC (V) 100 Percent of IPP 75 Ambient Temperature - TA (oC) Pulse Duration - tp (µs) -t 50 40 td = IPP/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 IEC 61000-4-2 Discharge Parameters ESD Pulse Waveform (IEC 61000-4-2) Level ã 2000 Semtech Corp. 4 Peak Pulse Current - IPP (A) Time (µs) 3 First Peak Current Peak Current at 30 ns Peak Current at 60 ns Test Test Voltage Voltage (Contact ( A ir Disch arge) Disch arge) (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: l 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 Good circuit board layout is critical for the suppression of ESD induced transients. The following guidelines are recommended: l l l l l l 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. DATA IN ã 2000 Semtech Corp. 4 DATA OUT 8 7 6 5 1 2 3 4 DATA OUT www.semtech.com SMDA05-6 PROTECTION PRODUCTS Outline Drawing - SO-8 Land Pattern - SO-8 ã 2000 Semtech Corp. 5 www.semtech.com SMDA05-6 PROTECTION PRODUCTS Ordering Information Par t Numbe r Wo r king Vo ltage Qty p e r Reel R e e l Size SMDA05-6.TB 5V 500 7 Inch SMDA05-6.TE 5V 2,500 13 Inch Note: (1) No suffix indicates tube pack. Contact Information Semtech Corporation Protection Products Division 652 Mitchell Rd., Newbury Park, CA 91320 Phone: (805)498-2111 FAX (805)498-3804 ã 2000 Semtech Corp. 6 www.semtech.com