PTVSHC3D18VU

PTVSHC3D18VU Uni-directional 18V High Capacitance TVS Protector Description The PTVSHC3D18VU transient voltage suppressor is designed to replace multilayer varistors (MLVs) in portable applications such as cell phones, notebook computers, and PDA’s. They feature large cross-sectional area junctions for conducting high transient currents, offer desirable electrical characteristics for board level protection, such as fast response time, lower operating voltage, lower clamping voltage and no device degradation when compared to MLVs. The PTVSHC3D18VU protects sensitive semiconductor SOD-323(Top View) components from damage or upset due to electrostatic discharge (ESD) and other voltage induced transient events. The PTVSHC3D18VU is available in a SOD-323 package with working voltages of 18 volt. Feature  1200W Peak pulse power per line (tP = 8/20μs)  SOD-323 package  Response time is typically < 1 ns  Protect one I/O or power line  Low clamping Voltage  RoHS compliant  Transient protection for data lines to IEC 61000-4-2(ESD) Pin1 Pin2 Circuit Diagram ±30KV(air), ±30KV(contact); IEC 61000-4-4 (EFT) 40A (5/50ns) IEC 61000-4-5 (Lightning) 30A (8/20us) Applications  Cell phone handsets and accessories  Personal digital assistants (PDA’s)  Notebooks, desktops, and servers  Portable instrumentation  Cordless phones  Digital cameras  Peripherals  MP3 players Pin1 H18 Pin2 Marking (Top View) Mechanical Characteristics  Lead finish:100% matte Sn(Tin)  Mounting position: Any  Qualified max reflow temperature:260℃  Pure tin plating: 7 ~ 17 um  Pin flatness:≤3mil Rev.06.3 1 www.prisemi.com Transient Voltage Suppressor PTVSHC3D18VU Electronics Parameter Symbol VRWM IR VBR Parameter I IF Peak Reverse Working Voltage Reverse Leakage Current @ VRWM Breakdown Voltage @ IT IT Test Current IPP Maximum Reverse Peak Pulse Current VC Clamping Voltage @ IPP PPP Peak Pulse Power CJ Junction Capacitance IF Forward Current VF Forward Voltage @ IF V VC VBR VRWM IR VF IT IPP Electrical characteristics per line@25℃( unless otherwise specified) Parameter Symbol Peak Reverse Working Voltage Breakdown Voltage Conditions Min. Typ. VRWM 20 21.5 Max. Units 18 V 23 V 1 μA VBR It =1mA Reverse Leakage Current IR VRWM =18V Clamping Voltage VC IPP=1A tP = 8/20μs 25 30 V Clamping Voltage VC IPP=30A tP = 8/20μs 43 47 V Junction Capacitance Cj VR=0V f = 1MHz 250 350 pF Absolute maximum rating@25℃ Rating Symbol Value Units Peak Pulse Power ( tP = 8/20μS ) Ppp 1200 W Lead Soldering Temperature TL 260 (10 sec) ℃ Operating Temperature TJ -55 to +125 ℃ TSTG -55 to +150 ℃ Storage Temperature Rev.06.3 2 www.prisemi.com Transient Voltage Suppressor PTVSHC3D18VU tf=8μs 100 100 80 60 % Of Rated Power IPP – Peak Pulse Current - % of IPP Typical Characteristics tP =20μs(IPP /2) 40 60 40 20 20 0 80 0 5 10 15 20 25 0 30 0 25 50 t - Time -μs Fig 1.Pulse Waveform 50 125 150 400 Pulse waveform: tp=8/20us f=1MHz 320 C-Junction capacitance (pF) VC-Clamping Voltage (V) 100 Fig 2.Power Derating Curve 40 30 20 10 0 0 75 TL – Lead Temperature - ℃ 240 160 80 0 10 20 30 40 0 IPP-Peak pulse current (A) Fig 3. Clamping voltage vs. Peak pulse current 4 8 12 VR-Reverse voltage (V) 16 18 Fig 4. Capacitance vs. Reveres voltage Peak Pulse Power (W) 10000 1000 100 10 1 10 100 Pulse Duration(us) 1000 Fig 5. Non Repetitive Peak Pulse Power vs. Pulse time Rev.06.3 3 www.prisemi.com Transient Voltage Suppressor PTVSHC3D18VU Solder Reflow Recommendation Peak Temp=257℃, Ramp Rate=0.802deg. ℃/sec 280 240 200 160 120 80 40 0 0 30 60 90 120 150 180 240 210 270 300 330 360 390 420 450 480 Time (sec) PCB Design For TVS diodes a low-ohmic and low-inductive path to chassis earth is absolutely mandatory in order to achieve good ESD protection. Novices in the area of ESD protection should take following suggestions to heart:  Do not use stubs, but place the cathode of the TVS diode directly on the signal trace.  Do not make false economies and save copper for the ground connection.  Place via holes to ground as close as possible to the anode of the TVS diode.  Use as many via holes as possible for the ground connection.  Keep the length of via holes in mind! The longer the more inductance they will have. Rev.06.3 4 www.prisemi.com Transient Voltage Suppressor PTVSHC3D18VU Product dimension (SOD-323) C Dim A E B F D H Inches Millimeters MIN MAX MIN MAX A 0.063 0.075 1.60 1.90 B 0.045 0.057 1.15 1.45 C 0.090 0.106 2.30 2.70 D 0.031 0.043 0.80 1.00 E 0.010 0.01 0.25 0.40 F 0.004 0.007 0.09 0.18 H 0.000 0.004 0.00 0.10 3.00 0.90 0.80 Suggested PCB Layout Unit:mm Ordering information Device Package Reel Shipping PTVSHC3D18VU SOD-323 (Pb-Free) 7" 3000 / Tape & Reel Rev.06.3 5 www.prisemi.com Transient Voltage Suppressor PTVSHC3D18VU IMPORTANT NOTICE and are registered trademarks of Prisemi Electronics Co., Ltd (Prisemi) ,Prisemi reserves the right to make changes without further notice to any products herein. Prisemi makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Prisemi assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in Prisemi data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. Prisemi does not convey any license under its patent rights nor the rights of others. The products listed in this document are designed to be used with ordinary electronic equipment or devices, Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of with would directly endanger human life (such as medical instruments, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. Website: http://www.prisemi.com For additional information, please contact your local Sales Representative. ©Copyright 2009, Prisemi Electronics is a registered trademark of Prisemi Electronics. All rights are reserved. Rev.06.3 6 www.prisemi.com