PESDHC3D12VU

PESDHC3D12VU ESD Protector Description The PESDHC3D12VU ESD protector 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 PESDHC3D12VU protects sensitive semiconductor components from damage or upset due to electrostatic discharge (ESD) and other voltage induced transient events. The PESDHC3D12VU is available in a SOD-323 package with working voltages of 12 volt. It gives designer the flexibility to protect one unidirectional line in applications where arrays are not practical. Additionally, it may be “ sprinkled” around the board in applications where board space is at a premium. It may be used to meet the ESD immunity requirements of IEC 61000-4-2, (±30kV air, ±30kV contact discharge) Feature Applications  500W peak pulse power per line (tP = 8/20μs)  Cell phone handsets and accessories  SOD-323 package  Personal digital assistants (PDA’s)  Replacement for MLV(0805)  Notebooks, desktops, and servers  Unidirectional configurations  Portable instrumentation  Response Time is Typically < 1 ns  Cordless phones  Protect one I/O or power line  Digital cameras  Low clamping voltage  Peripherals  RoHS compliant  MP3 players  Transient protection for data lines to IEC 61000-4-2(ESD) ±30KV(air), ±30KV(contact); IEC 61000-4-4 (EFT) 40A (5/50ns) 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.06.5 1 www.prisemi.com ESD Protector PESDHC3D12VU Electronics Parameter Symbol VRWM IR Parameter IF Peak Reverse Working Voltage I Reverse Leakage Current @ VRWM VBR 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 Working Voltage Symbol Conditions Min. Typ. VRWM Breakdown Voltage Max. Units 12 V VBR It =1mA Reverse Leakage Current IR VRWM =12V Forward Voltage VF IF =10mA Clamping Voltage VC IPP=5A tP = 8/20μS 19.0 V Clamping Voltage VC IPP=20A tP = 8/20μS 27.0 V Junction Capacitance Cj VR=2.5V 13.5 V 1 μA 0.8 f = 1MHz V 100 pF Absolute maximum rating@25℃ Rating Symbol Value Units Unidirectional Peak Pulse Power (tp=8/20μS) Ppp 500 W Maximum Peak Pulse Current ( tP = 8/20μS ) Ipp 20 A Lead Soldering Temperature TL 260 (10 sec) ℃ Operating Temperature TJ -55 to +125 ℃ TSTG -55 to +150 ℃ Storage Temperature Rev.06.5 2 www.prisemi.com ESD Protector PESDHC3D12VU tf=8μs 100 IPP – Peak Pulse Current - % of 100 80 60 % Of Rated Power IPP Typical Characteristics tP =20μs(IPP /2) 40 80 60 40 20 20 0 0 5 10 15 20 25 0 30 0 25 50 t - Time -μs 75 100 125 150 TL – Lead Temperature - ℃ Fig 1.Pulse Waveform Fig 2.Power Derating Curve 10000 30 Pulse waveform: tp=8/20us 1000 VC-Clamping Voltage (V) Peak Pulse Power (W) 25 100 20 15 10 5 10 1 10 100 Pulse Duration(us) 1000 0 10 15 20 IPP-Peak pulse current(A) Fig 3. Non Repetitive Peak Pulse Power vs. Pulse time Rev.06.5 5 Fig 4. Clamping voltage vs. Peak pulse current 3 www.prisemi.com 25 ESD Protector PESDHC3D12VU 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.06.5 4 www.prisemi.com ESD Protector PESDHC3D12VU 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 Unit:mm Suggested PCB Layout Marking information 6U Ordering information Device Package Reel Shipping PESDHC3D12VU SOD-323 (Pb-Free) 7" 3000 / Tape & Reel Rev.06.5 5 www.prisemi.com ESD Protector PESDHC3D12VU 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.06.5 6 www.prisemi.com