PESDUC2FD3V3U

PESDUC2FD3V3U Uni-directional 3.3V Ultra Small Capacitance ESD Protector Description The PESDUC2FD3V3U 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 PESDUC2FD3V3U protects sensitive semiconductor components from damage or upset due to electrostatic discharge (ESD) and DFN1006-2L(Bottom View) other voltage induced transient events. The PESDUC2FD3V3U is available in a DFN1006-2L package with working voltages of 3.3 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. Feature  Ultra low capacitance 0.5pF  DFN1006-2L package  Replacement for MLV(0402)  Unidirectional configurations  Response time is typically < 1 ns  Protect one I/O or power line  Low clamping voltage  RoHS compliant  Transient protection for data lines to Pin 2 Pin 1 Circuit Diagram IEC 61000-4-2(ESD)±25kV (air), ±25kV (contact); Applications  Cell phone handsets and accessories  Personal digital assistants (PDA’s)  Notebooks, desktops, and servers  Portable instrumentation  Cordless phones  Digital cameras  Peripherals  MP3 players 3U Marking (Top View) Mechanical Characteristics  DFN1006-2L without plating  Mounting position: Any  Qualified max reflow temperature:260℃  Device meets MSL 1 requirements Rev.06.3 1 www.prisemi.com Ultra Small ESD Protector PESDUC2FD3V3U Electronics Parameter Symbol Parameter VRWM Peak Reverse Working Voltage I IF IR 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 Symbol Conditions Peak Reverse Working Voltage VRWM Breakdown Voltage VBR It =1mA Reverse Leakage Current IR VRWM =3.3V Forward Voltage VF IF =10mA Clamping Voltage VC IPP=1A Clamping Voltage VC IPP=5A Junction Capacitance Cj Min. Typ. Max. Units 3.3 V 4.5 V 1.0 μA 0.8 1.2 V tP = 8/20μS 8.0 10.0 V tP = 8/20μS 11.0 13.0 V f = 1MHz 0.50 0.80 pF VR=0V Absolute maximum rating@25℃ Rating Symbol Value Units Peak Pulse Power (tp=8/20μs) Ppp 55 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 Ultra Small ESD Protector PESDUC2FD3V3U tf=8μs 100 100 80 60 80 % Of Rated Power IPP – Peak Pulse Current - % of IPP Typical Characteristics tP =20μs(IPP /2) 40 60 40 20 20 0 0 5 10 15 20 25 0 30 0 25 t - Time -μs 50 75 100 125 Fig 1.Pulse Waveform Fig 2.Power Derating Curve 1.0 20 f = 1MHz C - Junction Capacitance - pF VC - Clamping Voltage - V Pulse waveform: tp=8/20us 15 10 5 0 150 TL – Lead Temperature - ℃ 0.8 0.6 0.4 0.2 0 1 2 3 4 0.0 0.0 5 0.5 1.0 1.5 2.0 2.5 3.0 IPP - Peak pulse current - A VR - Reverse voltage - V Fig 3. Clamping voltage vs. Peak pulse current Fig 4. Capacitance vs. Reveres voltage 3.5 1000 16 14 Peak Pulse Power (W) Current (A) 12 10 8 6 4 100 10 2 1 0 0 2 4 6 8 10 Voltage 12 (V) 14 16 18 20 1 Fig 5. TLP Measurement Rev.06.3 10 100 Pulse Duration(us) 1000 Fig 6. Non Repetitive Peak Pulse Power vs. Pulse time 3 www.prisemi.com Ultra Small ESD Protector PESDUC2FD3V3U 12V/div 10V/div 20nS/div 20nS/div Fig 7. ESD clamping voltage Fig 8. ESD clamping voltage (IEC61000-4-2 +8KV contact) Rev.06.3 (IEC61000-4-2 -8KV contact) 4 www.prisemi.com Ultra Small ESD Protector PESDUC2FD3V3U Solder Reflow Recommendation Preliminary Heating 300 Soldering Cooling(in air) Temperature of Soldering 260℃ (+0,-5℃) 250 245℃ (+0,-5℃) 200 150 120℃ 100 100℃ 50 0 2 to 5 min more than 1 min Less than 10s Remark: Pb free for 260℃；Pb for 245℃. 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 5 www.prisemi.com Ultra Small ESD Protector PESDUC2FD3V3U Product dimension (DFN1006-2L) Inches A Millimeters Dim B C R D E MIN MAX MIN MAX A 0.013 0.020 0.34 0.498 B 0.000 0.002 0.00 0.05 C 0.037 0.043 0.95 1.080 D 0.022 0.027 0.55 0.680 E 0.016 0.024 0.40 0.60 F 0.008 0.012 0.20 0.30 H 0.015Typ. R F 0.001 0.40Typ. 0.005 0.05 0.15 H 1.20 0.50 0.60 0.70 Unit:mm Suggested PCB Layout Ordering information Device Package Reel Shipping PESDUC2FD3V3U DFN1006-2L (Pb-Free) 7" 10000 / Tape & Reel Rev.06.3 6 www.prisemi.com Ultra Small ESD Protector PESDUC2FD3V3U Load with information USER DIRECTION OF FEED Φ1.50 ± 0.10 2.00 ± 0.05 2.00 ± 0.05 4.00 ± 0.10 1.75 ± 0.10 3.50 ± 0.05 8.00 ± 0.10 Φ0.50 ± 0.05 3U Rev.06.3 7 www.prisemi.com Ultra Small ESD Protector PESDUC2FD3V3U 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 8 www.prisemi.com