________________________________________________________________________ http://www.union-ic.com rev.02 jun.2009 1/6 UM5080T low capacitance bidirectional single line tvs protection diode UM5080T dfn2 1.0 0.6 general description the UM5080T tvs protection diode is designed to replace multilayer varistors (mlvs) in portable applications such as cell phones, notebo ok 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 de vice degradation when compared to mlvs. the UM5080T tvs protection diode protects sensitive semiconductor components from damage or upset due to electrostatic discharge (esd) and other voltage induced transient events. the UM5080T is available in dfn2 1.0 0.6 (compatible with sod923/sod882/csp 1.0 0.6) package with working voltages of 5 volt. it gives designer the flexibility to protect bidirectional single line in applications where arrays are not practical. a dditionally, it may be ?sprinkled? around the board in applications where board space is at a premiu m. it may be used to meet the esd immunity requirements of iec 61000-4-2, 30kv air, 30kv contact discharge. applications features cell phone handsets and accessories personal digital assistants (pda?s) notebooks, desktops and servers portable instrumentation cordless phones smart card digital cameras mp3 players transient protection for data lines to iec 61000-4-2 (esd) 30kv (air), 30kv (contact) small package for use in portable electronics suitable replacement for mlv?s in esd protection applications bidirectional tvs protection stand off voltages: 5v low leakage current low diode capacitance small body outline dimensions: 1.0mm0.6mm pin configurations top view UM5080T dfn2 1.0 0.6 ordering information part number working voltage packaging type channel marking code shipping qty UM5080T 5.0v dfn2 1.00.6mm 2 1 p 5000/7 inch tape & reel
________________________________________________________________________ http://www.union-ic.com rev.02 jun.2009 2/6 UM5080T absolute maximum ratings rating symbol value units peak pulse power (tp = 8/20 s) p pk 140 watts maximum peak pulse current (t=8/20 s) i pp 11 amps lead soldering temperature t l 260 (10 sec.) c operating temperature t j -55 to +125 c storage temperature t stg -55 to +150 c symbol definition parameter symbol maximum reverse peak pulse current i pp clamping voltage @ i pp v c working peak reverse voltage v rwm maximum reverse leakage current @ v rwm i r breakdown voltage @ i t v br test current i t peak power dissipation p pk max. capacitance @ v r = 0v, f = 1mhz c j
________________________________________________________________________ http://www.union-ic.com rev.02 jun.2009 3/6 UM5080T electrical characteristics (t=25c, de vice for 5.0v reverse stand-off voltage) parameter symbol condit ions min typ max unit reverse stand-off voltage v rwm 5 v reverse breakdown voltage v br i t = 1ma 6.5 8.5 v reverse leakage current i r v rwm = 5v, t=25c 1 a i pp = 5a, t p = 8/20 s 9.7 clamping voltage v c i pp =11a, t p = 8/20 s 13.6 v junction capacitance c j v r = 0v, f = 1mhz 45 59 pf junction capacitance c j v r = 2.5v, f = 1mhz 35 45 pf typical operating characteristics non-repetitive peak pulse power vs. pulse time clamping voltage vs. peak pulse current 0.04 0.1 1 10 100 1000 0.02 0.1 1 peak pulse power - ppk(kw) pulse duration - tp(us) 024681012 6 7 8 9 10 11 12 13 14 waveform parameters: tr=8us td=20us clamping voltage - vc(v) peak pulse current - ipp(a) junction capacitance vs. reverse voltage 012345 30 35 40 45 50 junction capacitance(pf) reverse voltage (v)
________________________________________________________________________ http://www.union-ic.com rev.02 jun.2009 4/6 UM5080T applications information device connection options UM5080T esd protection diode is designed to protec t one bidirectional data , i/o or power supply line from the damage caused by esd and surge pu lses. the device is bidirectional and may be used on lines where the signal polarity is above ground and below ground. circuit board layout recommendations for suppression of esd good circuit board layout is critical for the s uppression of esd induced transients. the following guidelines are recommended: 1. place the tvs near the input terminals or conn ectors to restrict transient coupling. 2. minimize the path length between the tvs and the protected line. 3. minimize all conductive loops including power and ground loops. 4. the esd transient return path to ground should be kept as short as possible. 5. never run critical signals near board edges. 6. use ground planes whenever possible. for mu ltilayer printed-circuit boards, use ground vias. 7. keep parallel signal paths to a minimum. 8. avoid running protection conductors in parallel with unprotected conductor. 9. avoid using shared transient return paths to a common ground point.
________________________________________________________________________ http://www.union-ic.com rev.02 jun.2009 5/6 UM5080T package information UM5080T dfn2 1.00.6 outline drawing millimeters inches symbol min max min max a 0.350 0.450 0.014 0.018 a1 0.000 0.050 0.000 0.002 b 0.190 0.300 0.007 0.012 d 0.950 1.075 0.037 0.042 e 0.550 0.675 0.022 0.027 e1 0.340 0.550 0.013 0.022 e 0.650 0.026 r 0.050 0.150 0.002 0.006 note: r is optional. land pattern notes: 1. compound dimension: 1.000.60 2. unit: mm; 3. general tolerance 0.025 mm unless otherwise specified; 4. the layout is just for reference. tape and reel orientation
________________________________________________________________________ http://www.union-ic.com rev.02 jun.2009 6/6 UM5080T important notice the information in this document has been carefully reviewed a nd is believed to be accurate. nonetheless, this document is subject to change without notice. union assumes no responsibility for any inaccuracies that may be contained in th is document, and makes no commitment to update or to keep current the contained information, or to notify a person or organization of any update. union reserves the right to make changes, at any time, in order to improve reliability, function or design and to attempt to supply the best product possible. union semiconductor, inc add: 7f, no. 5, bibo road, shanghai 201203 tel: 021-51097928 fax: 021-51026018 website: www.union-ic.com
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