1 www.protekdevices.com 05138.r3 9/02 smf05c thru smf24c subminature monolithic tvs arra ys applica tions ? notebook computers ? cellular phone base stations ? handheld electronics ? personal digital assistants (pdas) ? digital cameras iec compa tibility (en61000-4) ? 61000-4-2 (esd): air - 15kv, contact - 8kv ? 61000-4-4 (eft): 40a - 5/50ns fea tures ? esd protection > 25 kilovolts ? 100 watts peak pulse power dissipation per line (8/20s) ? low clamping voltage ? available in 4 voltage types ranging from 5v to 24v ? up to five (4) lines of bidirectional protection & five (5) lines of unidirectional protection mechanical characteristics ? molded jedec sc-70-6l ? weight 0.014 grams (approximate) ? flammability rating ul 94v-0 ? 8mm tape and reel per eia standard 481 ? device marking: marking code sc-70-6l 3 1 5 6 2 4 pin configura tion circuit diagram 13 4 5 6 2 05138 . . . engineered solutions for the transient environment?
2 www.protekdevices.com smf05c thru smf24c 05138.r3 9/02 device characteristics maximum ratings @ 25c unless otherwise specified operating temperature symbol value -55 c to 150 cc c -55 c to 150 c units t j t stg parameter storage temperature peak pulse power (t p = 8/20s) - see figure 1 p pp 100 watts 0.01 1 10 100 1,000 10,000 t d - pulse duration - s 0 5 10 15 20 25 30 t - time - s 0 20 40 60 80 100 120 i pp - peak pulse current - % of i pp test waveform parameters t f = 8s t d = 20s t f peak value i pp e -t t d = t i pp /2 figure 2 pulse wave form 10 100 1,000 10,000 p pp - peak pulse current - watts figure 1 peak pulse power vs pulse time 100w, 8/20s waveform electrical characteristics per line @ 25c unless otherwise specified pa rt number device marking minimum breakdown voltage @ 1ma v (br) volts maximum clamping voltage (see fig. 2) @ i p = 5a v c volts maximum clamping voltage (see fig. 2) @8/20s v c @ i pp typical capacitance (see note 1) 0v @ 1 mhz c pf smf05c smf12c smf15c smf24c 05c 12c 15c 24c 6.0 13.3 16.7 26.7 9.8 - - - 10.0v @ 10.0a 23.8v @ 4.2a 33.3v @ 3.0a 55.5v @ 1.8a 60 30 25 20 maximum leakage current @v wm i d a 5 1 1 1 rated stand-off voltage v wm volts 5.0 12.0 15.0 24.0 note 1: pins 1, 3, 4, 5 or 6 to pin 2.
3 www.protekdevices.com smf05c thru smf24c 05138.r3 9/02 graphs 0 25 50 75 100 125 150 t l - lead temperature - c 20 40 60 80 100 % of rated power peak pulse power 8/20s average power figure 3 power derating curve 0 smf05c 0 2 4 6 8 10 i pp - peak pulse current - amps v c - clamping voltage - volts 0 4 8 12 16 figure 4 typical clamping voltage vs peak pulse current
4 www.protekdevices.com smf05c thru smf24c 05138.r3 9/02 application notes the smfc series are tvs arrays designed to protect i/o or data lines from the damaging effects of esd (> 25kv) or eft. this pr oduct provides both unidirectional and bidirectional protection, with a surge capability of 100 watts p pp per line for an 8/20s waveshape. unidirectional common mode configuration (figure 1) the smfc series provides up to four (4) lines of protection in a common mode configuration as depicted in figure 1. circuit connectivity is as follows: ? line 1 is connected to pin 1. ? line 2 is connected to pin 3. ? line 3 is connected to pin 4. ? line 4 is connected to pin 6. ? pin 2 is connected to ground. bidirectional differential mode configuration (figure 1) the smfc series provides up to five (5) lines of protection in a differential mode configuration as depicted in figure 2. circuit connectivity is as follows: ? line 1 is connected to pin 1. ? line 2 is connected to pin 3. ? line 3 is connected to pin 4. ? line 4 is connected to pin 5. ? line 5 is connected to pin 6. ? pin 2 is not connected. circuit bo ard la y out recommend a tions circuit board layout is critical for electromagnetic compatibility (emc) protection. the following guide- lines are recommended: ? the protection device should be placed near the input terminals or connectors, the device will divert the transient current immediately before it can be coupled into the nearby traces. ? the path length between the tvs device and the protected line should be minimized. ? all conductive loops including power and ground loops should be minimized. ? the transient current return path to ground should be kept as short as possible to reduce parasitic inductance. ? ground planes should be used whenever possible. for multilayer pcbs, use ground vias. 3 1 5 6 2 4 figure 2 - bidirectional configuration differential-mode i/o port protection line 1 line 2 line 3 line 4 i/o port line 5 figure 1 - unidirectional configuration common-mode i/o port protection 3 1 5 6 2 4 line 1 line 2 line 3 line 4 i/o port
5 www.protekdevices.com smf05c thru smf24c 05138.r3 9/02 copyright ? protek devices 2001 specifications: protek reserves the right to change the electrical and or mechanical characteristics described herein without notice (except jedec). design changes: protek reserves the right to discontinue product lines without notice, and that the final judgement concerning selection and specifications is the buyer ? s and that in furnishing engineering and technical assistance, protek assumes no responsibility with respect to the selection or specifications of such products. package outline & dimensions 7 06019 rev 1 - 11/01 e d a l f 54 3 6 b g v j c k 0 o - 8 o 1 2 m j a b c d e f g j k l m 1.90 1.15 0.80 0.15 0.65 bsc 1.30 bsc 0.80 0.08 2.00 0 0.26 2.15 1.35 1.00 0.30 - - 1.10 0.25 2.20 0.10 0.46 0.074 0.045 0.031 0.006 0.0255 bsc 0.0512 bsc 0.031 0.003 0.078 0 0.010 0.084 0.055 0.040 0.012 - - 0.043 0.010 0.086 0.004 0.018 dim min max min max millimeters inches package dimensions notes: 1. dimensioning and tolerances per ansi y14.5m, 1985. 2. controlling dimension: inches 3. dimensions are exclusive of mold flash and metal burrs. package outline sc70-6l mounting pad 4 6 0.020 0.051 0.026 0.094 0.024 0.028 0.098 1 2 3 4 5 6 7 0.50 1.30 0.65 2.40 0.60 0.70 2.50 dim millimeters i nches typical 5 3 2 1 protek devices 2929 south fair lane, tempe, az 85282 tel: 602-431-8101 fax: 602-431-2288 e-mail: sales@protekdevices.com web site: www.protekdevices.com p ar t number suffixes used for t ape & reel ordering: surface mount product is taped and reeled in accordance with eia-481. suffix-t7 = 7 inch reel - 3,000 pieces per reel i.e.: smf05c - t7 suffix-t13 = 13 inch reel - 10,000 pieces per reel i.e: smf05c - t13
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