varistor products ?2010 littelfuse, inc. revision: august 10, 2010 mln surgearray? suppressor surface mount multilayer varistors (mlvs) > mln series speci?cations are subject to change without notice. please refer to www.littelfuse.com/series/mln.html for current information. mln series mln surgearray? suppressor rohs description the mln surgearray? suppressor is designed to help protect components from transient voltages that exist at the circuit board level. this device provides four independent suppressors in a single leadless chip in order to reduce part count and placement time as well as save space on printed circuit boards. surgearray? devices are intended to suppress esd, eft and other transients in order to protect integrated circuits or other sensitive components operating at any voltage up to 18v dc . surgearray? devices are rated to the iec 61000-4-2 human body model esd to help products attain emc compliance. the array offers excellent isolation and low crosstalk between sections. the inherent capacitance of the surgearray? suppressor permits it to function as a ?lter/suppressor, thereby replacing separate zener/capacitor combinations. the mln array is manufactured using the littelfuse multilayer technology process and is similar to the littelfuse ml and mle series of discrete leadless chips. features ? rohs compliant ? four individual devices in one chip ? esd rated to iec 61000-4-2 ( level 4) ? ac characterized for impedance and capacitance ? low adjacent channel crosstalk, -55db at 10mhz (typ) ? low leakage ? operating voltage up to 18v m(dc) ? -55oc to 125oc operating temp range ? low-pro?le, pcmcia compatible applications ? data, diagnostic i/o ports ? analog signal/ sensor lines ? portable/hand- held products ? mobile communications/ cellular phones ? computer/dsp products ? industrial instruments including medical size table metric eia 3216 1206 absolute maximum ratings ? for ratings of individual members of a series, see device ratings and speci?cations table. continuous mln series units steady state applied voltage: dc voltage range (v m(dc) ) 5.5 - 18 v operating ambient temperature range (t a ) -55 to +125 oc storage temperature range (t stg ) -55 to +150 oc
varistor products ?2010 littelfuse, inc. revision: august 10, 2010 mln surgearray? suppressor surface mount multilayer varistors (mlvs) > mln series speci?cations are subject to change without notice. please refer to www.littelfuse.com/series/mln.html for current information. device ratings and speci?cations any single section notes: 1. tested to iec61000-4-2 human body model (hbm) discharge test circuit. 2. direct discharge to device terminals (iec preffered test method). 3. corona discharge through air (represents actual esd event) 4. capacitance may be customized, contact sales. part number maximum ratings (125 oc ) speci?cations (25 oc ) maximum continuous working voltage maximum non- repetitive surge current (8/20 s) maximum non- repetitive surge energy (10/1000 s) maximum clamping voltage (at noted 8/20 s) current typical esd supression voltage (note1) nominal voltage at 1ma dc test current capacitance at 1 mhz (1v p-p) v m(dc) i tm w tm v c (note 2) 8kv contact (note 3) 15kv air v n(dc) min v n(dc) max (note 4) c peak clamp peak typ max (v) (a) (j) (v) (v) (v) (v) (v) (v) (pf) (pf) v5.5mln41206 5.5 30 0.10 15.5 at 2a 60 35 45 7.10 10.8 430 520 v9mln41206 9.0 30 0.10 23.0 at 2a 95 50 75 11.0 16.0 250 300 v14mln41206 14.0 30 0.10 30.0 at 2a 110 55 85 15.9 20.3 140 175 v18mln41206 18.0 30 0.10 40.0 at 2a 165 63 100 22.0 28.0 100 125 v18mln41206l 18.0 30 0.05 50.0 at 1a 200 95 130 25.0 35.0 45 75 peak current and energy derating curve for applications exceeding 125oc ambient temperature, the peak surge current and energy ratings must be reduced. 100 90 80 70 60 50 40 30 20 10 0 -55 50 60 70 80 90 100 110 120 130 140 150 percent of rated value ambient temperature ( o c) t t 1 t 2 100 90 50 10 o 1 time percent of peak value peak pulse current test waveform for clamping voltage equivalent series resistance impedance vs frequency, 1206 size 0.1 1 10 100 1000 10000 0.1 1 10 100 1000 frequency (mhz) impeance |z| ( ) v5.5 v9 v14 v18 v18l 1000 1mhz frequency ohms 100 10 1 0.1 10mhz 100mhz 1ghz 10ghz typical performance curves 0 1 = virtual origin of wave t = time from 10% to 90% of peak t 1 = rise time = 1.25 x t t 2 = decay time (impulse duration) example: for an 8/20 s current waveform: 8 s = t 1 = rise time 20 s = t 2 = virtual time to half value figure 1 figure 2 figure 3 figure 4
varistor products ?2010 littelfuse, inc. revision: august 10, 2010 mln surgearray? suppressor surface mount multilayer varistors (mlvs) > mln series speci?cations are subject to change without notice. please refer to www.littelfuse.com/series/mln.html for current information. mln series 0.1 1 10 100 0 0 0 0 1 0 0 0 1 0 0 1 0 1 square wave impulse duration (s) surge current (a) 2 number of surges 1 10 100 10 10 4 10 5 10 6 3 nominal voltage stability to iec 1000-4-2 (8kv contact method, one section) 0 5 10 15 20 25 0 10 100 1000 10000 number of discharges nominal voltage v nom (v) v18 v14 v9 v5.5 v-i characteristic, 1206 size 1 10 100 10a 100a 1ma 10ma 100ma 1a 10a 100a current (a) varistor voltage (v) maximum clamp voltage maximum standby v5.5 v9 v14 v18 v18l v5.5 v9 v14 v18 v18l 1206 size pulse rating for long duration surges (any single section) capacitance vs frequency, 1206 size 0 100 200 300 400 500 1000 10 0 10 1 0.1 frequency (mhz) capacitance (pf) v5.5 v9 v14 v18 v18l typical performance curves (continued) adjacent channel crosstalk -120 -100 -80 -60 -40 -20 0 1000 100 10 1 0.1 0.01 0.001 frequency (mhz) crosstalk (db) v5.5 v9 v14 v18 v18l v in = 1v rms z = 50 figure 5 figure 6 figure 7 figure 8 figure 9
varistor products ?2010 littelfuse, inc. revision: august 10, 2010 mln surgearray? suppressor surface mount multilayer varistors (mlvs) > mln series speci?cations are subject to change without notice. please refer to www.littelfuse.com/series/mln.html for current information. lead (pb) soldering recommendations the principal techniques used for the soldering of components in surface mount technology are ir re-?ow and wave soldering. typical pro?les are shown on the right. the recommended solder for the mln suppressor is a 62/36/2 (sn/pb/ag), 60/40 (sn/pb) or 63/37 (sn/pb). littelfuse also recommends an rma solder ?ux. wave soldering is the most strenuous of the processes. to avoid the possibility of generating stresses due to thermal shock, a preheat stage in the soldering process is recommended, and the peak temperature of the solder process should be rigidly controlled. when using a re?ow process, care should be taken to ensure that the mln chip is not subjected to a thermal gradient steeper than 4 degrees per second; the ideal gradient being 2 degrees per second. during the soldering process, preheating to within 100 degrees of the solder's peak temperature is essential to minimize thermal shock. once the soldering process has been completed, it is still necessary to ensure that any further thermal shocks are avoided. one possible cause of thermal shock is hot printed circuit boards being removed from the solder process and subjected to cleaning solvents at room temperature. the boards must be allowed to cool gradually to less than 50oc before cleaning. preheat zone preheat dwell ramp rate <2c/s maximum temperature 230c temperature c time ( minutes ) 250 200 150 100 50 0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 40-80 seconds above 183c time (minutes) 300 250 200 150 100 50 0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 maximum wave 260c second preheat first preheat temperature c re?ow solder pro?le wave solder pro?le figure 10 figure 11
varistor products ?2010 littelfuse, inc. revision: august 10, 2010 mln surgearray? suppressor surface mount multilayer varistors (mlvs) > mln series speci?cations are subject to change without notice. please refer to www.littelfuse.com/series/mln.html for current information. mln series product dimensions (mm) e d a b c part numbering system v 18 1206 packing options* a: capacitance option (no letter): standard l: low capacitance version bulk pack, 2500 pieces h: 7in (178mm) diameter reel, 2500 pieces t: 13in (330mm) diameter reel, 10,000 pieces device size: 1206: 120mil x 60mil device family tvss device maximum dc working voltage ml n series designator n: array w t end termination w: (silver/platinum/palladium) ag/p d /p t multilayer designator 4 number of sections l packaging* device size quantity 13 inch reel ("t" option) 7 inch reel ("h" option) bulk pack ("a" option) 1206 10,000 2,500 2,500 *(packaging) it is recommended that parts be kept in the sealed bag provided and that parts be used as soon as possible when re moved from bags. bl bw w p l t s x dimension 1206 size in mm a 0.890 0.035 b 1.650 0.065 c 2.540 0.100 d 0.460 0.018 e 0.790 0.030 l 0.126 -/+0.008 3.200 -/+0.200 w 0.063 -/+0.008 1.600 -/+0.200 t 0.053 max 1.350 max bw 0.016 -/+0.004 0.410 -/+0.100 bl 0.007 +0.01/- 0.002 0.180 +0.25/-0.050 p 0.030 ref 0.760 ref x 0.045 -/+0.004 1.140 -/+0.100 s 0.015 -/+0.004 0.380 -/+0.100 pad layout demensions chip layout dimensions
varistor products ?2010 littelfuse, inc. revision: august 10, 2010 mln surgearray? suppressor surface mount multilayer varistors (mlvs) > mln series speci?cations are subject to change without notice. please refer to www.littelfuse.com/series/mln.html for current information. k 0 t 1 t 2 d 0 p 0 d 1 p 1 a 0 p 2 b 0 f e w plastic carrier tape embossment top tape 8mm nominal product identifying label 178mm or 330mm dia. reel tape and reel speci?cations symbol description dimensions in millimeters a 0 width of cavity dependent on chip size to minimize rotation. b 0 length of cavity dependent on chip size to minimize rotation. k 0 depth of cavity dependent on chip size to minimize rotation. w width of tape 8 -/+0.2 f distance between drive hole centers and cavity centers 3.5 -/+0.5 e distance between drive hole centers and tape edge 1.75 -/+0.1 p 1 distance between cavity center 4 -/+0.1 p 2 axial distance between drive hole centers and cavity centers 2 -/+0.1 p 0 axial distance between drive hole centers 4 -/+0.1 d 0 drive hole diameter 1.55 -/+0.05 d 1 diameter of cavity piercing 1.05 -/+0.05 t 1 embossed tape thickness 0.3 max t 2 top tape thickness 0.1 max notes : ? conforms to eia-481-1, revision a ? can be supplied to iec publication 286-3
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