14100 mccormick drive tampa, fl 33626 866.tech.emi (866.832.4364) t: 813.855.6921 f: 813.855.3291 www .leadertechinc.com the leading source for emi shielding reliable board, enclosure and cable solutions radio frequencies emanating from electronic components such as the printed circuit board sketch at the right are addressed in three ways:sometimes no shielding is required; a reflective shield in the form of a local cover for the components, or the entire electronic enclosure can be fitted up as a shield; an absorber pad shield which soaks up the rf and converts it to imperceptible heat energy. the latter absorber shield method deals with the unwanted rf energy right at the source and prevents re-radiation and reflection of the signals so that neighboring components are unaffected; also, second, third and fourth order harmonics are nullified or greatly minimized. electromagnetic radio wave absorbers 40mhz to 5ghz: ea series. the ea series is a high frequency noise absorber in a range of formulations addressing 40mhz to 5ghz radiationsfrom electronic components. it has a multi-layered structure of screened coating matrixes adjusted for discrete impedance matching to absorb electromagnetic waves at various peak frequencies depending on which of the seven different constructions is used. emc wave absorber for pcb components and wire circuits. a quick and easy way to gain 1 to 2 db without invasive circuit changes. the ea3200h rf absorber matrix provides a measurable effect from 40mhz to 5ghz depending on frequency, existing circuit load, and area covered by the patch ? . peak performance is at 3.2ghz to 5.0ghz. installs simply by removing protective adhesive liner . convenient 6.00x 8.00 (152 x 203mm) sheets with (24) patches per sheet. shielding patches ? 40mhz to 5ghz @ 3.2ghz peak. this all-around universal wideband formula is available in a standard temperature type and a hightemperature type (up to 200?c). excellent performance from 40mhz to 5ghz. extra wideband series applications: pcbs, pcb components, electronic enclosures, shielded boxes, all microprocessor based electronic, edp , telecom, scientific, medical, architectural shielding, rf test chambers, shielded facilities typical shielding approach allows reflected radiation to affect neighboring components. noise absorber approach assimilates radiated frequencies and converts to imperceptible heat energy. typical absorption rate ea3200 8.25 209,6 15.75 400,0 .005 0,13 40 mhz to 5 ghz 3.2 ghz @ -31.3 db ea3200h (hi temp) 8.25 209,6 15.75 400,0 .005 0,13 40 mhz to 5 ghz 3.2 ghz @ -31.3 db p art no. width length* thickness frequency range peak frequency Cattenuation frequency range 40 mhz - 5 ghz peak frequency 3.2 ghz temperature range -20?c to 100?c and -10?c to 200?c (high temp) flammability rating ul94-v0 adhesive: standard temp. 0?f to 180?f -18?c to 83?c astm d-3575 high temp. 50?f to 312?f 10?c to 200?c astm d-3575 tack 8.4 p.s.i. (stainless steel standard) astm d-3575 8.3 p.s.i. (stainless steel high temperature) astm d-3575 shear 300+ hrs. @ 2 p.s.i. @ 22?c astm d-3575 dimensions: standard 8.25w x 15.75 ? x .004max. 209,6 x 400,0 x 0,10 maximum 3-? x 65?0- x .004max 1,0 x 20,0 m x 0,10 material characteristic measure *a v ailab le in standard rolls 8.25 210mm x 65- 20m ea3200h-sp12 1.00 25,4 1.937 49,2 .005 0,13 40mhz - 5ghz: peak @ 3.2ghz @ -31.2db part no. a b c frequency Cattenuation * signifies high temper ature v ersion. see specifications abo v e. absorbers shown in use below and above printed circuit board. reflective shield absorber shield absorber shield absorber shield absorption rate (-db) -35 -25 -15 5 0 ea3200 and ea3200h frequency ghz 5 4 3 2 1 0 reflective shield absorber shield absorber shield absorber shield a c b *adhesive liner .003(0,076) w/o adhesive liner
14100 mccormick drive tampa, fl 33626 866.tech.emi (866.832.4364) t: 813.855.6921 f: 813.855.3291 www .leadertechinc.com the leading source for emi shielding reliable board, enclosure and cable solutions the following data displays the insertion loss characteristics of each formula of absorber material by part number . of particular interest in engineering a given application is the peak absorption frequency and its correlation to the part number nomenclature; i.e., the peak frequency of the ea300 material is 300mhz. of course, any of theformulations can be used for neighboring frequencies Cin the case of ea300, a logical selection can be made for 200mhz or 400mhz situations. note that laminations of multiple part numbers will effectively yield a combination of results. typical absorption rate by part number emc standar d series: typical absorption rate by par t number EA100 15.75 400,0 15.75 400,0 .002 0,05 -5 db min. @ 50 mhz to 1 ghz 100 mhz @ -17.3 db ea300 15.75 400,0 15.75 400,0 .007 0,18 -5 db min. @ 50 mhz to 1 ghz 300 mhz @ -17.6 db ea400 15.75 400,0 15.75 400,0 .012 0,30 -5 db min. @ 50 mhz to 1 ghz 400 mhz @ -17.2 db ea500 15.75 400,0 15.75 400,0 .020 0,50 -5 db min. @ 50 mhz to 1 ghz 500 mhz @ -17.8 db ea800 15.75 400,0 15.75 400,0 .014 0,36 -5 db min. @ 50 mhz to 1 ghz 800 mhz @ -17.9 db p art no. width length* thickness frequency range peak frequency Cattenuation frequency range 50 mhz - 1 ghz peak frequency choices 100, 300, 400, 500 or 800 mhz temperature range -20?c to 100?c flammability rating ul94-v0 adhesive: temperature 0?f to 180?f -18?c to 83?c astm d-3575 tack 8.4 p.s.i. (stainless steel) astm d-3575 shear 300+ hrs. @ 2 p.s.i. @ 22?c astm d-3575 dimensions: standard 15.75w x 15.75 ? x .020max. 400,0 x 400,0 x 0,50 maximum 3-? x 65?0- x .020max 1,0 x 20,0 m x 0,50 material characteristic measure standard series C50 mhz to 1 ghz *a vailable in standard rolls 15.75 400mm x 65- 20m a b s o r p t i o n r a t e ( - d b ) 20 1 5 1 0 5 0 e a100 frequency ghz 2.5 2 .0 1 .5 1 .0 0 .5 0 .1 a b s o r p t i o n r a t e ( - d b ) 20 1 5 1 0 5 0 e a300 frequency ghz 2.5 2 .0 1 .5 1 .0 0 .5 0 .1 a b s o r p t i o n r a t e ( - d b ) 20 15 10 5 0 ea400 frequency ghz 2.5 2 .0 1 .5 1 .0 0 .5 0 .1 a b s o r p t i o n r a t e ( - d b ) 20 15 10 5 0 ea500 frequency ghz 2.5 2 .0 1 .5 1 .0 0 .5 0 .1 a b s o r p t i o n r a t e ( - d b ) 20 15 10 5 0 ea800 frequency ghz 2.5 2 .0 1 .5 1 .0 0 .5 0 .1
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