ims tel (401) 683-9700 fax (401) 683-5571 e-mail: ims@ims-resistors.com http://www.ims-resistors.com international manufacturing services, inc. iax series surface mount thick film attenuator iax series surface mount thick film attenuators are compact, high performance devices especially suited to rf and microwave applications. for bondable terminations, other substrate thicknesses or other sizes and power levels, consult the factory. other case sizes and values are available upon request 1 and are often delivered in half the lead times of most competitors. iax series case dimensions power rating 2 0706 0.075? x 0.060? x 0.020? max 300mw 0805 0.080? x 0.050? x 0.020? max 400mw 1206 0.126? x 0.063? x 0.020? max 1w 2010 0.197?? x 0.097?? x 0.028?? max 3w 2512 0.248? x 0.126? x 0.028? max 5w 3725 0.375? x 0.250? x 0.028? max 15w iax series specifications impedance: 50 nominal vswr (max) 3 : 1.3:1 up to 18 ghz dc attenuation stability: .0001db/ db/ deg. c 4 operating temperature: -55 deg. c. to 150 deg. c. attachment: solder or epoxy architecture: thick film on 96% alumina (al 2 o 3 ) attenuation accuracy (dc) increment accuracy (db) 1 - 3 +/- 0.2db 4 - 13 +/- 0.3db 13 - 70 +/- 0.5db i mpossible m ade s imple ? 1 consult factory 2 with 100 deg. c baseplate 3 mounted in a matched continuous 50 ohm system 4 based on tcr and resistor tolerance at dc 5 groundpads must be shorted during assembly iax ver 4 5/2008 specifications subject to change without notice to 70db to 0.2db accuracy to 15w input power input / output input / output wraps to groundpad bac k of chip suggested footprint (see footnote 5) groundpad groundpad input / output input / output groundp ad suggested footprin t (see f oo tnot e 5) bac k of chip input / output input / output wra ps to g rou ndpad groundp ad wa style sg style sample p/n: ia3-1206sg02d5 prefix for attenuators screened on alumina termination metallization: -3 ptag -c ptag w/ solder db increment (d0 denotes whole value) -or- (d5 denotes whole value + .5db available up to 16.5db) db whole value (00-70) termination style: -sg single wrap to groundplane -wa wraparound -ss single sided (0706 only) case size: 0706 1206 2512 0805 2010 3725 input / outpu t input / output terminals to be shorted sugg ested footprint mount face do wn input / output input / output (to shor t top ter minals) ss style top top top back back board board board
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