k di-resistor produc ts 60 south jefferson road, whippany, nj 07981 tel: 973-887-8100 ? fax: 973-560-1372 w ww.aeroflex.com/kdi-resistor ? kdi-resistor-sales@aeroflex.com key : inches [millimeters] .xx .03 .xxx .010 [.x 0.8 .xx 0.25] features ? laser trimmed ? 100% tested ? temperature stable ? fixtures available general information the psa series attenuators are pill devices designed for installation in stripline circuits. the element is a thin film laser trimmed chip, en-capsulated in an epoxy. the resilient spring configuration provides positive ground plane contact, regard- less of variations in ground plane spacing tolerances. the psa series attenuators are ideal for high-rel applications. ordering information the attenuators are available in 1 db increments from 1 through 20 db. specif y desired attenuation value by adding the attenuation value to the basic series designation. (see note 4) series psa attenuators pill, drop-in C dc-12.4 ghz notes 1. performance of other db values vary dependent on attenuation. contact factor y for specifications for fractional db values. 2. performance is typical and based on device mounted in matched 50 ohm line. 3. rated power 1.5 watts input. 4. standard values 1, 2, 3, 4, 5, 6, 10, 20 db. non-std values available as special order. general speci fications impedance 50 ohms operating temperature -55 c to +150c substrate 96% alumina resistive element proprietary thin film case, cap & tabs copper, gold plated per mil-g-45204 .020[0.51] offset .250[6.4] min +.005[0.13] ?.002[0.05] .250[6.4] .060[15.2] minimum expanded height .140[3.56] .003 .001[0.08 0.03] maximum compressed height .121[3.07] psa resilient housing physical dimensions average power derating curv e 25 100 75 50 25 0 85 150 c power derating case temperature (see note 3) % of rated power e xample: psa ? x d b val ue basic series attenuation attenuation accuracy (db) note 2 vswr (typical) note 2 increment (db) notes 1,4 dc-4 ghz 4-8 ghz 8-12.4 ghz dc-4 ghz 4-8 ghz 8-12.4 ghz 1 -3 0.5 0.5 0.5 1.25 1.35 1.50 4 - 6 0.5 0.5 0.5 1.25 1.35 1.50 7 - 10 0.5 0.5 0.75 1.25 1.35 1.50 11 - 15 0.75 +0.5 +0.5 1.25 1.35 1.50 ?3.0 ?4.0 16 - 20 1.0 +0.5 ? 1.25 1.35 ? ?4.0 1.25 1.35 ? performance specifications rev 3/09 rohs
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