features laser trimmed temperature stable general information the pca and pcaa series consists of a laser trimmed distrib- uted thin film element on an alumina ceramic substrate with solderable terminals. two sizes are available. the pca size operates to 12.4 ghz and the pcaa size operates to 18.0 ghz. both sizes are available with leads and wrap around conduc- tors for ease of installation. the pcaf and pcaaf options are designed for ?lip-chip?application in lower frequency circuits. pca & pcaa series data substrate: 96% alumina solderable terminals: electroplated silver over nickel resistive element: proprietary thin film wrap around ground terminal available, ??option wrap around-all terminalsf?option standard values 1, 2, 3, 4, 5, 6, 10, 20 db non-std. values available as special order ordering information the attenuators listed are available in 1 db increments from 1 through 20 db. when ordering, to specify the correct part num- ber for the desired attenuation value, select any of the series listed and add the attenuation value desired to the basic series designation. options l = lead/tab (gold plated becu) w = wrap around ground only f = wrap around all terminals (flip-chip) t = tinned terminals (any terminal type) g = gold plated terminals series pca, pcaa attenuators, chip low power ?dc-18 ghz notes 1. performance of other db values vary dependent on attenuation. contact factory for specifications for fractional db values. 2. performance is based on device mounted in matched 50 ohm line. 3. rated power 1.5 watts input pca, 100 mw pcaa. general specifications impedance 50 ohms operating temperature 55 c to +150 c attenuation stability 0.0001 db/db/ c example: examples: pca or pcaa (x) option(s) l w f basic series pcaw-t3 pcaaf-g3 (x) option(s) t g db value average power derating curve 25 100 75 50 25 0 85 150 c power derating % of rated power attenuation attenuation accuracy (db) note 2 vswr (typical) note 2 increments dc - 4 ghz 4 - 8 ghz 8 - 12.4 ghz 12.4 - 18 ghz dc - 4 ghz 4 - 8 ghz 8 - 12.4 ghz 12.4 - 18 ghz (db) pca, pcaa pca, pcaa pca, pcaa pcaa pca, pcaa pca, pcaa pca, pcaa pcaa note 1 series series series series only series series series series only 1 - 3 0.5 0.5 0.5 0.5 1.25 1.35 1.50 1.50 4 - 6 0.5 0.5 0.5 0.75 1.25 1.35 1.50 1.50 7 - 10 0.5 0.5 0.75 1.0 1.25 1.35 1.50 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 performance specifications rev 3/05 key : inches [millimeters] .xx .03 .xxx .010 [.x 0.8 .xx 0.25]
series pca, pcaa attenuators, chip low power dc-18 ghz kdi-resistor products 60 south jefferson road, whippany, nj 07981 tel: 973-887-8100 fax: 973-884-0445 www.aeroflex-kdi.com sales@aeroflex-kdi.com key : inches [millimeters] .xx .03 .xxx .010 [.x 0.8 .xx 0.25] physical dimensions pca pcaa pcaal (lead/cover) pcal (lead/cover) pcaw (wrap around ground terminal only) pcaf (wrap around all terminals) pcaaf (wrap around all terminals) pcaaw (wrap around ground terminal only) .025[0.64] min .060[1.52] typ. .015[0.38] min .150 [3.8] .010 [0.25] ground .125 [3.18] .150 [3.8] .125 [3.18] .250[6.4] min .060 .003 [1.52 0.08] typ. .003 .001 [0.08 0.03] .040[1.02] max .060[1.52] typ. .015[0.38] min .150 [3.8] .125 [3.18] .010 [0.25] .025[0.64] min .125 [3.18] .025 min [0.64] .060[1.52] typ. .015[0.38] min .150 [3.8] .010 [0.25] wrap around ground wrap around ground maximum frequency 4 ghz maximum frequency 8 ghz .025[0.64] typ. .015[0.38] min .075 [1.9] .010 [0.25] ground .060 [1.52] .020[0.5] typ. .020[0.5] typ. .025[0.64] typ. .015[0.38] min .075 [1.9] .010 [0.25] wrap around ground .060 [1.52] .020[0.5] typ. .025[0.64] typ. .015[0.38] min .075 [1.9] .010 [0.25] wrap around ground .060 [1.52] .075 [1.9] .060 [1.52] .250[6.4] min .020 .003 [0.5 0.08] typ. .003 .001 [0.08 0.03] .040[1.02] max
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