SERIES PPA ATTENUATORS High Power - DC-4GHz The Aeroflex/KDI PPA Series of attenuators utilize a Beryllium Oxide chip and thin film technology to provide devices which can dissipate up to 100 watts of R.F. power. The PPA series must be thermally bonded to a heat sink, using the mounting holes provided, in order to operate within the temperature rating indicated. The flange temperatures must not exceed 100C under rated power conditions. GENERAL SPECIFICATIONS ORDERING INFORMATION The Power Attenuators listed are available in 1 dB increments from 1 thru 20 dB. Specify by selecting any of the series listed and add the attenuation value desired to the basic series designation. (See note 3) Desired dB Value Power 50 Ohms Operating Temp. -55 C to +150C Attenuation Stability 0.0001 dB/dB/C PPA 20-10 Basic Series PPA Impedance Substrate Beryllium Oxide Ceramic Resistive Element Proprietary Thin Film Flange Copper, Nickel Plated per QQ-N-290 Tabs Beryllium Copper, Gold Plated per MIL-G-45204 Cover Alumina Ceramic PERFORMANCE SPECIFICATIONS Attenuation(1) 1 dB Increments (dB) Frequency(1) Range PPA 10 11-20 1-20 DC-4 GHz 10 1-10 0.5 1.0 0.5 2.0 1.0 3.0 PPA 20 6-9 10-15 16-20 1-20 DC-4 GHz 20 1-5 0.5 0.5 0.75 1.0 0.5 0.5 1.0 2.0 0.5 1.0 1.5 3.0 PPA 50 1-20 DC-1 GHz 50 0.3 DC-500 MHz 0.5 500 MHz-1 GHz PPA 100 1-20 DC-500 MHz 100 0.5 Model Input Power (Watts) Attenuation Accuracy (1) (dB) DC-1 GHz 1-2.5 GHz dB VSWR (Typical)2 2.5-4 GHz 1.3:1 1.15:1 - DC-1.0 GHz 1.35:1 - 1.0-2.5 GHz 1.50:1 - 2.5-4.0 GHz 1.25:1 - DC-500 MHz 1.50:1 - 500 MHz-1 GHz 1.25:1 - DC-200 MHz 1.50:1 - 200-500 MHz PHYSICAL DIMENSIONS .040 [1.02] x .005.001 THK [0.130.03] NOTES 1. Custom products .116 [2.95] DIA. are available at higher MIN. frequencies .125 [3.18] TYP with optimized VSWR and attenuation accuracy over narrow frequency .100 [2.54] bandwidths. 2. VSWR as measured in a 0.125" ground plane stripline circuit. 3. Standard values 1, 2, 3, 4, 5, 6, 10, 20 dB. Non-std values available as special order. .160 [4.06] MAX. .003.001 [0.080.03] .375 [9.52] .060 [1.52] TYP .175 [4.45] .171 [4.34] .125 [3.18] THRU 2 PLS .300 [7.62] .100 [2.54] .200 [5.08] .062 [1.58] .375 [9.53] .250 [6.35] MIN TYP .125 [3.18] .105 [2.67] .725 [18.42] .110 [2.79] .975 [24.77] PPA10 OUTLINE .060 [1.52] x .003.001 THK [0.080.03] .250 [6.35] MIN. TYP .150 [3.81] MAX. PPA50 OUTLINE .405 [10.29] .188 [4.76] .200 [5.08] MAX .003.001 [0.080.03] 1.250 [31.75] .875 [22.23] .171 [4.34] .116 [2.95] DIA. .250 [6.35] MIN .125 [3.18] .250 [6.35] .125 [3.18] .515 [13.08] .500 [12.70] .250 [6.35] .250 [6.35] MIN TYP .062 [1.58] .125 [3.18] .060 [1.52] TYP .500 [12.70] .160 [4.06] THRU PLS .105 [2.67] PPA20 OUTLINE .210 [5.33] MAX PPA100 OUTLINE KEY: Inches [Millimeters] .XX .03 .XXX .010 [.X 0.8 .XX 0.25] 300 Dino Drive, Ann Arbor, MI 48103 Tel: 888-244-6638 or 734-426-5553 * Fax: 734-426-5557 www.aeroflex.com/inmet * inmetsales@aeroflex.com REV 04/11