HIGH POWER ATTENUATORS SERIES PPA DC-4 GHz GENERAL INFORMATION The KDI/Triangle 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 Impedance: Operating Temperature: Attenuation Stability: Substrate: Resistive Element: Flange: Tabs: Cover: 50 Ohms -55C to +150C 0.0001 dB/dB/C Beryllium Oxide Ceramic Proprietary Thin Film Copper, Nickel Plated per QQ-N-290 Beryllium Copper, Gold Plated per MIL-G-45204 Alumina Ceramic 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. EXAMPLE: Basic Series PPA PERFORMANCE SPECIFICATIONS Model Attenuation(1) 1 dB Increments (dB) Frequency(1) Range Input Power (Watts) PPA 10 1-20 DC-4 GHz 10 PPA 20 1-20 DC-4 GHz 20 PPA 50 1-20 DC-1 GHz 50 PPA 100 1-20 DC-500 MHz 100 PPA 20-10 Desired dB Value Power Attenuation (1) Accuracy (dB) DC-1 GHz 1-2.5 GHz 0.5 0.5 1.0 2.0 0.5 0.5 0.5 0.5 0.75 1.0 1.0 2.0 0.3 DC-500 MHz 0.5 500 MHz-1 GHz dB 1-10 11-20 1-5 6-9 10-15 16-20 VSWR (Maximum)2 2.5-4 GHz 1.0 3.0 0.5 1.0 1.5 3.0 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 0.5 PPA 10 outline Notes: 1. Custom products are available at higher frequencies with optimized VSWR and attenuation accuracy over narrow frequency 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. .040[1,02] x .005[,0,13] .001[0,03] THK. .300 [7,6] .200.MIN. [5,1] .105[2,67] .116[2,95] DIA .200[5,1] .100[2,5] .125[3,18] TYP MIN. PPA 20 outline .100[2,5] .200[5,1] .062[1,57] .160[4,06] .515 [13,08] .060[1,52] .250[6,4] . MIN. .975 [24,77] .116[2,95] DIA .330 [8,38] .250[6,4] .125[3,18] PPA 100 outline .375 [9,53] 1.250 [31,75] .171[4,34] .500 [12,7] .003.001 [0,080,03] .060[1,52] TYP. .405 [10,29] .060[1,52] TYP. .125[3,18] TYP. .250[6,4] MIN. .125[3,18] MAX .250[6,4] MIN. .171[4,34] MAX. .003.001 [0,080,03] .160[4,06] DIA. .375[9,53] .187[4,75] .062[1,57] .150[3,8] MAX PPA 50 outline .108[2,74] .001[0,08] .003[0,25] .500[12,7] .250[6,4] MIN. .725 [18,42] .110[2,79] .250[6,4] MIN. .200[5,1] MAX .125[3,18] KEY: Inches[Millimeters] .XX .03 .XXX .010 [.X 0.8 .XX 0.25] .875 [22,23] .210[5,33] 60 South Jefferson Road, Whippany, NJ 07981 s Tel: 973-887-8100 s Fax: 973-884-0445 E-Mail: sales@mcekdi-resistor.com s See us on the web @ www.mcekdi-resistor.com 8/02