SERIES PCA, PCAA ATTENUATORS, CHIP Low Power - DC-18 GHz FEATURES * Laser Trimmed * Temperature Stable GENERAL INFORMATION The PCA and PCAA Series consists of a laser trimmed distributed 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 conductors for ease of installation. The PCAF and PCAAF options are designed for "flip-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, "W" option * Wrap around-all terminals--"F" option * Standard values 1, 2, 3, 4, 5, 6, 10, 20 dB * Non-std. values available as special order GENERAL SPECIFICATIONS Impedance ORDERING INFORMATION The attenuators listed are available in 1 dB increments from 1 through 20 dB. When ordering, to specify the correct part number for the desired attenuation value, select any of the series listed and add the attenuation value desired to the basic series designation. (x) POWER DERATING (x) Basic Option(s) Series L W F Option(s) T G 0.0001 dB/dB/C % OF RATED POWER PCA or PCAA -55C to +150C Attenuation Stability AVERAGE POWER DERATING CURVE 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 EXAMPLE: 50 Ohms Operating Temperature dB Value 100 75 50 25 0 25 150 C 85 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. EXAMPLES: PCAW-T3 PCAAF-G3 3. Rated power 1.5 watts input PCA, 100 mw PCAA. PERFORMANCE SPECIFICATIONS Attenuation Increments (dB) Note 1 DC - 4 GHz PCA, PCAA Series 1-3 0.5 Attenuation Accuracy (dB) Note 2 4 - 8 GHz 8 - 12.4 GHz 12.4 - 18 GHz PCA, PCAA PCA, PCAA PCAA Series Series Series Only 0.5 DC - 4 GHz PCA, PCAA Series VSWR (Typical) Note 2 4 - 8 GHz 8 - 12.4 GHz PCA, PCAA PCA, PCAA Series Series 12.4 - 18 GHz PCAA Series Only 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 -3.0 +0.5 -4.0 -- 1.25 1.35 1.50 -- 16 - 20 1.0 +0.5 -4.0 -- -- 1.25 1.35 -- -- KEY: Inches [Millimeters] .XX .03 .XXX .010 [.X 0.8 .XX 0.25] REV 3/05 SERIES PCA, PCAA ATTENUATORS, CHIP Low Power - DC-18 GHz PHYSICAL DIMENSIONS PCA PCAW (WRAP AROUND GROUND TERMINAL ONLY) .025[0.64] MIN .025[0.64] MIN .010 [0.25] .060[1.52] TYP. .125 [3.18] .060[1.52] TYP. .125 [3.18] .150 [3.8] GROUND .150 [3.8] .015[0.38] MIN WRAP AROUND GROUND .015[0.38] MIN PCAF (WRAP AROUND ALL TERMINALS) PCAL (LEAD/COVER) .150 [3.8] .010 [0.25] .250[6.4] MIN .040[1.02] MAX .025 MIN [0.64] .010 [0.25] .125 [3.18] .060[1.52] TYP. .125 [3.18] .150 [3.8] .060.003 [1.520.08] TYP. WRAP AROUND GROUND .015[0.38] MIN .003.001 [0.080.03] PCAA MAXIMUM FREQUENCY 4 GHz PCAAW (WRAP AROUND GROUND TERMINAL ONLY) .025[0.64] TYP. .025[0.64] TYP. .010 [0.25] .020[0.5] TYP. .060 [1.52] .010 [0.25] .020[0.5] TYP. .060 [1.52] .075 [1.9] .075 [1.9] GROUND .015[0.38] MIN PCAAL (LEAD/COVER) WRAP AROUND GROUND .015[0.38] MIN PCAAF (WRAP AROUND ALL TERMINALS) .075 .250[6.4] MIN [1.9] .025[0.64] TYP. .040[1.02] MAX .060 [1.52] .010 [0.25] .020[0.5] TYP. .060 [1.52] .020.003 [0.50.08] TYP. .003.001 [0.080.03] .075 [1.9] WRAP AROUND GROUND .015[0.38] MIN KEY: Inches [Millimeters] .XX .03 .XXX .010 [.X 0.8 .XX 0.25] KDI-RESISTOR PRODUCTS MAXIMUM FREQUENCY 8 GHz 60 South Jefferson Road, Whippany, NJ 07981 Tel: 973-887-8100 * Fax: 973-884-0445 www.aeroflex-kdi.com * sales@aeroflex-kdi.com