Fixed Coaxial Attenuators Model 253 High Power, N or SMK Connectors dc to 6 GHz 550 Watts Conduction Cooled RoHS TEST DATA: Swept data plots of attenuation and SWR from 50 MHz to 6 GHz. Features o o o o Precision Connectors with high temperature support beads. Designed to meet environmental requirements of MIL-DTL-3933. 10 Kilowatts peak, Conduction Cooled Wireless Applications - Optimized for use in the communications bands. CONNECTORS: Type N connectors per MIL-STD-348 interface dimensions - mate nondestructively with MIL-C39012 connectors. SMK (2.92mm) connectors mate with SMA, 3.5mm and other 2.92mm connectors. Options Description Options Description 1 SMK Female 3 Type N Female 2 SMK Male 4 Type N Male CONSTRUCTION: Aluminum alloy body, gold plated beryllium copper contacts. WEIGHT: 900 (31.3 oz.) maximum PHYSICAL DIMENSIONS: Specifications NOMINAL IMPEDANCE: 50 Ω FREQUENCY RANGE: dc to 6.0 GHz MAXIMUM DEVIATION OVER FREQUENCY: Nominal ATTN (dB) 10, 20, 30, 40 Deviation (dB) + 1.50 MAXIMUM SWR: Frequency (GHz) SWR dc - 2.5 2.5 - 6 1.10 1.20 3rd ORDER INTERMODULATION (253-XX-XX-LIM ONLY): Reflected Levels (IM3), -100 & Through Levels (IM3), -110 dBc with two input signals @ 869 MHz and 891 MHz with average carrier power levels of +43 dBm each. POWER RATING: 550 watts average (unidirectional), 10 kilowatt peak (5 μsec pulse width; 2.5% duty cycle) with case temperature held within 100 °C maximum with appropriate conductive heat sink. Maximum power into output is 50 Watts average. TEMPERATURE COEFFICIENT: <0.0004 dB/dB/°C TEMPERATURE RANGE: -55 to 100°C (case temperature) Connector N Male N Female DIM A 22.9 (0.90) 15.0 (0.59) Connector 2.92mm Male 2.92mm Female DIM A 14.0 (0.55) 12.7 (0.50) NOTE: All dimensions are given in mm (inches) and are maximum, unless otherwise specified. MODEL NUMBER DESCRIPTION: Example: 253 - XX - XX - LIM IM Option* Basic Model Number Attenuation Value (dB) Connector Options 1st digit is input side 2nd digit is output side * Add -LIM for Low Intermodulation option. 80 5305 Spectrum Drive, Frederick, MD 21703-7362 s TEL: 301-846-9222, 800-638-2048 s Fax: 301-846-9116 web: www.aeroflex.com/weinschel s email: [email protected] Revision Date: 6/19/2013