Fixed Coaxial Attenuators Model 273 High Reliability, SMA Connectors dc to 18.0 GHz 2 Watts Designed to meet requirements of MIL-DTL-3933, CLASS III/IV, N/S CONNECTORS: SMA connectors per MIL-STD-348 interface dimensions - mate nondestructively with MIL-C-39012 connectors. CONSTRUCTION: Passivated stainless steel body and connectors; gold plated beryllium copper contacts. WEIGHT: Features o Rugged injection molded connectors. o Screened (Model 273S) and Non-screened (Model 273N) designs available. o Available in 0-10 in 0.5 dB steps, 11- 20 in 1 dB steps & 25 - 40 in 5 dB steps. o Test Data supplied at additional cost as follows: dB VALUE WEIGHT (Net) 0 - 12 13 - 20 25 - 30 35 - 40 3.9 g (0.14 oz) 4.3 g (0.15 oz) 6.5 g (0.23 oz) 12.8 g (0.45 oz) PHYSICAL DIMENSIONS: Non-screened (N): Swept data plots of Attenuation and SWR across the frequency band. Screened (S): Swept data plots of Attenuation and SWR across the frequency band. Film, Standard data package includes lot record performace showing pass/fail quantities for all tests and test reports as applicable. dB VALUE 0 - 12 13 - 20 25 - 30 35 - 40 Specifications NOMINAL IMPEDANCE: 50 Ω FREQUENCY RANGE: dc to 18.0 GHz 21.8 23.9 26.5 34.3 (0.86) (0.94) (1.04) (1.35) NOTE: All dimensions are given in mm (inches) and are maximum, unless otherwise specified. MAXIMUM DEVIATION OVER FREQUENCY: Nominal ATTN (dB) 0 - 6.5 7 - 8.5 9 - 14 15 - 20 25 - 40 DIM A + 0.5 (0.02) dB + + + + + 0.30 0.40 0.50 0.60 1.00 MAXIMUM SWR: Frequency (GHz) SWR dc - 2 2-4 4-8 8 - 12.4 12.4 - 18 1.10 1.15 1.20 1.25 1.35 POWER RATING: 2 watts average to 25°C ambient temperature, derated linearly to 0.5 watts at 125°C. 500 watts peak (5 μsec pulse width; 0.2% duty cycle). Screening Units are screened as follows: "N" versions: SWR Attenuation Peak Power "S" versions: Thermal Shock Monitored Thermal Cycle (MTC) Attenuation w/Parts Assembly Verification (PAV) Conditioning Peak Power Attenuation SWR Radiographics MODEL NUMBER DESCRIPTION: Example: 273N - XX POWER COEFFICIENT: < 0.005 dB/dB/watts Attenuation Value (dB) TEMPERATURE COEFFICIENT: < 0.0004 dB/dB/°C TEMPERATURE RANGE: -55°C to +125°C Basic Model Number N = Non-screened S = Screened 41b 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: 1/27/2014