Fixed Attenuators - 2W power (SMA type) AT-1900 Series ■Features 1.Small Size Use of alumina for the attenuation element assures light weight and is cost effective. 2.SMA coupling Several configurations of SMA plug/jack couplings are available in stainless steel, assuring durability. 3.High Reliability Proven and stable performance characteristic under varying temperature, humidity and adverse environmental conditions. ■Product Specifications Ratings Frequency range Characteristic impedance Maximum Input Power Item 1.Vibration 2.Shock DC to 8.0GHz 50 ohms 2W Operating temperature Operating Humidity Characteristic Requirement _30ç ~ +65ç 95% max. Conditions Frequency of 10 to 2000 Hz, overall amplitude of 1.52 mm, acceleration of 98 m/s2 for 4 hours in each of 3 directions No electrical discontinuity of 1 µs or more. No damage, cracks, or parts dislocation. Acceleration of 490 m/s2, sine half-wave waveform, 3 cycles in each of the 3 axis Temperature : -35ç → +5ç to +35ç → +85ç → +5ç to +35ç Time : 30 → 15 max. → 30 → 15 max. (Minutes) 5 cycles 3.Temperature cycle No damage, cracks, or parts dislocation. ●The test method conforms to MIL-STD-202. ■Material 86 ■Ordering Information Component Material Finish Body Stainless steel Passivated Insulator PTFE --- Male contact Brass Gold plated Female contact Beryllium copper Gold plated Outer conductor (interior) Aluminum Nickel plated Couplings Stainless steel Passivated Radiator Aluminum Black alumite Attenuation element Alumina --- AT ---- 19 03 1 1 2 2 Fixed attenuator Series Name and coupling type: SMA plug/jack 3 3 Attenuation 03 : 3dB 06 : 6dB 10 : 10dB ■Specifications Part Number Frequency Range (GHz) Attenuation (dB) DC~4 V.S.W.R. (Max) Impedance (ohms) Power (W) 1.25 50 2 1.25 50 2 1.3 50 2 3±0.3 AT-1903 4~8 3±0.5 DC~4 6±0.3 AT-1906 4~8 6±0.5 DC~4 10±0.5 AT-1910 4~8 10±1.5 Connectors SMA type plug / jack SMA type plug / jack SMA type plug / jack Weight (g) 40 40 40 ■External Dimensions 48 1/4-36UNS-2B Ø19 1/4-36UNS-2A 8.5 28 11.5 AT-1900 ■Typical Data AT-1903 VSWR 87