High Power Fixed Attenuators (Heat sink Mounting Type) AT-1200 and AT-1300 Series ■Features 1.Small Size and Economical Beryllia is used for the material of the resistance element to enable the attenuation to be of small size and low cost. 2.High Power Capacity Mounting these attenuators to a heat sink permits the AT-1200 Series to be used at up to 30 W and the AT1300 Series to be used at up to 50 W. 3.High Reliability These attenuators show stable characteristics for environments of varying temperature, humidity, and gases. AT-1320-H • J AT-1210-H • J ■Product Specifications Ratings Frequency range (Note) Characteristic impedance Maximum Input Power (Note) DC to 2.0 GHz 50 ohms 30 to 50 W Operating temperature range Operating relative humidity -10ç to +65ç 95% Max. Note: The frequency range and the maximum input power will differ depending on the products. Item Standard Conditions Frequency of 10 to 2000 Hz, overall amplitude of 1.52 mm, 1.Vibration 2.Shock No electrical discontinuity of 1 µs or more acceleration of 98 m/s2 for 2 hours in each of 3 directions No damage, cracks, or parts dislocation Acceleration of 490 m/s2, sine half-wave waveform, 3 cycles in each of the 3 axis Temperature: -55ç → +5ç to +35ç → +85ç → +5ç to +35ç 3.Temperature cycle No damage, cracks, or parts dislocation Time: 30 → 15 max. → 30 → 15 max. (Minutes) 200 cycles ●The test method conforms to MIL-STD-202. ■Materials Part Material Finish Connector Body Stainless steel Passivated Body Aluminum Conductive white alumite Female contacts Beryllium copper Gold plating Insulation PTFE ---------- Attenuation element Metal film ---------- ■Ordering Information 1 AT: Indicates a fixed attenuator AT - 12 10 - H • J 1 88 2 3 4 3 Attenuation 10 : 10dB 2 Indicates the Series Name (Maximum Usable Power) 20 : 20dB 4 Coupling Portion 12: HRM type plug - jack 30W H • J : SMA type jack - jack 13: N•H : N type plug - jack 50W N type jack - SMA type jack ■Specifications Part Number Frequency Range (GHz) Attenuation (dB) V.S.W.R. (Max) Impedance (ohms) Power (W) Heat Sink Temperature at Maximum Load (çMax) Connectors Weight (g) AT-1210-H • J DC~1 10±0.5 1.2 50 30W(CW) +65 HRM-J • J 54 AT-1220-H • J DC~1 20±0.5 1.2 50 30W(CW) +65 HRM-J • J 54 AT-1310-H • J DC~2 10±0.5 1.2 50 50W(CW) +65 HRM-J • J 54 π AT-1320-H • J DC~2 20±0.5 1.2 50 50W(CW) +65 HRM-J • J 54 π πThe AT-1300 Series has input and output directivity. ■External Dimensions AT-1200-H • J AT-1300-H • J ■Typical Data AT-1220 AT-1320 89