HP / Agilent 8495K Programmable Attenuator, 26.5 GHz, 70dB, 10dB steps

The HP/Agilent 8495K is a programmable step attenuator delivering precise signal attenuation from DC to 26.5 GHz. It provides 0 to 70 dB attenuation in discrete 10 dB steps with exceptional repeatability of ±0.01 dB typical and ±0.03 dB maximum to 18 GHz, ±0.05 dB to 26.5 GHz. Built with gold-plated leaf springs, the attenuator sustains over 5 million switching cycles per section and settles within 20 ms. Insertion loss measures 0.4 dB + 0.09 dB/GHz at 0 dB attenuation. Maximum SWR ranges from 1.6 across 1.6 to 12.4 GHz, 1.9 to 18 GHz, and 2.2 to 26.5 GHz. The unit handles 1 W average RF input power and 100 W peak (10 microsecond pulse maximum). Solenoid drive requires 20 V to 30 V at approximately 125 mA per section at 24 Vdc. Standard connector is APC 3.5 mm female; programming interface uses 12-pin Viking (14-pin DIP optional). Operating temperature range is 0 to +55 °C with storage limits of –40 to +75 °C. The attenuator suits automated test, signal conditioning, and RF/microwave component verification in laboratory and production environments requiring repeatable, accurate level control.