1mm glass resistors work from dc to 40GHz

Richardson RFPD is stocking 0402 (1005 metric) glass sandwich resistors designed to work from dc to 40GHz.

Richardson Kyocera AVX UBR microwave resistors

Made by Kyocera AVX, and called the UBR series, they measure 1 x 0.5 x 0.5mm and have a flexible termination.

“‘Flexiterm’ is a surface-mountable, automotive-qualified termination that adds an extra margin of protection against damage due to flexure during installation,” according to Richardson. “The use of glass sandwich technology and precision laser trimming reduces parasitic noise up to 40GHz.”


Seven values are offered: 25, 37.5, 43, 50, 75, 100 and 200Ω. Laser trimming is to 1%.


125mW can be handled, and operation is over -40 to +125°C.

“UBR Series is suitable for use in optical transceiver modules or broadband receivers, wideband test equipment, low-noise amplifiers, mixers, directional couplers, splitters and combiners.

Find the 200Ω UBR0402A201FZTR on this Richardson web page

Steve Bush

Steve Bush is the long-standing technology editor for Electronics Weekly, covering electronics developments for more than 25 years. He has a particular interest in the Power and Embedded areas of the industry. He also writes for the Engineer In Wonderland blog, covering 3D printing, CNC machines and miscellaneous other engineering matters.