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? visit our web site: features octave frequency tuning from 0 to 10 volts good linearity tuning ratio without compensation network offered in package styles suitable for a wide range of applications alpha microwave hyperabrupt diodes are designed for wideband tuning of microwave filters, resonators, and local oscillators. linear tuning, not possible with conventional abruptjunction tuning diodes, is accomplished by maintaining an accurate silicon doping profile using ionimplantation precision control techniques. this series of hyperabrupt diodes offer wide bandwidth tuning with low bias voltage. for example, a 22 volt hyperabrupt diode can provide the same tuning variation as a 90 volt abruptjunction diode. description when capacitance and tuning ratio values are equal, a hyperabrupt diode will have a q (measured at 4 volts, 50 mhz) approximately 1/2 to 1/3 that of an abruptjunction diode. these diodes are available in many alpha ceramic packages. they can be supplied in chip form or mounted on a variety of packages. all chips are passivated with silicon dioxide for reliability and low leakage current. the specifications table indicates chip capacitance measured at 1 mhz. for packaged varactors add appropriate package capacitance, e.g., 0.22 pf for package 210, to obtain total capacitance. maximum ratings reverse voltage, v r : forward current, i f : power dissipation at 25 c: operating temperature: storage temperature: 22v 100 ma 250 mw 55 to 150 c 65 to 200 c electrical specifications at 25 c square passivated silicon chips part number v b @ 10 m a (v) i r @ 17.6v (na) c j @ 4v (pf) c j @ 20v (pf) q @ 4v 50 mhz chip outline n mber min. max. min. max. min. max. min. n um b er smv2019000 22 50 0.68 0.88 0.13 0.23 500 149801 smv2020000 22 50 1.13 1.43 0.23 0.33 500 149801 smv2021000 22 50 1.58 1.98 0.32 0.44 500 149801 smv2022000 22 50 2.48 3.08 0.48 0.68 400 149801 smv2023000 22 50 4.28 5.28 0.78 1.08 400 149801 available through distribution. silicon low capacitance hyperabrupt junction varactor diodes smv2019 to smv2023
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? visit our web site: ordering information the following packages are also available. to order part in a different package just replace the dash number with a package style listed below. for example, smv2019000 becomes smv2019210. available package outlines: 202, 203, 204, 210, 219, 230, 240 refer to the outline drawings section in this catalog for the total selection of outline (package) dimensions. 210 202 240 219 230 203 204 outline dimensions 149801 silicon low capacitance hyperabrupt junction varactor diodes smv2019 to smv2023
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