passive components: mmi 300 series spiral inductors description the micrometrics mmi 300 series of spiral inductors are formed by photolithography and plating tech- niques on quartz substrates. they eliminate the need for hand forming and staking of coil in hybrid circuits. they provide uniformity, durability and repeatability in circuit fabrication. the coils are polyimide coated to pro- tect from ambient contaminants, and to eliminate the need for conformal coating. quartz substrates are rugged and reduce dielectric losses. chips may be bonded using either conduc- tive or non conductive epoxies, and wire bonded with gold wire or ribbon by thermocompression bonding. applications the spiral inductors are ideally suited for bias injection into oscillators, amplifiers and microwave switches (bias tees). they can also be used to bias tuning varactors, pin diodes, transistors and monolithic circuits. 82 passive components features no need for staking coil passivated protective coating over coil dimensional uniformity planar solid structure coil packaging chip micrometrics, inc. 136 harvey road, building c, londonderry, nh 03053 voice: 603-641-3800, fax: 603-641-3500, internet: www.micrometrics.com, e-mail: serv@micrometrics.com chip outline gold bonding pads .003 x .003 dimensions in inches inside diameter, di = .0094 .0002 di c a b dim a dim b dim c part max max max number .040 .040 .012 mmi301 .045 .045 .012 mmi302 .050 .050 .012 mmi303 .065 .065 .012 mmi304 dimensions: inches l s r s c s equivalent circuit .com .com .com 4 .com u datasheet
passive components: mmi 300 series electrical characteristics passive components 83 micrometrics, inc. 136 harvey road, building c, londonderry, nh 03053 voice: 603-641-3800, fax: 603-641-3500, internet: www.micrometrics.com, e-mail: serv@micrometrics.com # of inductance series q test resonant turns l s (nh) resistance,r s at f t frequency,f t frequency,f r part min/typ/max dc 1ghz min/max (ghz) (ghz) number 5 1 / 2 12/15/18 2.8 4.5 25/30 1.5 6.4 mmi301 7 1 / 2 24/30/36 4.0 6.0 26/30 1.2 5.3 mmi302 9 1 / 2 42/50/58 6.0 8.5 23/27 1.0 4.2 mmi303 12 1 / 2 67/75/83 8.5 15 20/24 1.0 3.0 mmi304 notes: l s , r s and f r data measured using an hp 8510 network analyzer. inductor cross section is approximately 16 microns wide and 5 microns thick. maxium current rating: 250 ma. other values available upon request. .com .com .com 4 .com u datasheet
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