1 surface mount hyperabrupt wide-band tuning varactors m/a-com products rev. v6 ma4st079 thru ma4st083 series ? north america tel: 800.366.2266 / fax: 978.366.2266 ? europe tel: 44.1908.574.200 / fax: 44.1908.574.300 ? asia/pacific tel: 81.44.844.8296 / fax: 81.44.844.8298 visit www.macom.com for additi onal data sheets and pr oduct information. ma-com technical soluti ons and its affiliates reserve th e right to make changes to the product(s) or information cont ained herein wi thout notice. advanced: data sheets contain information regarding a product ma-com technical solutions is considering for development. performance is based on target specifications, simulated results, and/ or prototype measurements. commitment to develop is not guaranteed. preliminary: data sheets contain information regarding a product ma-com technical solutions has under development. performance is based on engineering tests. specifications are typical. mechanical outline has been fixed. engineering samples and/or test data may be available. commit- ment to produce in volume is not guaranteed. features ? low cost ? very high capacitance ratio from 1 to 8 volts ? surface mount package ? high quality factor ? useful for battery applications ? spc monitored ion implantation for excellent c- v repeatability ? singles and common cathode pairs ? available in tape and reel ? lead-free (rohs complia nt) equivalents avail- able with 260c reflow compatibility description the ma4st079 through ma4st083 series of silicon hyperabrupt junction tuni ng varactors is produced with ion implantation and advanced epitaxial growth techniques. these diodes have thermal oxide pas- sivation, and feature very high capacitance ratio and quality factor. they are well suited for use from the sub-hf through uhf frequency range. the standard capacitance tolerance is 10%, with tighter toler- ances available. capacitance matching at one or more bias voltages is also available.these diodes are offered with standard sn/pb plating , as well as 100% matte sn plating on our rohs compliant equivalent devices. applications the ma4st079 through ma4st083 series of hy- perabrupt junction tuning va ractors is suggested for usage where a large frequency change is required with only a small change in tuning voltage. this se- ries is appropriate for usage in wide band voltage- controlled oscillators and voltage controlled filters which require the largest rate of change of capaci- tance with voltage. the large change in capacitance from 1 to 8 volts makes them very attractive for bat- tery operated or other syst ems with limited available control voltage. the ma4st079 through ma4st083 family can be used in vcos and vtfs from approxi- mately 100 khz through the uhf frequency band. absolute maximum ratings 1,2 @ t a =+25 c (unless otherwise noted) 1. operation of this device abov e any one of these parameters may cause permanent damage. 2. please refer to applicati on note m538 for surface mounting instructions parameter absolute maximum reverse voltage 12 v forward current 50 ma operating temperature -65 c to +125 c storage temperature -65 c to +125 c power dissipation 50mw @25c part number rohs compliant part number 3 ma4st079 mavr-000079-xxxxxx ma4st080 mavr-000080-xxxxxx ma4st081 mavr-000081-xxxxxx ma4st082 mavr-000082-xxxxxx ma4st083 mavr-000083-xxxxxx 3. suffix refers to package st yle , configuration and packaging requirements. see electrical s pecification for complete part number offerings sot-23 configurations ordering information specifications are subject to change without prior notification
2 surface mount hyperabrupt wide-band tuning varactors m/a-com products rev. v6 ma4st079 thru ma4st083 series ? north america tel: 800.366.2266 / fax: 978.366.2266 ? europe tel: 44.1908.574.200 / fax: 44.1908.574.300 ? asia/pacific tel: 81.44.844.8296 / fax: 81.44.844.8298 visit www.macom.com for additi onal data sheets and pr oduct information. ma-com technical soluti ons and its affiliates reserve th e right to make changes to the product(s) or information cont ained herein wi thout notice. advanced: data sheets contain information regarding a product ma-com technical solutions is considering for development. performance is based on target specifications, simulated results, and/ or prototype measurements. commitment to develop is not guaranteed. preliminary: data sheets contain information regarding a product ma-com technical solutions has under development. performance is based on engineering tests. specifications are typical. mechanical outline has been fixed. engineering samples and/or test data may be available. commit- ment to produce in volume is not guaranteed. electrical specifications @ t a = +25 c breakdown voltage @ i r = 10 a, v b = 12 v minimum reverse leakage current @ v r =10v, i r = 100 na maximum temperature coefficient of capacitance @v r =8 volts, tcc=400ppm/c typical 1. the prefix defines package style, configuration and packaging information. contact representative for complete part identifi cation. 2. capacitance @ 1 mhz 3. performance curves also reflec t that of the rohs equivalent part typical performance curves 3 part number base 1 rohs compliant part no. base 1 typ. capacitance ratio ct 1v /ct 8v typical q v r = 1 v f = 1 mhz v r = 2.5 v f = 1 mhz v r = 4 v f = 1 mhz v r = 8 v f = 1 mhz v r = 1v/8v f = 1 mhz v r = 4 v f = 50 mhz min. min. max. max max. typ. typ. ma4st079ck-287t mavr-000079-0287ft 87.4 48.7 59.5 27.3 11.8 9.1 80 ma4st080-287t mavr-000080-0287at 40.0 22.3 27.3 13.1 5.5 8.9 150 ma4st080ck-287t mavr-000080-0287ft 40.0 22.3 27.3 13.1 5.5 8.9 150 ma4st081-287t mavr-000081-0287at 16.2 9.1 11.1 5.2 2.4 8.5 300 ma4st081ck-287t mavr-000081-0287ft 16.2 9.1 11.1 5.2 2.4 8.5 300 ma4st082-287t mavr-000082-0287at 11.5 6.6 8.0 3.8 1.8 8.2 350 ma4st082ck-287t - 11.5 6.6 8.0 3.8 1.8 8.2 350 ma4st083-287t mavr-000083-0287at 7.9 4.5 5.5 2.6 1.3 7.8 450 MA4ST083CK-287T mavr-000083-0287ft 7.9 4.5 5.5 2.6 1.3 7.8 450 ct (pf) 2 total capacitance vs. reverse voltage nominal vs. reverse voltage specifications are subject to change without prior notification
3 surface mount hyperabrupt wide-band tuning varactors m/a-com products rev. v6 ma4st079 thru ma4st083 series ? north america tel: 800.366.2266 / fax: 978.366.2266 ? europe tel: 44.1908.574.200 / fax: 44.1908.574.300 ? asia/pacific tel: 81.44.844.8296 / fax: 81.44.844.8298 visit www.macom.com for additi onal data sheets and pr oduct information. ma-com technical soluti ons and its affiliates reserve th e right to make changes to the product(s) or information cont ained herein wi thout notice. advanced: data sheets contain information regarding a product ma-com technical solutions is considering for development. performance is based on target specifications, simulated results, and/ or prototype measurements. commitment to develop is not guaranteed. preliminary: data sheets contain information regarding a product ma-com technical solutions has under development. performance is based on engineering tests. specifications are typical. mechanical outline has been fixed. engineering samples and/or test data may be available. commit- ment to produce in volume is not guaranteed. case styles f d h j a g l c e b k n m inches millimeters dim. min. max. min. max. a ? 0.048 ? 1.22 b ? 0.008 ? 0.20 c ? 0.040 ? 1.00 d 0.013 0.020 0.35 0.50 e 0.003 0.006 0.08 0.15 f 0.110 0.119 2.80 3.00 g 0.047 0.056 1.20 1.40 h 0.037 typical 0.95 typical j 0.075 typical 1.90 typical k ? 0.103 ? 2.60 l ? 0.024 ? 0.60 dim. gradient m 10 max. n 2 . . .30 sot-23 (case style 287) mounting information the illustration indicates the recommended mounting pad configuration for the sot-23 package. solder paste containing flux should be screened onto the pads to a thickness of 0.005- 0.007 inches. the plastic package is placed in position, firmly adhering to the solder paste. permanent attachment is performed by a reflow soldering procedure during which the tab temperature does not exceed +275 c and the body temperature does not exceed +250 c, for standard models and +260 c for the rohs compliant devices. please refer to application note m538 for surface mounting instructions. sot-23 (case style 287) 0.75 1.9 .037 0.95 .035 0.90 .090 2.2 .030 0.80 inches mm dimenstions: min. min. sot-23 specifications are subject to change without prior notification
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