1 surface mount low power step recovery diodes m/a-com products rev. v6 ma44700 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 ? surface mount packages (sot-23,sc-79) ? low transition times ? spc process for superior c-v repeatability ? tape and reel packaging ? designed for commercial wireless applications ? also offering rohs compliant equivalent parts description the ma44700 series of step recovery diodes is designed for use in low power multipliers with output frequencies of up to 5 ghz. these step recovery diodes generate harmonics by storing a charge as the diode is driven to forward conductance by the positive voltage of the input signal. when the signal reverses polarity, this charge is extracted. the step recovery diode will appear as a low impedance cur- rentsource until all the charge is extracted, then it will ?snap? to a higher impedance. this causes a voltage pulse to form in the impulse circuit of the multiplier. step recovery diodes make excellent high order multipliers such as comb gen- erators. they are also useful as efficient moderate power x2-x4 multipliers. applications the ma44700 series step recovery are useful for surface mount low power applications. 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 operating temperature -65 c to +125 c storage temperature -65 c to +125 c reverse voltage 30v forward bias current 50 ma power dissipation 250 mw part number (non-rohs) 1 rohs compliant part numbers 1 c t 2 reverse voltage nominal carrier transition time nominal input nominal output (pf) (v) (ns) (ps) (ghz) f=1 mhz, v r =6.0 v ir =10 ua min. max. min. typical max ma44767-287t mavr-044767-0287at 3.0 4.5 30 250-500 600 0.05-5 0.5-1.5 ma44768-287t mavr-044768-0287at mavr-044768-12790t 1.6 2.4 30 75-225 250 0.1-1 0.5-2.5 ma44769-287t ma144769-287t mavr-044769-12790t 0.8 1.2 30 20-50 150 0.1-1 1-5 (ghz) 1. the prefix defines package style, configuration and packaging information. contact representative for complete part identifi cation. 2. capacitance @ 1 mhz typical capacitance vs. bias (v) freq=1mhz 0 1 2 3 4 5 6 7 8 0 5 10 15 20 25 30 bias(v) capacitance (pf) ma44768 ma44769 ma44767
2 surface mount low power step recovery diodes m/a-com products rev. v6 ma44700 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) sc-79 (case style 1279) inches millimeters dim. min. max. min. max. a 0.020 0.028 0.50 0.71 b 0.003 0.008 0.08 0.20 c 0.006 0.010 0.15 0.25 d 0.010 0.014 0.25 0.36 e 0.059 0.067 0.08 0.15 f 0.043 0.051 1.50 1.30 g 0.011 0.012 0.28 0.30 h 0.037 typical 0.043 0.94 1.09 d e f cathode mark b c seating plane 10 max a 10 max g h topview sot-23 (case style 287) sc-79 (case style 1279)
3 surface mount low power step recovery diodes m/a-com products rev. v6 ma44700 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. mounting information the illustration indicates the recommended mount- ing pad configuration for the sot-23 and sc-79 packages. 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 posi- tion, firmly adhering to the solder paste. permanent attachment is performed by a reflow sol- dering procedure during wh ich 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. sc-79 0.020 0.50 0.053 1.35 inches mm dimenstions: 0.020 0.50 0.75 1.9 .037 0.95 .035 0.90 .090 2.2 .030 0.80 inches mm dimenstions: min. min. sot-23 package configuration sot-23 (case style 287) sc-79 (case style 1279)
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