skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@ skyworksinc.com ? www.skyworksinc.com 201294f ? skyworks proprietary information ? products and product in formation are subject to cha nge without notice ? may 7, 2015 1 data sheet sms7621-060: surface mount, 0201 low-barrier silicon schottky diode applications ? sensitive detector circuits ? sampling circuits ? mixer circuits features ? low barrier height ? suitable for use above 26 ghz ? low parasitic impedance: c p < 0.05 pf, l s < 0.2 nh ? low profile, ultra-miniature 0201 smt package (msl1, 260 ? c per jedec j-std-020) s kywork s g reen tm product s are compliant with all applicable legi s lation and are halogen-free. for additional information, refer to skyworks de?ition of green tm , document number s q04C0074. description the sms7621-060 is a silicon, low-barrier n-type schottky diode with an ultra-miniature 0201 footprint. this diode can be used in detector circuits, sampling circuits, and mixer circuits. the low series resistance of this low-barrier diode enables good performance as a low-level mixer at frequencies up to 26 ghz and higher. a pinout diagram for the sms7621-060 is shown in figure 1. top view bottom view y1 9 51 figure 1. sms7621-060 pinout diagram
data sheet ? sms7621-060 schottky diode skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@ skyworksinc.com ? www.skyworksinc.com 2 may 7, 2015 ? skyworks proprietary inform ation ? products and pro duct information are subject to change without notice ? 201294f mixer and detector applications 24 ghz detector design a detector circuit that incorporates an sms7621-060 schottky diode and covers the 24 ghz band is shown in figure 2. the rf arrives on a 50 microstrip line from the left and is shorted to gnd by a 90 degree line with a stub (gnd arrives by a via). the cathode of the diode is directly connected to a 24 ghz stub. this output is loaded by a 100 k resistor and a 100 pf capacitor. the output voltage is fed to a 2-pin, 2.54 mm header. the circuit was built on a 0.254 mm rogers ro-4350b substrate and measured with a power-variable 24 ghz source. a layout design is illustrated in figure 3. input power versus detected voltage for this detector is shown in figure 8. /4 /4 detected voltage 100 k 100 pf s m s 7 6 21-0 6 0 rf input figure 2. schematic of a 24 ghz detector design figure 3. layout for a 24 ghz detector design 24 ghz rat-race mixer a rat-race mixer that uses two sms7621-060 schottky diodes is shown in figure 4. the lo signal (24 ghz) is fed from the right side and reaches a rat-race ring. the diodes are positioned 90 degrees apart from the lo input and are terminated in a stub. both diodes are connected (using a 1206 resistor) and are loaded by a 470 resistor and a 10 pf capacitor. this forms the if output (10 mhz). the rf input (24.010 ghz) is directly connected to the rat-race ring. a layout design is illustrated in figure 5. the mixer has been tested with the following conditions: lo frequency: 24 ghz lo power: 0 to +5 dbm rf frequency: 24.010 ghz rf power: C30 dbm the if output was loaded with 50 . measured conversion loss data for this mixer is shown in figure 9. /4 /4 /4 100 k 100 pf s m s 7 6 21-0 6 0 s m s 7 6 21-0 6 0 /4 /4 /4 3 /4 rf input lo input if out figure 4. schematic of a 24 ghz rat-race mixer figure 5. layout for a 24 ghz rat-race mixer
data sheet ? sms7621-060 schottky diode skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@ skyworksinc.com ? www.skyworksinc.com 201294f ? skyworks proprietary information ? products and product in formation are subject to cha nge without notice ? may 7, 2015 3 electrical and mechanical specifications the absolute maximum ratings of the sms7621-060 are provided in table 1. electrical specifications are provided in table 2. the associated spice model parameters are provided in table 3. typical performance characteristics are shown in figures 6 through 9. package dimensions the pcb layout footprint for the sms7621-060 is provided in figure 10. package dimensions are shown in figure 11, and tape and reel dimensions are provided in figure 12. package and handling information instructions on the shipping container label regarding exposure to moisture after the container seal is broken must be followed. otherwise, problems related to moisture absorption may occur when the part is subjected to high temperature during solder assembly. the sms7621-060 is rated to moisture sensitivity level 1 (msl1) at 260 ? c. it can be used for lead or lead-free soldering. for additional information, refer to the skyworks application note, solder reflow information , document number 200164. care must be taken when attaching this product, whether it is done manually or in a production solder reflow environment. production quantities of this product are shipped in a standard tape and reel format. table 1. sms7621-060 series absolute maximum ratings (note 1) parameter symbol minimum maximum units reverse voltage v r 2 v forward current i f 50 ma power dissipation p d 75 mw storage temperature t stg C65 +200 ? c operating temperature t a C65 +150 ? c electrostatic discharge: charged device model (cdm), class 4 human body model (hbm), class 0 machine model (mm), class a esd 1000 100 30 v v v note 1: exposure to maximum rating conditions for extended periods may reduce device reliability. there is no damage to device with on ly one parameter set at the limit and all other parameters set at or below their nominal value. exceeding any of the limits listed here may result in permanent damage to the d evice. caution : although this device is designed to be as robust as possible, electrostatic discharge (esd) can damage this device. this devi ce must be protected at all times from esd. static charges may eas ily produce potentials of several kilovolts on the human body or equipment, which can discharge without detection. industry-standard esd precautions should be used at all times. table 2. sms7621-060 electrical specifications (note 1) (t a = +25 ? c, unless otherwise noted) minimum breakdown voltage @ i r = 10 a (v) maximum total capacitance @ v r = 0 v, f = 1 mhz (pf) forward voltage @ i f = 1 ma (mv) maximum series resistance ( ) 2 0.18 260 to 320 12 note 1: performance is guaranteed only under the conditions listed in this table.
data sheet ? sms7621-060 schottky diode skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@ skyworksinc.com ? www.skyworksinc.com 4 may 7, 2015 ? skyworks proprietary inform ation ? products and pro duct information are subject to change without notice ? 201294f table 3. spice model parameters parameter units sms7621-060 i s a 2.6459e-8 r s 10.3 n C 1.01 tt sec 1e-11 c jo pf 0.13 m C 0.35 e g ev 0.69 xti C 2 f c C 0.5 b v v 3 i bv a 1e-5 v j v 0.51
data sheet ? sms7621-060 schottky diode skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@ skyworksinc.com ? www.skyworksinc.com 201294f ? skyworks proprietary information ? products and product in formation are subject to cha nge without notice ? may 7, 2015 5 typical performance characteristics @ 25 c 0 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0246810 forward bias current (ma) forward voltage (v) figure 6. forward voltage vs forward current 1 10 100 1000 10000 C30 C20 C10 0 +10 input power (dbm) output voltage (mv) figure 8. output voltage vs input power 0.0001 0.001 0.01 0.1 1 10 100 1000 10000 C 6 0 C50 C40 C30 C20 C10 0 +10 incident power (dbm) detected voltage (mv) i f = 0 i f = 5 a figure 7. detector voltage @ 2.45 ghz (100 k video resistance) 12 10 8 6 14 1 6 0+1+2+3+4+5 lo power (dbm) c onver s ion lo ss (db) figure 9. conversion loss vs lo power
data sheet ? sms7621-060 schottky diode skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@ skyworksinc.com ? www.skyworksinc.com 6 may 7, 2015 ? skyworks proprietary inform ation ? products and pro duct information are subject to change without notice ? 201294f 0.100 0.200 p c b s older ma s k opening p c b pad metallization device outline 0.380 0.280 0.300 0.400 s 2030 0.200 0.250 0.300 all measurements are in millimeters device outline s tencil aperture figure 10. sms7621-060 pcb layout footprint 0.023 6 0.001 (0. 6 00 0.025 mm) 0.008 9 0.001 (0.22 6 0.025 mm) 0.0107 0.001 (0.273 0.030 mm) 0.0118 0.001 (0.300 0.025 mm) 0.0077 0.001 (0.1 96 0.025 mm) 0.0007 0.0002 (0.0175 0.005 mm) n-type 0.00 6 5 0.001 (0.1 6 5 0.025 mm) c athode terminal (n-type device) s1998 c athode indicator mu s t match c athode terminal on the front s ide figure 11. sms7621-060 package dimension drawing
data sheet ? sms7621-060 schottky diode skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@ skyworksinc.com ? www.skyworksinc.com 201294f ? skyworks proprietary information ? products and product in formation are subject to cha nge without notice ? may 7, 2015 7 s2000 notes: 1. carrier tape: black conductive polycarbonate bakeable material at 125 ?. 2. cover tape: transparent conductive material. 3. cover tape size: 5.4 mm width. 4. esd surface resistivity meets requirements of gp01-d232. 5. all measurements are in millimeters. 8.00 +0.3/C0.1 3.50 0.05 a a a bb c b c s cale: 5x ? 1.50 +0.1/C0.0 ? 0.20 0.05 4.00 0.01 2.00 0.05 2.00 0.05 0.38 0.05 (ao) 0.20 0.05 0.70 0.05 (bo) 0.35 0.05 (ko) 1.75 0.10 c athode indicator figure 12. sms7621-060 tape and reel dimensions copyright ? 2010, 2012, 2015 skyworks solutions, inc. all rights reserved. information in this document is provided in connection with skyw orks solutions, inc. (skyworks) products or services. these m aterials, including the information co ntained herein, are provided by skyworks as a service to its customers and may be used for info rmational purposes only by the cu stomer. skyworks assumes no res ponsibility for errors or omissions in these materials or the information contained herein. skyworks may change its documentat ion, products, services, specific ations or product descriptions at any time, without notice. skyworks makes no commitment to update the materials or information and shall have no responsi bility whatsoever for conflicts, incompatibilities, or other diff iculties arising from any future changes. no license, whether express, implied, by es toppel or otherwise, is granted to any in tellectual property rights by this document . skyworks assumes no liability for any materials, products or information provided hereunder, including the sale, distribution, re production or use of skyworks products, information or mate rials, except as may be provided in skyworks terms and conditions of sale. the materials, products and information are pr ovided as is without warranty of any ki nd, whether express, implied, statutory, or otherwise, including fitness for a particular purpose or use, merchantability, performance, qualit y or non-infringement of any intellectual property right; all su ch warranties are hereby expressly disclaimed. skyworks does not warrant the accura cy or completeness of the information, text, graphics or other items contained within these ma terials. skyworks shall not be liable for any damages, including but not limited to any special, indirect, incidental, statutory, or consequentia l damages, including without limitation, lost revenues or lost profits that may result from the use of the materials or information, wheth er or not the recipient of mat erials has been advised of the possibility of such damage. skyworks products are no t intended for use in medical, lifesaving or life-su staining applications, or other equipment in which the failure of the skyworks products could lead to personal injury, death, physical or environmental damage. skyw orks customers using or selli ng skyworks products for use in such applications do so at their own risk and agree to fully indemnify skyworks for any damages resulting from such improper use or sale. customers are responsible for their products and applications us ing skyworks products , which may deviate from published specifi cations as a result of design de fects, errors, or operation of products outside of published pa rameters or design specifications. customers sh ould include design and operating safeguards to minimize these and other risks. skyworks assumes no liability for applications assistance, customer product de sign, or damage to any equipment resulting from the use of skyw orks products outsid e of stated published specifications or parameters. skyworks and the skyworks symbol are trademarks or registered trad emarks of skyworks solutions, inc., in the united states and other countries. third-party brands and names are for identification purposes only, and are the pr operty of their respective owners. additi onal information, including relevant terms and conditions, posted at www.skyw orksinc.com, are incorporated by reference.
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