www.sensirion.com version 4 C may 201 4 1 / 10 datasheet sht20 p humidity and temperature sensor ic ? fully calibrated ? analog output, pwm interface ? low power consumption ? excellent long term stability ? d fn type package C reflow solderable dimensions figure 1 : drawing of sht20 p sensor package, dimensions are given in mm (1mm = 0.039inch), tolerances are 0.1mm. the die pad (center pad) is internally connected to vss. the nc pads must be left floating . numbering of e/ o pads starts at lower right corner (indicated by notch in die pad) and goes clockwise (compare table 2 ). sensor chip sht20 p feature s a generation 4c cmosens? chip. besides the capacitive relative humidity sensor and the band gap temperature sensor, the ch ip contains an amplifier, a/d converter, otp memory and a digital processing unit. material contents while the sensor itself is made of silicon the sensors housing consists of a plated cu lead - frame and green epoxy - based mold compound. the device is fre e of pb, cd and hg C hence it is fully rohs and weee compliant. additional information additional information such as application notes is available from the web page www.sensirion.com/sht20 . for more info rmation please contact sensirion via info@sensirion.com . 1.0 1.0 2 . 4 0 . 3 0.4 1.5 0.4 0.75 1.1 0.2 scl sda nc nc vss vdd bottom view sht2 0 d0ac4 3.0 2.2 1.4 max 3.0 0.3 typ 2.4 max product summary the sht 20p humidity and temperature sensor of sensirion has become an industry standard in terms of form factor and intelligence: embedded in a reflow solderable dual flat no leads (dfn) package of 3 x 3mm foot print and 1.1mm height it provides calibrated, lineariz ed sensor signals in analog pulse width modulated (pwm) format. the sht2x sensors contain a capacitive type humidity sensor, a band gap temperature sensor and specialized analog and digital integrated circuit C ? chip. this yields in an unmatched sensor performance in terms of accuracy and stability as well as minimal power consumption. the pwm signal runs on a base frequency of 120hz, the data signal is provided on sda line. pulling scl high or low allows for switching between humidi ty and temperature, respectively. the sensor measures twice per second. the pwm signal may be converted to an analog ratiometric interface by adding a low pass filter. every sensor is individually calibrated and tested. lot identification is printed on the sensor. with this set of features and the proven reliability and long - term stability, the sht2x sensor s offer an outstanding performance - to - price ratio . for testing sht2 x two evaluation k it s ek - h4 and ek - h5 are available.
www.sensirion.com version 4 C may 201 4 2 / 10 sensor performance relative humidity 1 2 3 parameter condition value units resolution 12 bit 0.04 %rh accuracy tolerance 1 typ ? 3.0 %rh max see figure 2 %rh repeatability ? 0.1 %rh hysteresis ? 1 %rh nonlinearity <0.1 %rh response time 2 ? 63% 8 s operating range extended 3 0 to 100 %rh long term drift 4 typ. < 0.25 %rh/yr figure 2 typical and maximal tolerance at 25c for relative humidity. for extensive information see users guide, sect. 1.2. electrical specification parameter condition min typ max units supply voltage, vdd 2.1 3.0 3.6 v supply current, idd 5 1 80 a power dissipation 5 0.5 4 mw pwm frequency 40 c 108 120 132 hz temperature drift of pwm frequency - 0.07 - 0.12 hz/c measurement frequency 2 hz switch rh/t on sda scl up ? rh; scl down ? t table 1 electrical specification. for absol ute maximum values see chapter 4 .1 of users guide. 1 accuracies are tested at outgoing quality control at 25c and 3.0v . values exclude hysteresis and long term drift and are applicable to non - condensing environments only. 2 time for achieving 63% of a step function, valid at 25c and 1 m/s airflow. 3 normal operating range: 0 - 80%rh, beyond this limit sensor may read a reversible offset with slow kinetics (+3%rh after 60h at humidity >80%rh ). for more details please see section 1.1 of the users guide. temperature 4 5 6 parameter condition value units resolution 14 bit 0.01 c accuracy tolerance 1 typ ? 0.3 c max see figure 3 c repeatability ? 0.1 c operating range extended 3 - 40 to 125 c response time 6 ? 63% 5 to 30 s long term drift 7 typ. < 0.02 c/yr figure 3 typical and m aximal temperature accuracy tolerance packaging information sensor type packaging quantity order number SHT20P tape & reel 1 500 1 - 1007 45 - 01 tape & reel 5000 1 - 100 746 - 01 this datasheet is subject to change and may be amended without prior notice. 4 typical v alue for operation in normal rh/t oper ating range. max. v alue is < 0.5 %rh/y . value may be higher in environments with vaporized solvents, out - gassing tapes, adhesives, packaging materials, etc. for more details please refer to handling instructions. 5 values of supply current and power dissip ation are based upon fixed vdd = 3.0v and t = 25 c. 6 response time depends on heat conductivity of sensor substrate. 7 max. value is < 0.04c/y. 0 2 4 6 8 10 0 10 20 30 40 50 60 70 80 90 100 rh (%rh ) relative humidity (%rh) maximum accuracy typical accuracy 0.0 0.5 1.0 1.5 2.0 -40 -20 0 20 40 60 80 100 120 t ( ? c) temperature ( c) maximum accuracy typical accuracy
www.sensirion.com version 4 C may 201 4 3 / 10 users guide sht20 p 1 extended specifications for details on how sensirion is specifying and testing accuracy performance ple ase consult application note statement on sensor specification. 1.1 operating range the sensor works stable within recommended normal range C see figure 4 . long term exposure to conditions outside normal range, especial ly at humidity >80%rh, may temporarily offset the rh signal (+3%rh after 60h). after return into the normal range it will slowly return towards calibration state by itself. prolonged exposure to extreme conditions may accelerate ageing. figure 4 operating conditions 1.2 rh accuracy at various temperatures typical rh accuracy at 25c is defined in figure 2. for other temperatures , ty p ical accuracy has been evaluated to be as displayed in figure 5 . . figure 5 typical accuracy of relative humidity measurements given in %rh for temperatures 0 C 80c. 2 application information 2.1 soldering instructions the dfns die pad (centre pad) and perimeter i/o pads are fabricated from a planar copper lead - frame by over - molding leaving the die pad and i/o pads exposed for mechanical and electrical connection. both the i/o pads and die pad should be soldered to the pcb. in order to prevent oxidation and optimi ze soldering, the bottom side of the sensor pads is plated with ni/pd/au. on the pcb the i/o lands 8 should be 0.2mm longer than the package i/o pads. inward corners may be rounded to match the i/o pad shape. the i/o land width should match the dfn - package i/o - pads width 1:1 and the land for the die pad should match 1:1 with the dfn package C see figure 6 . the solder mask 9 design for the land pattern preferably is of type non - solder mask defined (nsmd) with solder mask openings larger than metal pads. for nsmd pads, the solder mask opening sh ould be about 120m to 150m larger than the pad size, providing a 60m to 75m design clearance between the copper pad and solder mask. rounded portions of package pads should have a matching rounded solder mask - opening shape to minimize the risk of solde r bridging. for the actual pad dimensions, each pad on the pcb should have its own solder mask opening with a web of solder mask between adjacent pads. figure 6 recommended metal land pattern for sht2 x. values in mm. die pad (centre pad) may be left floating or be connected to ground, nc pads shall be left floating . the outer dotted line represents the outer dimension of the dfn package. for solder paste printing a laser - cut, stainless steel stencil wi th electro - polished trapezoidal walls and with 0.125mm stencil thickness is recommended. for the i/o pads the 8 the land pattern is understood to be the metal layer on the pcb, onto which the dfn pads are soldered to. 9 the solder mask is understoo d to be the insulating layer on top of the pcb covering the connecting lines. 0 10 20 30 40 50 60 70 80 90 100 -40 -20 0 20 40 60 80 100 120 relative humidity (%) temperature ( c) m ax. range normal range 1.0 1.0 0.3 0.4 1.5 0.4 0.7 0.2 0.2 2.4 100 4.5 4 4 4 4 4 4.5 5 5 90 4.5 4 3.5 3.5 3.5 3.5 4 4.5 5 80 4 3.5 3 3 3 3.5 3.5 4 4.5 70 4 3.5 3 3 3 3 3.5 3.5 4 60 3.5 3 3 3 3 3 3 3.5 3.5 50 3.5 3 3 3 3 3 3 3 3.5 40 3.5 3 3 3 3 3 3 3 3 30 3.5 3 3 3 3 3 3 3 3 20 3.5 3.5 3 3 3 3 3 3 3 10 4 4 3.5 3.5 3.5 3.5 3.5 3.5 3.5 0 4.5 4.5 4 4 4 4 4 4 4 0 10 20 30 40 50 60 70 80 relative humidity [%rh] temperature [c]
datasheet SHT20P www.sensirion.com version 4 C may 201 4 4 / 10 stencil apertures should be 0.1mm longer than pcb pads and positioned with 0.1mm offset away from the centre of the package. the die pad aperture should cover about 70 C 90% of the pad area C say up to 1.4mm x 2.3mm centered on the thermal land area. it can also be split in two openings. due to the low mounted height of the dfn, no clean type 3 solder paste 10 is recommended as well as nitrogen pur ge during reflow. figure 7 soldering profile according to jedec standard. t p <= 260c and t p < 3 0sec for pb - free assembly. t l < 220c and t l < 150sec. ramp - up/down speeds shall be < 5c/sec. it is impo rtant to note that the diced edge or side faces of the i/o pads may oxidise over time, therefore a solder fillet may or may not form. hence there is no guarantee for solder joint fillet heights of any kind. for soldering sht2x, standard reflow soldering ov ens may be used. the sensor is qualified to withstand soldering profile a ccording to ipc/jedec j - std - 020 with peak temp eratures at 260c during up to 3 0sec for pb - free assembly in ir/convection reflow ovens (see figure 7 ). for manual soldering contact time must be limited to 5 seconds at up to 350 c. immediately after the exposure to high temperatures the sensor may temporarily read a negative humidity offset (typ. - 1 to - 2 %rh after reflow soldering). this offset slowly disappears again by itself when the sensor is exposed to ambient conditions (typ. within 1 - 3 days). if rh testing is performed immediately after reflow soldering, this offset should be considered when defining the test limits. in no case, neither af ter manual nor reflow soldering, a board wash shall be applied. therefore, and as mentioned above, it is strongly recommended to use no - clean solder paste. in case of applications with exposure of the sensor to corrosive gases or condensed water (i.e. en vironments with high relative humidity) the soldering pads shall be sealed (e.g. conformal coating) to prevent loose contacts or short cuts. 10 solder types are related to the solder particle size in the paste: type 3 covers the size range of 25 C 45 m (powder type 42). 2.2 storage conditions and handling instructions moisture sensitivity level (msl) is 1, according to ipc/jedec j - std - 02 0. at the same time, it is recommended to further process the sensors within 1 year after date of delivery. it is of great importance to understand that a humidity sensor is not a normal electronic component and needs to be handled with care. chemical vapo rs at high concentration in combination with long exposure times may offset the sensor reading. for this reason it is recommended to store the sensors in original packaging including the sealed esd bag at following conditions: temperature shall be in the range of 10c C 50c and humidity at 20 C 60%rh (sensors that are not stored in esd bags). for sensors that have been removed from the original packaging we recommend to store them in esd bags made of metal - in pe - hd 11 . in manufacturing and transport the sen sors shall be prevented of high concentration of chemical solvents and long exposure times. out - gassing of glues, adhesive tapes and stickers or out - gassing packaging material such as bubble foils, foams, etc. shall be avoided. manufacturing area shall be well ventilated. for more detailed information please consult the document handling instructions or contact sensirion. 2.3 temperature effects relative humidity reading strongly depends on temperature. therefore, it is essential to keep humidity sensors at t he same temperature as the air of which the relative humidity is to be measured. in case of testing or qualification the reference sensor and test sensor must show equal temperature to allow for comparing humidity readings. if the sensor shares a pcb with electronic components that produce heat it should be mounted in a way that prevents heat transfer or keeps it as low as possible. measures to reduce heat transfer can be ventilation, reduction of copper layers between the sensor and the rest of the pcb or milling a slit into the pcb around the sensor C see figure 8 . 11 for example, 3m antistatic bag, product 1910 with zipper. temperature time t p t p t l t s (max) t l preheating critical zone
datasheet SHT20P www.sensirion.com version 4 C may 201 4 5 / 10 figure 8 top view of example of mounted sht2x with slits milled into pcb to minimize heat transf er. 2.4 light the sht2x is not light sensitive. prolonged direct exposure to sunshine or strong uv radiation may age the sensor. 2.5 materials used for sealing / mounting many materials absorb humidity and will act as a buffer increasing response times and hystere sis. materials in the vicinity of the sensor must therefore be carefully chosen. recommended materials are: any metals, lcp, pom (delrin), ptfe (teflon), peek, pp, pb, pps, psu, pvdf, pvf. for sealing and gluing (use sparingly): use high filled epoxy for e lectronic packaging (e.g. glob top, underfill), and silicone. out - gassing of these materials may also contaminate the sensor (see section 2.2 ). therefore try to add the sensor as a last manufacturing step to the assembly, store the assembly well ventilated after manufacturing or bake at >50c for 24h to outgas contaminants before packing. interface specifications pin name comment 1 sda data bit - stream 2 vss ground 5 vdd supply voltage 6 scl selector for rh or t 3,4 nc not connected table 2 sht20 p pin assignment (top view) 2.6 power pins (vdd, vss) the supply voltage of sht20 p must be in the range of 2.1 C 3.6v, recommended supply voltage is 3.0v. power supply pins supply voltage (vdd) and ground (vss) must be decoupled wi th a 100nf capacitor , that shall be placed as close to the sensor as possible C see figure 9 . 2.7 scl C output selector pad scl is used to select humidity or temperature output . scl high yields humidity output, scl low yields temperature output. please note that a change of scl will affect the output on sda after maximal 1.2 seconds. figure 9 typical appl ication circuit, including decoupling of vdd and vss by a capa citor. 2.8 sda C bit stream pad on sda the sensor is providing pwm output . the signal is carrying humidity or temperature data depending on scl being high or low, respectively. see table 4 for detailed i/o characterist ic of the sensor. 3 electrical characteristics 3.1 absolute maximum ratings the electrical characteristics of sht20 p are defined in table 1 . the absolute maximum ratings as given in table 3 are stress ratings only and give additional information . functional operation of the device at these conditions is not implied. exposure to absolute maximum rating conditions for extended periods may affect the sensor reliability (e.g. hot carr ier degradation, oxide breakdown). s da scl vss vdd c = 100nf sht2x pwm bit stream select rh or t 1 6 5 2 4 3
datasheet SHT20P www.sensirion.com version 4 C may 201 4 6 / 10 parameter min max units vdd to vss - 0.3 5 v dig ital io pins (sda, scl) to vss - 0.3 vdd + 0.3 v input current on any pin - 100 100 ma table 3 electrical absolute maximum ratings esd immunity i s qualified according to jedec jesd22 - a114 method (human body model at ? 4kv), jedec jesd22 - a115 method (machine model ? 200v) and esda esd - stm5.3.1 - 1999 and aec - q100 - 011 (charged device model, 750v corner pins, 500v other pins). latch - up immunity is provide d at a force current of ? 100ma with t amb = 125c according to jedec jesd78. for exposure beyond named limits the sensor needs additional protection circuit. 3.2 input / output characteristics the electrical characteristics such as power consumption, low and hi gh level input and output voltages depend on the supply voltage. for proper communication with the sensor it is essential to make sure that signal design is strictly within the limits given in table 4 . parameter m in typ max units output low voltage, vol 0 v output high voltage, voh vdd v output sink current, iol 40 a table 4 dc characteristics of output pad . vdd = 2.1 v to 3.6 v, t = - 40 c to 125 c, unless otherwise noted. 4 comm unication with sensor 4.1 start up sensor as a first step, the sensor is powered up to vdd (between 2.1v and 3.6 v). after power - up, the sensor needs at most 150 ms for reaching idle state. during that time sda is in undefined state. then the sensor starts measu ring and providing data on pwm bit - stream. 4.2 pwm specification pulse width modulation runs on a constant frequency and the measured information is provided as duty cycle on that frequency C see figure 10 . such inform ation is measured humidity for scl pulled high and temperature for scl pulled low. figure 10 pwm signal. base frequency runs constantly at approximately 120 hz, hence t f is about 8.3ms. the signal is provided on t pw as a ratio of t f . the measured data C either humidity or temperature C is provided as ratio of t pw and t f . t pw shall always be given as ratio of t f to make it independent of variations of the base frequency. 5 conversion of signal output res olution is set to 10 bit relative humidity and 12 bit temperature reading and cannot be changed. the sensor reading is linear and hence it can be converted to a physical value by a n easy linear equation. 5.1 relative humidity conversion with the relative humid ity signal output the relative humidity rh is obtained by the following formula (result in %rh) : the physical value rh given above corresponds to the relati ve humidity above liquid water according to world meteorological organization (wmo). for relative humidity values above ice rh i the values need to be transformed as from relative humidity above water rh w at a certain temperature t follows C compare also application note introduction to humidity: units are %rh for relative humidity and c for temperature. the corresponding coefficients are defined as follows: w = 17.62, w = 243.12c, i = 22.46, i = 272.62c. 5.2 temperature conversion the temperature t is calculated by inser ting the ratio of t pw and t f into the following formula (result in c) : sd a vdd 0v t f t pw f pw t t 125 6 rh ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? t t exp t t exp rh rh i i w w w i f pw t t 175.72 46.85 t ? ? ? ?
datasheet SHT20P www.sensirion.com version 4 C may 201 4 7 / 10 6 environmental stability the sht2x sensor series were tested based on aec - q100 rev. g qualification test method where applicable . sensor specifications are tested to prevail under the aec - q100 temperature grade 1 test conditions listed in table 9 12 . sensor performance under other test conditions ca nnot be guaranteed and is not part of the sensor specifications. especially, no guarantee can be given for sensor performance in the field or for customers specific application. environment standard results 13 htol 125c, 408 hours pass tc - 50c - 125c , 1000 cycles pass uhst 130c / 85%rh / 2.3bar, 96h pass thb 85c / 85%rh, 1000h pass htsl 150c, 1000h pass elfr 125c, 48h pass esd immunity hbm ? 4kv, mm ? 200v, cdm 750v/500v (corner/other pins) pass latch - up force current of 100ma with t amb = 1 25c pass table 5 : qualification tests: ht o l = high temperature operating lifetime, tc = temperature cycles, uhst = unbiased hig hly accelerated stress test, thb = temperature humidity b iased , htsl = high temperature storage lifeti me, elfr = early life failure rate . for details on esd see sect. 4.1. if sensors are qualified for reliability and behavior in extreme conditions, please make sure that they experience same conditions as the reference sensor. it should be taken into accoun t that response times in assemblies may be longer, hence enough dwell time for the measurement shall be granted. for detailed information please consult application note qualification guide. 7 packaging 7.1 packaging type sht2x sensors are provided in dfn pack aging (in analogy with qfn packaging). dfn stands for dual flat no leads. the sensor chip is mounted to a lead frame made of cu and plated with ni/pd/au. chip and lead frame are over molded by green epoxy - based mold compound. please note that side walls of sensors are diced and hence lead 12 sensor operation temperature range is - 40 to 125c (aec - q100 temperature grade 1). 13 according to accuracy and long term drift specification given on page 2. frame at diced edge is not covered with respective protective coating. the total weight of the sensor is 25mg. 7.2 filter cap and sockets for sht2x a filter cap sf2 is available . it is designed for fast response times and com pact size. please find the datasheet on sensirions web page. for testing of sht2x sensors sockets, such as from plastronics, part number 10lq50s13030 are recommended (see e.g. www.locknest.com ). 7.3 traceability inform ation all sht20 are laser marked with an alphanumeric, five - digit code on the sensor C see figure 11 . figure 11 laser marking on sensor. for details see text. the marking on the sensor consists of two lines with five digits each. the first line denotes the sensor type ( sht20 ). the first digit of the second line defines the output mode (d = digital, sensibus and i2c, p = pwm, s = sdm). the second digit defines th e manufacturing year (0 = 2010, 1 = 2011, etc.). the last three digits eventually represent an alphanumeric tracking code. that code can be decoded by sensirion only and allows for tracking on batch level through production, calibration and testing C and w ill be provided upon justified request . reels are also labeled, as displayed in figure 12 and figure 13 , and give additional traceability information. figure 12 : first lab el on reel: xx = sensor type (20 for sht20 ), o = output mode (d = digital, p = pwm, s = sdm), nn = product revision no. , y = last digit of year, rrr = number of sensors on reel divided by 10 (200 for 20 00 units), ttttt = traceability code. sht20 p 0ac4 lot no.: xxo - nn - yrrr t tttt quantity: rrrr rohs: compliant lot no.
datasheet SHT20P www.sensirion.com version 4 C may 201 4 8 / 10 figure 13 : second label on reel: for device type and part order number (see packaging information on page 2), delivery date (also date code) is date of packaging of sensors (dd = day, mm = month, yyyy = year), cccc = sensirion order number. 7.4 shipping package sht2 x are provided in tape & reel shipment packaging, sealed into antistatic esd bags. for sht20 p s tandard packaging sizes are 1500 and 5000 units per reel. e ach reel contains 440mm (55 pockets) header tape and 200mm (25 pockets) trailer tape. the drawing of the packaging tapes with sensor orientation is shown in figure 13. the reels are provided in sealed antistatic bags. figure 14 sketch of packaging tape and sensor orientation. header tape is to the right and trailer tape to the left on this sketch. device type: 1 - 100ppp - nn description: humidity & temperature sensor shtxx part order no. 1 - 100ppp - nn or customer number date of del ivery: dd.mm.yyyy order code: 46cccc / 0 8.0 2.0 4.0 0.3 1.3 r0.3 max r0.25 ?1 . 5 min ?1 . 5 min 3.3 0.25 3.3 1.75 5.5 12.0
www.sensirion.com version 4 C may 201 4 9 / 10 revision history date version page(s) changes 19 aug 2009 0.6 1, 6 figure 1 adapted, add details to section 1.2, 5.1 and chapter 7 29 jan 2010 1.0 1 C 9 completely revised version. require change protocol for details. 5 may 2010 1.1 1 C 9 elimination of errors and addition of information (ask for change protocol) 31 may 2011 2 1 C 4, 6 C 10 updated tempe rature accuracy specifications, msl and standards. elimination of errors. for detailed information, please require complete change list at info@sensirion.com. december 2011 3 1, 7 minor text adaptations and corrections. may 2014 4 1 - 4, 7 - 8 sensor window dimension updated, several minor adjustments
datasheet SHT20P www.sensirion.com version 4 C may 201 4 10 / 10 important notices warning, personal injury do not use this product as safety or emergency stop devices or in any other application where failure of the product could result in personal injury. do not use thi s product for applications other than its intended and authorized use. before installing, handling, using or servicing this product, please consult the data sheet and application notes. failure to comply with these instructions could result in death or ser ious injury. if the buyer shall purchase or use sensirion products for any unintended or unauthorized application, buyer shall defend, indemnify and hold harmless sensirion and its officers, employees, subsidiaries, affiliates and distributors against all claims, costs, damages and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if sensirion shall be allegedly negligent with respec t to the design or the manufacture of the product. esd precautions the inherent design of this component causes it to be sensitive to electrostatic discharge (esd). to prevent esd - induced damage and/or degradation, take customary and statutory esd precauti ons when handling this product. see application note esd, latchup and emc for more information. warranty sensirion warrants solely to the original purchaser of this product for a period of 12 months (one year) from the date of delivery that this product shall be of the quality, material and workmanship defined in sensirions published specifications of the product. within such period, if proven to be defective, sensirion shall repair and/or replace this product, in sensirion s discretion, free of charge t o the buyer, provided that: ? notice in writing describing the defects shall be given to sensirion within fourteen (14) days after their appearance; ? such defects shall be found, to sensirions reasonable satisfaction, to have arisen from sensirions faulty design, material, or workmanship; ? the defective product shall be returned to sensirions factory at the buyers expense; and ? the warranty period for any repaired or replaced product shall be limited to the unexpired portion of the original period. this wa rranty does not apply to any equipment which has not been installed and used within the specifications recommended by sensirion for the intended and proper use of the equipment. except for the warranties expressly set forth herein, sensirion makes no warra nties, either express or implied, with respect to the product. any and all warranties, including without limitation, warranties of merchantability or fitness for a particular purpose, are expressly excluded and declined. sensirion is only liable for defect s of this product arising under the conditions of operation provided for in the data sheet and proper use of the goods. sensirion explicitly disclaims all warranties, express or implied, for any period during which the goods are operated or stored not in a ccordance with the technical specifications. sensirion does not assume any liability arising out of any application or use of any product or circuit and specifically disclaims any and all liability, including without limitation consequential or incidental damages. all operating parameters, including without limitation recommended parameters, must be validated for each customers applications by customers technical experts. recommended parameters can and do vary in different applications. sensirion reserves the right, without further notice, (i) to change the product specifications and/or the information in this document and (ii) to improve reliability, functions and design of this product. ? copyright 20 1 4 by s ensirion . cmosens ? is a trademark of sensirion all rights reserved headquarters and subsidiaries sensirion ag laubisruetistr. 50 ch - 8712 staefa zh switzerland phone: +41 44 306 40 00 fax: +41 44 306 40 30 info@sensirion.com www.sensirion.com sensirion inc., usa phone: +1 805 409 4900 info_us@sensirion.com www.sensirion.com sensirion japan co. ltd. phone: +81 3 3444 4940 info@sensirion.co.jp www.sensirion.co.jp sensirion korea co. ltd. phone: +82 31 337 7700~3 info@sensirion.co.kr www.sensirion.co.kr sensirion china co. ltd. phone: +86 755 8252 1501 info@sensirion.com.cn www.sensirion.com .cn sensirion ag (germany) phone: +41 44 927 11 66 info@sensirion.com www.sensirion.com to find your local representative, please visit www.sensirion.com/conta ct
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