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page 1 of 20 ?2011 knowles electronics 2403 260 00031 ra 8 x 12 x 2 receiver
page 2 of 20 ?2011 knowles electronics release C r evision: h 2403 260 00031 contents 1. theory of operation ............................................................................................................................. 3 2. mechanical layout and dimensions .................................................................................................... 4 2.1. main dimensions ......................................................................................................................... 4 2.2. pwb layout ................................................................................................................................. 5 2.3. pick and place layout ................................................................................................................... 5 2.4. spring force ................................................................................................................................. 6 2.5. part ma rking/labeling ................................................................................................................. 7 2.6. force on component ................................................................................................................... 8 2.7. material list ................................................................................................................................. 9 3. electrical and acoustical specifications ............................................................................................. 10 3.1. frequency response .................................................................................................................. 10 3.2. electro - acoustic parameters ..................................................................................................... 11 3.3. power handling .......................................................................................................................... 11 3.4. measurement setup .................................................................................................................. 12 3.5. m easured parameters ............................................................................................................... 12 3.6. measurement adapter .............................................................................................................. 13 4. environmental conditions ................................................................................................................. 14 4.1. storage ....................................................................................................................................... 14 4.2. transportat ion ........................................................................................................................... 14 4.3. functionality .............................................................................................................................. 14 5. environmental tests .......................................................................................................................... 15 5.1. q ualification tests ...................................................................................................................... 15 5.2. reliability tests .......................................................................................................................... 15 5.3. sample size, sequence .............................................................................................................. 15 5.4. period of shelf - life .................................................................................................................... 15 5. 5. testing procedures .................................................................................................................... 15 6. related documents ........................................................................................................................... 19 7. change history .................................................................................................................................. 20 8. disclaimer .......................................................................................................................................... 20
page 3 of 20 ?2011 knowles electronics release C r evision: h 2403 260 00031 1. theory of operation ra x 8 x 12 x 2 rec eiver is a high end micro size receiver specifically designed for mobile phone and other applications where high quality sound is needed and only very little space for components is available.
page 4 of 20 ?2011 knowles electronics release C r evision: h 2403 260 00031 2. mechani cal layout and dimensions 2.1. main dimensions
page 5 of 20 ?2011 knowles electronics release C r evision: h 2403 260 00031 2.2. pwb layout 2.3. pick and place layout positive voltage on pin + moves membrane in direction of arrow
page 6 of 20 ?2011 knowles electronics release C r evision: h 2403 260 00031 2.4. spring force
page 7 of 20 ?2011 knowles electronics release C r evision: h 2403 260 00031 2.5. part marking/labeling the samples have a serial number on bottom (pot) side
page 8 of 20 ?2011 knowles electronics release C r evision: h 2403 260 00031 2.6. force on component forces on different state of component state min. surface of preasure [mm2] max permanent force [n] max handling force [n] from front to back (basket) - 10 15 from side 1 to side 1 3 10 15 from side 2 to side 2 10 10 15 pot - 0 3 membrane - 0 0 pull of force (cover/basket) - 0 5
page 9 of 20 ?2011 knowles electronics release C r evision: h 2403 260 00031 2.7. material list 1. material of basket: polycarbonate 2. material of membrane: polyarylate - compound 3. material of pot: soft magnetic iron 4. material of magnet: nd fe b 5. material of contact crni - steel, gold plated 6. material of cover: crni - steel 7. dimensions: 12x8x2.0mm 8. mass: 0.55g
page 10 of 20 ?2011 knowles electronics release C r evision: h 2403 260 00031 3. electrical and acoustical specifications 3.1. frequency response typical frequency response measured on baffle according to chapter 3.4 (distance d = 1cm, p= 5mw, without back cavity) tolerance window f [hz] lower limit [db spl] upper limit [db spl] f [hz] upper limit [%thd] 100 61 78 300 40 300 - 92 400 20 400 85 - 600 5 500 -- 92 6300 5 1000 82 88 3000 82 88 6000 87 97 7000 72 - 8000 - 97 10000 72 87 50 55 60 65 70 75 80 85 90 95 100 100 1000 10000 100000 f spl [db rel 20upa] 0 5 10 15 20 25 30 35 40 45 50 thd [%]
page 11 of 20 ?2011 knowles electronics release C r evision: h 2403 260 00031 3.2. electro - acoustic parameters loudspeaker mounted in adapter acc. to 3.6 . 1. rated impedance z: 32 ? 2. voice coil resistance r: 28.8 ? 10% 3. resonance frequency (m easured @5mw) f 0 : 350hz15% 4. maximum usable excursion x max p - p : 0.34mm p - p 5. nominal characteristic sensitivity (calculated for 1w in 1m) 682db average from 1khz to 3khz 5.1. measured characteristic sensitivity (at 5mw in 1cm) 852db average from 1khz to 3khz 6. thd according chapter 3.1 . 7. rub & buzz < 60dbspl (300hz - 1500hz) in 1cm at 5mw (400mv eff ) all acoustic measurements at 23 2c 3.3. power handling receiver mounted in lifetime test device (open rear/open front) (pink noise shaped according to diagram below, crest factor 2) 1. max short term power (1sec. on / 3sec. off) 75mw (rms) 2. max continuous power (500h) 40mw (rms) spectrum of life time test signal -50 -40 -30 -20 -10 0 10 100 1000 10000 frequenz [hz] dbrel
page 12 of 20 ?2011 knowles electronics release C r evision: h 2403 260 00031 3.4. measurement setup 3.5. measured parameters 3.5.1. sensitivity spl is expressed in db rel 20 pa, computed according to iec 268 - 5. measurement set up and parameters according chapter 3.4 . this test is performed for 100% of products in the production line. 3.5.2. frequency response frequency response is measured according test set up in chapter 3.4 data sheet and checked against the tolerance window defined in chapter 3.1 . this test is performed for 100% of products in the production line. 3.5.3. total harmonic distortion (thd) is measured according iec 268 - 5 (2nd to 5th harmonics) and test set up in chapter 3.4 . this test is performed for 100% of products in the production line. 3.5.4. rub& buzz rub & buzz will be measured in the inline - measuring device with a sinusoidal sweep. rub & buzz is defined as the maximum level of no harmonic energy, expressed as signal to non - harmonic content ratio, in a certain frequency - range. signal and evaluation criteria are according to chapter 3.2 . this test is performed for 100% of products in the production line. d analyzer power amplifier iec baffle freefield microphone 1/4 r q,including wiring <0,3 ?
page 13 of 20 ?2011 knowles electronics release C r evision: h 2403 260 00031 3.6. measurement adapter
page 14 of 20 ?2011 knowles electronics release C r evision: h 2403 260 00031 4. environmental conditions 4.1. storage the transducer fulfils the specified data after treatment according to the conditions of ets 300 019 - 2 - 1 specification of environmental test: storage test spec. t 1.2: weather protected, not temperature controlled storage locations. 4.2. transportation the transducer fulfils the specified data after treatment according to the conditions of ets 300 019 - 2 - 2 specification of environmental test: transportation test spec. t 2.3: public transportation 4.3. functionality the transducer fulfils the specified data after treatment accor ding to the conditions of ets 300 019 - 2 - 5 specification of environmental test: ground vehicle installations test spec. t 5.1: protected installation ets 300 019 - 2 - 7 specification of environmental test: portable and non - stationary use test spec. t 7.3e: partly weather protected and non - weather protected locations.
page 15 of 20 ?2011 knowles electronics release C r evision: h 2403 260 00031 5. environmental tests 5.1. qualification tests according to our milestone plan (product creation process), a complete qualification test will be done at design validation of products manufactured under serial conditions. 1x per year and product family a requalification takes place. the qualification process covers all tests described under 5.5 and a complete inspection. 5.2. reliability tests 1x per month and product family samples are taken and submitted to tests described under 5.5.2 5.3. sample size, sequence u nless otherwise stated 20 arbitrary new samples will be used to perform each test for both, qualification and requalification test as described under 5.1 and 5.2 . 5.4. period of shelf - life the period of shelf - life is 2 years. 5.5. testing procedures 5.5.1. storage tests 5.5.1.1. low temperature storage test parameter t est method and conditions duration evaluation standard low temperature storage (ref. en 60068 - 2 - 1) - 40 c rel. humidity not controlled 168h measurements after 2 hours recovery time. all samples fully operable. all acoustical parameters according specification with tolerances increased by 50 %. 5.5.1.2. high temperature storage test parameter test method and conditions duration evaluation standard dry heat storage (ref. en 60068 - 2 - 2) +85 c rel. humidity not controlled 168h measurements after 2 hours recovery time. all samples fully operable. all acoustical parameters according specification with tolerances increased by 50 %.
page 16 of 20 ?2011 knowles electronics release C r evision: h 2403 260 00031 5.5.1.3. temperature cycle test parameter test method and conditions duration evaluation standard change of temperature (ref. en 60068 - 2 - 14) - 40 c/+85 c transition time <3 min. see figure 5 - 1 below 5 cycles >2h for each temperature measurements after 2 hours recovery time. all samples fully ope rable. all acoustical parameters according specification with tolerances increased by 50 %. -40c +85c 2h 2h 3m 3m 2h 2h 3m 3m 2h 2h 3m 3m 2h 2h 3m 3m 3m 3m 2h 2h figure 5 - 1 : temperature cycle test 5.5.1.4. temperature / humidity cycle test parameter test method and conditions duration evaluation standard damp heat, cyclic (ref. iec 60068 - 2 - 30) +25 c/+55 c 90% to 95% rh. temp. change time <3h see figure 5 - 2 below caution: no condensed water on products! 6 cycles. 24h at each temperature measurements after 2 hours recovery time. all samples fully operable. all acoustical parameters according specification with tolerances increased by 50 %. +25c +55c 9h 9h 3h 3h 9h 9h 3h 3h 9h 9h 3h 3h 9h 9h 3h 3h 9h 9h 3h 3h 9h 9h 3h 3h figure 5 - 2 : temperature / relative humidity cycle test
page 17 of 20 ?2011 knowles electronics release C r evision: h 2403 260 00031 5.5.2. operating tests 5.5.2.1. cold operation test parameter test method and conditions duration evaluation standard cold operation test (ref. en 60068 - 2 - 1) - 20 c rel. humidity not controlled signal acc. chapter error! reference source not found. 72h measurements after 2 hours recovery time. all samples fully operable. thd may be increased after test. all other acoustical parameters according specification with tolerances increased by 50 %. 5.5.2.2. dry heat operation test parameter test method and conditions duration evaluation standard dry heat operation (ref. en 60068 - 2 - 2) +70 c rel. humidity not controlled signal acc. chapter error! reference source not found. 500h measurements after 2 hours recovery time. all samples fully operable. the allowable change in sensitivity shall not be greater than 3 db. all other acoustical parameters according specification with tolerances increased by 50 %. 5.5.3. salt mist test parameter test method and conditions duration evaluation standard salt mist (ref. iec60068 - 2 - 52, kb / severity 2 the part must be subjected to 2 hours spray of 5% nacl salt mist, at 35c then be left at 40 c and 95% rh for 22h. 3 cycles the samples shall be washed after the test with distilled water and dried at t< 50c. component may have reduced performance, but mu st still function properly. the allowable sensitivity difference shall not be greater than 3db from initial sensitivity.
page 18 of 20 ?2011 knowles electronics release C r evision: h 2403 260 00031 5.5.4. shock resistance test (free fall test) - unprotected product parameter test method and conditions conditions / sample size evaluation standard mechanical shock (ref. iec60068 - 2 - 32 ed), procedure 1 drop of sample without fixation of release plane from a height of 1.5m onto concrete floor. each 3 shocks in both directions of the 3 axes. (18 drops in total) component may have re duced performance, but must still function properly. the allowable sensitivity difference shall not be greater than 3db from initial sensitivity. 5.5.5. impact durability test (tumble test) ? protected product parameter test method and conditions conditions / sample size evaluation standard impact durability (in a tumble tester) (ref. iec60068 - 2 - 32 ed) (spr a7.1.1) speaker in drop test box or representative mechanics. random drops on steel base. 30 units 180 drops, 1m dut power off component may have reduced performance, but must still function properly. the allowable sensitivity difference shall not be greater than 3 db from initial sensitivity. 5.5.6. resistance to electrostatic discharge parameter test method and conditions conditions / sample size evaluation s tandard resistance to esd iec61000 - 4 - 2 level 4 (spr c 2.5.1) one pole is grounded and the esd pulse is applied to the other pole. the speaker must be stressed first with one polarisation and then with the other polarisation. dut must be discharged between each esd exposure. level 4: contact +/ - 8kv, air +/ - 15kv 10 exposures on each polarity / 5 units dut power off all samples fully operable. all acoustical parameters according specification with tolerances increased by 50%.
page 19 of 20 ?2011 knowles electronics release C r evision: h 2403 260 00031 6. related documents iec 268 - 5 sound system equipment part 5: loudspeaker iec 68 - 2 environmental testing en 60068 - 2 environmental testing iso 2859 - 1 sampling procedures for inspection by attributes part 1: sampling plans indexed by acceptable quality level (aql) for lot - by - lot inspec tion iso 3951 sampling procedures and charts for inspection by variables for percent defectives. ets 300 019 - 2 - 1 specification of environmental test: storage test spec. t 1.2: weather protected, not temperature controlled storage locations ets 300 019 - 2 - 2 specification of environmental test: transportation test spec. t 2.3: public transportation ets 300 019 - 2 - 5 specification of environmental test: ground vehicle installations test spec. t 5.1: protected installation ets 300 019 - 2 - 7 specification of env ironmental test: portable and non - stationary use test spec. t 7.3e: partly weather protected and non - weather protected locations
page 20 of 20 ?2011 knowles electronics release C r evision: h 2403 260 00031 7. change history status version date ecr comment / changes initials of owner obsolete a 15.06.07 2197 part marking/spring force diagram/pwb layout ml/ah obsolete b 23.01.08 2113 handling force pot fl/ah obsolete c 20.02.08 2115 part marking fl/ah obsolete d 09.02.09 2389 change permanent force/add dimension (rib height) fl/as obsolete e 06.10.09 2568 change height and tolerance of receiver fl obsolete f 13.11.09 2632 change pick and place l ayout fl obsolete g 30.03.10 2802 update legal disclaimer/logo cp obsolete h 23.03.11 3118 migration nxp to knowles template cp release i 07.11.11 3201 update environmental section cp 8. disclaimer stresses above the absolute maximum ratings may cause permanent damage to the device. these are stress ratings only. the device may not function when operated at these or any other conditions beyond th ose indicated under electrical and acoustical specifications. exposure beyond those indicated under electrical and acoustical specifications for extended periods may affect device reliability. the information contained in this literature is based on our experience to date and is believed to be reliable and it is subj ect to change without notice. it is intended as a guide for use by persons having technical skill at their own discretion and risk. we do not guarantee favorable results or as sume any liability in connection with its use. dimensions contained herein are for reference purposes only. for specific dimensiona l requirements consult factory. this publication is not to be taken as a license to operate under, or recommendation to infringe any exiting patents. this supersedes and void s all previous literature. this product is not qualified f or use in automotive applications frequency range in telecom application: 300 hz C 3,4 khz

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