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page 1 of 19 ?2011 knowles electronics 2403 260 00051 receiver - 612 - 2 - sc
page 2 of 19 ?2011 knowles electronics release C revision: f 2403 260 00051 contents 1. theory of operation ............................................................................................................................. 3 2. mechanical layout and dimensions .................................................................................................... 4 2.1. main dimensions ......................................................................................................................... 4 2.2 . pwb layout ................................................................................................................................. 5 2.3. spring force ................................................................................................................................. 5 2.4. force on component ................................................................................................................... 6 2.5. part marking/labeling ................................................................................................................. 7 2.6. material list ................................................................................................................................. 8 3. electrical and acoustical specifications ............................................................................................... 9 3.1. frequency response .................................................................................................................... 9 3.2. electro - acoustic parameters ..................................................................................................... 10 3.3. power handling .......................................................................................................................... 10 3.4. measurement setup .................................................................................................................. 11 3.5. measured parameters ............................................................................................................... 11 3.6. measurement adapter .............................................................................................................. 12 4. environmental condition s ................................................................................................................. 13 4.1. storage ....................................................................................................................................... 13 4.2. transportation ........................................................................................................................... 13 4.3. functionality .............................................................................................................................. 13 5. environmental tests .......................................................................................................................... 14 5.1. qualification tests ...................................................................................................................... 14 5.2. reliability tests .......................................................................................................................... 14 5.3. sample size, sequence .............................................................................................................. 14 5.4. period of shelf - life .................................................................................................................... 14 5.5. testing procedures .................................................................................................................... 14 6. related documents ........................................................................................................................... 18 7. change history .................................................................................................................................. 19 8. disclaimer .......................................................................................................................................... 19
page 3 of 19 ?2011 knowles electronics release C revision: f 2403 260 00051 1. theory of operation receiver 612 - 2 - sc 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 19 ?2011 knowles electronics release C revision: f 2403 260 00051 2. mechani cal layout and dimensions 2.1. main dimensions
page 5 of 19 ?2011 knowles electronics release C revision: f 2403 260 00051 2.2. pwb layout 2.3. spring force
page 6 of 19 ?2011 knowles electronics release C revision: f 2403 260 00051 2.4. 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 - 10 15 from side 1 to side 1 3 10 15 from side 2 to side 2 10 10 15 pot - 0 10 membrane - 0 0 pull of force (cover) - 0 5
page 7 of 19 ?2011 knowles electronics release C revision: f 2403 260 00051 2.5. part marking/labeling the samples have a serial number on bottom (pot) side
page 8 of 19 ?2011 knowles electronics release C revision: f 2403 260 00051 2.6. material list 1. material of basket: polycarbonate (halogen free) 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: brass 7. dimensions: 6x12x2 mm 8. mass: 0,35 g
page 9 of 19 ?2011 knowles electronics release C revision: f 2403 260 00051 3. electrical and acoustical specifications 3.1. frequency response typical frequency response measured on baffle according to chapter 2.4 (distance d = 1cm, p= 10mw, without back cavity) tolerance window f [hz] lower limit [db spl] (floating) upper limit [db spl] (floating) f [hz] upper limit [%thd] 160 70 80 300 40 300 85 94 400 20 350 88 - 600 5 400 88 94 6300 5 1000 83 87 2500 83 87 4000 84 89 7500 88 96 8000 75 - 10000 75 96
page 10 of 19 ?2011 knowles electronics release C revision: f 2403 260 00051 3.2. electro - acoustic parameters loudspeaker mounted in adapter acc. to 2.6 . 1. rated impedance z: 32 ? 2. voice coil resistance r: 28.8 ? 10% 3. resonance frequency (measured @10mw) f 0 : 350hz15% 4. maximum usable excursion x max p - p : 0.6mm p - p 5. nominal characteristic sensitivity (calculated for 1w in 1m) 652db average from 1khz to 3khz 5.1. measured characteristic sensitivity (at 10mw in 1cm) 852db average from 1khz to 3khz 6. thd according chapter 2.1 . 7. rub & buzz < 60dbspl (300hz - 1500hz) in 1cm at 10mw (566mv eff ) all acoustic measurements at 23 2c 3.3. power handling receiver mounted in lifetime test device (open rear/open front) 1. max short term power 75 mw (rms) signal: pink noise hp 2 nd order 800hz , lp 10 th order 6,3khz, crest factor 2 2. max continuous power (500h) 10mw (rms) signal: pink noise shaped according to diagram below: hp10 th order 100hz, hp 2 nd order 400hz, lp 10 th order 6,3khz, crest factor 2
page 11 of 19 ?2011 knowles electronics release C revision: f 2403 260 00051 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 toleranc e 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 chapt er 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 12 of 19 ?2011 knowles electronics release C revision: f 2403 260 00051 3.6. measurement adapter
page 13 of 19 ?2011 knowles electronics release C revision: f 2403 260 00051 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 according 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 14 of 19 ?2011 knowles electronics release C revision: f 2403 260 00051 5. environmental tests 5.1. qualification tests according to our milestone plan (product creation process), a complete quali fication 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 unless 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 test 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 15 of 19 ?2011 knowles electronics release C revision: f 2403 260 00051 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 operable. all acoustical parameters according specifica tion 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 %. figure 5 - 2 : temperature / relative humidity cycle test 5.5.2. +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
page 16 of 19 ?2011 knowles electronics release C revision: f 2403 260 00051 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 3.3 72h measurements after 2 hours recovery time. all samples fully operable. thd may be increased afte r 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 3.3 500h measurements after 2 hours recovery time. all samples fully operable. the allowable change in sensitivity sh all 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 17 of 19 ?2011 knowles electronics release C revision: f 2403 260 00051 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 18 of 19 ?2011 knowles electronics release C revision: f 2403 260 00051 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 19 of 19 ?2011 knowles electronics release C revision: f 2403 260 00051 7. change history status version date ecr comment / changes initials of owner obsolete a 19.08.10 2909 first release cp/et/as obsolete b 07.01.11 3055 update frequency response/lifetime test signal ah obsolete c 24.03.11 3125 update printing code/migration to knowles template sa/cp obsolete d 26.05.11 3180 update printing code illustration /shelf life cp /pd obsolete e 26.07.11 3207 shelf life 2 years cp release f 0 3.01.12 3 428 correct thd curve/new frontpage picture change of short term max power ol/cp / ah 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 ex tended 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 subject 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 assume any liability in connectio n with its use. dimensions contained herein are for reference purposes only. for specific dimensional requirements consult fa ctory. this publication is not to be taken as a license to operate under, or recommendation to infringe any exiting patents. this s upersedes and voids 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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