2403-260-00001 11x15x3.5 MM SPEAKER The 11 x 15 x 3.5 mm rectangular speaker is a high end miniature speaker specifically designed for portable devices, music phones and smartphones where high quality sound is required. It delivers pure , uncolored sound reproduction in applications with small space. Suitable for mono and stereo applications. Features: • • • • • Page 1 of 19 Flat, wide frequency response Low resonance frequency (800Hz) in 1cm³ closed back cavity Compound membrane with additional stiffening plate for inner damping and low THD Extremely robust spring connector 100% in-line measurement of all specified acoustical and electrical parameters ©2011 Knowles Electronics 2403-260-00001 Contents 1. Theory of operation............................................................................................................................. 3 2. Mechanical Layout and Dimensions.................................................................................................... 4 2.1. Main Dimensions .........................................................................................................................4 2.2. Spring Force .................................................................................................................................4 2.3. Pad layout ....................................................................................................................................5 2.4. Force layout .................................................................................................................................5 2.5. Material list..................................................................................................................................6 2.6. Part marking ................................................................................................................................6 3. Electrical and Acoustical Specifications............................................................................................... 7 3.1. Frequency response ....................................................................................................................7 3.2. Excursion .....................................................................................................................................8 3.3. Electro-acoustic characteristics acc. IEC 268-5 ...........................................................................9 3.4. Measurement setup ..................................................................................................................10 3.5. Measurement adapter 1 cm³ ....................................................................................................11 3.6. Measured Parameters ...............................................................................................................12 4. Environmental Conditions ................................................................................................................. 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 Release – Revision: M Page 2 of 19 ©2011 Knowles Electronics 2403-260-00001 1. Theory of operation The 11x15x3.5 rectangular speaker is an electro dynamic transducer, designed to translate electrical analog signals into sound. The input signal is fed into a coil in a magnetic field, which is attached to a membrane. Through the principle of the electromagnetic force, the membrane is moved according to the contents of the input signal. Release – Revision: M Page 3 of 19 ©2011 Knowles Electronics 2403-260-00001 2. Mechanical Layout and Dimensions 2.1. Main Dimensions 2.2. Spring Force Release – Revision: M Page 4 of 19 ©2011 Knowles Electronics 2403-260-00001 2.3. Pad layout 2.4. Force layout Release – Revision: M Page 5 of 19 ©2011 Knowles Electronics 2403-260-00001 2.5. Material list 1. MATERIAL of BASKET: Polycarbonate 2. MATERIAL of MEMBRANE: 3. MATERIAL of POT: 4. MATERIAL of MAGNET: Nd Fe B /N42 5. MATERIAL of CONTACT CrNi-Steel, gold plated 6. MATERIAL of COVER: Polycarbonate 7. DIMENSION: 15x11x3.5mm 8. MASS: 1.6g Polyarylate-Compound soft magnetic Iron 2.6. Part marking Release – Revision: M Page 6 of 19 ©2011 Knowles Electronics 2403-260-00001 3. Electrical and Acoustical Specifications 3.1. Frequency response TYPICAL FREQUENCY RESPONSE measured in Baffle according to 3.4 (distance d = 10cm, with back cavity 1cm³ at 350mW) f [Hz] 300 770 890 2000 5000 6300 9000 11000 13000 20000 Release – Revision: M lower limit [ SPL floating] 67 91 91 87 87 87 91 93 75 75 Tolerance window upper limit f [ SPL floating] [Hz] 81 300 98 500 98 750 92,5 1500 92,5 2000 95 15000 100 106 106 106 Page 7 of 19 upper limit [%THD] 25 18 18 5 3 3 ©2011 Knowles Electronics 2403-260-00001 3.2. Excursion Release – Revision: M Page 8 of 19 ©2011 Knowles Electronics 2403-260-00001 3.3. Electro-acoustic characteristics acc. IEC 268-5 3.3.1. LOUDSPEAKER IN 1cm³ MEASUREMENT ADAPTER ACC. TO 3.4 1. RATED IMPEDANCE Z: 8Ω 2. VOICE COIL RESISTANCE R: 7.4Ω ± 10% 3. RESONANCE FREQUENCY f0: 800Hz ± 7.5% 4. MAXIMUM LINEAR EXCURSION Xmax: +/- 0.30mm 5. CHARACT. SENSITIVITY (1W in 1m) average from 2kHz to 5kHz 73 ± 2dB 6. THD according to Sheet 190 - 3 7. RUB & BUZZ at 350mW 3.3.2. LOUDSPEAKER IN BAFFLE WITHOUT BACK CAVITY 1. TYPICAL RESONANCE FREQUENCY 3.3.3. no audible rub & buzz f0: 450Hz Loudspeaker mounted in Lifetime test device (closed Box 2ccm, open front) Signal IEC268-1 with high-pass 12dB/Oct. at 800Hz, crest factor 2, used for all operating lifetime tests 1. MAX.SHORT TERM POWER 1sec ON, 1min. OFF, 60 cycles Ambient temperature 70°C 1000mW 2. MAX LONG TERM POWER 1min ON, 2min. OFF, 10 cycles Ambient temperature 70°C 600mW 3. MAX. NOISE POWER (PHC continuous) 500h Ambient temperature 70°C 500mW Release – Revision: M Page 9 of 19 ©2011 Knowles Electronics 2403-260-00001 3.4. Measurement setup Release – Revision: M Page 10 of 19 ©2011 Knowles Electronics 2403-260-00001 3.5. Measurement adapter 1 cm³ Release – Revision: M Page 11 of 19 ©2011 Knowles Electronics 2403-260-00001 3.6. Measured Parameters 3.6.1. Sensitivity SPL is expressed in dB rel 20µPa, 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. 3.6.2. 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. 3.6.3. 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. 3.6.4. 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 3.3. This test is performed for 100% of products in the production line. Release – Revision: M Page 12 of 19 ©2011 Knowles Electronics 2403-260-00001 4. Environmental Conditions 4.1. Storage The transducer fulfills 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 fulfills 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 fulfills the specified data after treatment according to the conditions of ETS 300 019-2-5 ETS 300 019-2-7 Release – Revision: M Specification of environmental test: Ground vehicle installations Test spec. T 5.1: Protected installation Specification of environmental test: Portable and non-stationary use Test spec. T 7.3E: Partly weather protected and non-weather protected locations. Page 13 of 19 ©2011 Knowles Electronics 2403-260-00001 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 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. Cold Storage Test Parameter Test Method and Conditions Duration Evaluation Standard Low Temperature Storage -40°C 168h Measurements after 2 hours recovery time. (Ref. EN 60068-2-1) rel. humidity not controlled All samples fully operable. All acoustical parameters according specification with tolerances increased by 50 %. 5.5.1.2. Heat Storage Test Parameter Test Method and Conditions Duration Evaluation Standard Dry Heat Storage +85°C 168h (Ref. EN 60068-2-2) rel. humidity not controlled Measurements after 2 hours recovery time. All samples fully operable. All acoustical parameters according specification with tolerances increased by 50 %. Release – Revision: M Page 14 of 19 ©2011 Knowles Electronics 2403-260-00001 5.5.1.3. Temperature Cycle Test Parameter Test Method and Conditions Duration Evaluation Standard Change of Temperature -40°C/+85°C 5 cycles (Ref. EN 60068-2-14) Transition time <3 min. See Figure 5-1 below >2h for each temperature Measurements after 2 hours recovery time. All samples fully operable. All acoustical parameters according specification with tolerances increased by 50 %. +85°C -40°C 2h 3m 2h 3m 2h 3m 2h 3m 2h 3m 2h 3m 2h 3m 2h 3m 2h 3m 2h 3m 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 +25°C/+55°C 6 cycles / 144h (Ref. IEC 60068-2-30) 90% to 95% RH. 12h at each temperature (inclusive temp ramp up/down) Measurements after 2 hours recovery time. Temp. change time <3h See Figure 5-2 below Caution: no condensed water on products! All samples fully operable. All acoustical parameters according specification with tolerances increased by 50 %. +55°C +25°C 9h 3h 9h 3h 9h 3h 9h 3h 9h 3h 9h 3h 9h 3h 9h 3h 9h 3h 9h 3h 9h 3h 9h 3h Figure 5-2: Temperature / Relative Humidity Cycle Test Release – Revision: M Page 15 of 19 ©2011 Knowles Electronics 2403-260-00001 5.5.2. Operating Tests 5.5.2.1. Cold Operation Test Parameter Test Method and Conditions Duration Evaluation Standard Cold Operation Test -20°C 72h (Ref. EN 60068-2-1) rel. humidity not controlled 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 %. signal acc. Chapter 3.3.3. 5.5.2.2. Dry Heat Operation Test Parameter Test Method and Conditions Duration Evaluation Standard Dry Heat Operation +70°C 500h (Ref. EN 60068-2-2) rel. humidity not controlled 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 %. signal acc. Chapter 3.3.3. 5.5.3. Salt Mist Test Parameter Test Method and Conditions Duration Evaluation Standard Salt Mist The part must be subjected to 2 hours spray of 5% NaCl salt mist, at 35°C 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< 50°C. (Ref. IEC60068-2-52, Kb / Severity 2 Release – Revision: M Component may have reduced performance, but must still function properly. The allowable sensitivity difference shall not be greater than ±3dB from initial sensitivity. Page 16 of 19 ©2011 Knowles Electronics 2403-260-00001 5.5.4. Guided Free Fall Test - protected product Parameter Test Method and Conditions Conditions / Sample size Evaluation Standard Mechanical shock Speaker in drop test box or representative mechanics from a height of 1.5m onto concrete floor. 30 units Two drops on each side (2x6) Component may have reduced performance, but must still function properly. The allowable sensitivity difference shall not be greater than ±3dB from initial sensitivity. (Ref. IEC60068-2-32 Ed), Procedure 1 One drop on each edge (1x12) Two drops on each corner (2x8) (40 drops in total) 5.5.5. Random Free Fall Test (Tumble Test) – protected product Parameter Test Method and Conditions Conditions / Sample size Evaluation Standard Impact durability (in a Tumble Tester) Speaker in drop test box or representative mechanics. Random drops on steel base. 30 units Component may have reduced performance, but must still function properly. The allowable sensitivity difference shall not be greater than ±3 dB from initial sensitivity. (Ref. IEC60068-2-32 Ed) 180 drops, 1m DUT power off (SPR a7.1.1) 5.5.6. Resistance to Electrostatic Discharge Parameter Test Method and Conditions Conditions / Sample size Evaluation Standard Resistance to ESD 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. 10 exposures on each polarity / 5 units All samples fully operable. IEC61000-4-2 Level 4 (SPR c 2.5.1) DUT Power off All acoustical parameters according specification with tolerances increased by 50%. Level 4: contact +/- 8kV, air +/- 15kV Release – Revision: M Page 17 of 19 ©2011 Knowles Electronics 2403-260-00001 6. Related Documents IEC 268-5 IEC 68-2 EN 60068-2 ISO 2859 - 1 ISO 3951 ETS 300 019-2-1 ETS 300 019-2-2 ETS 300 019-2-5 ETS 300 019-2-7 Release – Revision: M Sound System equipment Part 5: Loudspeaker Environmental testing Environmental testing Sampling procedures for inspection by attributes Part 1: Sampling plans indexed by acceptable quality level (AQL) for lot-by-lot inspection Sampling procedures and charts for inspection by variables for percent defectives. Specification of environmental test: Storage Test spec. T 1.2: Weather protected, not temperature controlled storage locations Specification of environmental test: Transportation Test spec. T 2.3: Public Transportation Specification of environmental test: Ground vehicle installations Test spec. T 5.1: Protected installation Specification of environmental test: Portable and non-stationary use Test spec. T 7.3E: Partly weather protected and non-weather protected locations Page 18 of 19 ©2011 Knowles Electronics 2403-260-00001 7. Change History Status Version Date ECR Comment / Changes Initials of owner Obsolete A 22.05.05 First release Obsolete B 17.05.05 898 Second revision Obsolete C 16.06.05 1011 Third revision Obsolete D 11.07.05 1089 Change cover outer shape MS Obsolete E 06.12.05 1453 Stamp print/resonance frequency diagram AH Obsolete F 21.03.06 1612 Stamp/floating tolerance/test signal AH Obsolete G 08.11.06 1738 Rebranding Philips to NXP CP Obsolete H 01.02.10 2705 Dimensioning contact position/spring force curve FL Obsolete I 29.03.10 2802 Update legal disclaimer/update logo and template CP Obsolete J 08.06.10 2865 Update material list CP Obsolete K 23.03.11 3062 SA/CP HB/CP CP/RB/HB Obsolete L 12.09.11 3298 Contact height tolerance/Migration to Knowles template Rephrase theory of operation/remove word “RA” Release M 09.07.12 3767 Publish document to newest template version 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 those indicated under “Electrical and Acoustical Specifications”. Exposure beyond those indicated under “Electrical and Acoustical Specifications” for extended periods may affect device reliability. This product is not qualified for use in automotive applications Frequency range for Telekom use 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 connection with its use. Dimensions contained herein are for reference purposes only. For specific dimensional 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 voids all previous literature. Release – Revision: M Page 19 of 19 ©2011 Knowles Electronics