KNOWLES 2403-260

2403 260 00041
RA RECEIVER 10 X 4.8 X 2 MM WITH MESH
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©2011 Knowles Electronics
2403 260 00041
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 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
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©2011 Knowles Electronics
2403 260 00041
1.
Theory of operation
Ra Receiver 10 x 4,8 x 2 with mesh 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.
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©2011 Knowles Electronics
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2.
Mechanical Layout and Dimensions
2.1. Main Dimensions
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©2011 Knowles Electronics
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2.2. PWB Layout
2.3. Spring Force
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©2011 Knowles Electronics
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2.4. Force on component
SIDE 1
SIDE 1
SIDE 1
POT
SIDE 2
FRONT
FRONT
BACK
BACK
PULL (BASKET)
MEMBRANE
FORCES ON DIFFERENT STATE OF COMPONENT
STATE
FROM FRONT TO BACK
FROM SIDE 1 TO SIDE 1
FROM SIDE 2 TO SIDE 2
POT
MEMBRANE
PULL OF FORCE
MIN. SURFACE
OF PRESSURE
[mm²]
3
10
-
MAX
PERMANENT
FORCE [N]
5
5
5
0
0
0.15
MAX HANDLING
FORCE [N]
15
15
15
0
0
5
(ADHESIVE/BASKET)
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©2011 Knowles Electronics
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2.5. Part Marking/Labeling
The samples have a serial number on bottom (pot) side
VARIANT A – Laser Printing
V14_B6344_33_53C4
Internal Code
Edition Code
Time 00 - 96 = 00:00 - 23:59
Free Space
Line A=L1, B=L2 . . .
Free Space
Date (ywwd)
VARIANT B – Inkjet Printing
A10 S6344 33
Edition Code
Time 00 - 96 = 00:00 –23:59
Line
Date (ywwd)
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©2011 Knowles Electronics
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2.6. Material List
1. MATERIAL of BASKET:
Polycarbonat (Halogen free)
2. MATERIAL of MEMBRANE:
Polyarylat-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:
CuZn
7. FRONT ADHESIVE :
Acrylic
8. DIMENSION:
10x4,8x2
9. MASS:
0,2 g
10. STAMP
numbered by production sequence
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©2011 Knowles Electronics
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3.
Electrical and Acoustical Specifications
3.1. Frequency response
100
100
95
90
90
80
85
70
80
60
75
50
70
40
65
30
60
20
55
10
50
100
1000
THD [%]
SPL [dB rel 20uPa]
TYPICAL FREQUENCY RESPONSE measured on Baffle according to
Chapter 3.4 : distance d = 1cm, p= 10 mW, open back)
0
100000
10000
f
f
Hz
300
450
600
700
2000
4500
6500
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Tolerance window
lower limit
upper limit
[db SPL]
[db SPL]
67
83
94
86
94
94
82
82
82
88
88
91
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f
Hz
350
500
700
1000
6000
7000
10000
upper limit
[%THD]
50
25
10
5
5
10
10
©2011 Knowles Electronics
2403 260 00041
3.2. Electro-Acoustic Parameters
LOUDSPEAKER MOUNTED IN ADAPTER ACC. TO SHEET 190-6.1
1. RATED IMPEDANCE
Z:
32 Ω
2. VOICE COIL RESISTANCE
R:
28.8 Ω ± 10 %
3. RESONANCE FREQUENCY (measured @1mW)
f0:
520 Hz ± 15 %
4. MAXIMUM useable EXCURSION
Xmax:
0.40 mm p-p
5. NOMINAL CHARACT. SENSITIVITY (calculated for 1W in 1m )
average from 2kHz to 4kHz
65 ± 2 dB
5.1. MEASURED CHARACT. SENSITIVITY (at 10mW in 1cm )
average from 2kHz to 4kHz
85 ± 2 dB
6. FREQUENCY RANGE IN TELECOM APPLICATION
300 - 3,4 kHz
7. THD
according to Sheet 190 - 4
< 60 dBSPL (300 Hz .. 1500Hz) in 1cm at 5mW (400mVeff)
8. RUB & BUZZ
3.3. Power handling
RECEIVER MOUNTED IN LIFETIME TEST DEVICE ( OPEN REAR / OPEN FRONT)
(pink noise shaped according to diagram below, Crestfaktor 2)
2.
MAX.SHORT TERM POWER
(0,5sec. ON / 3sec. OFF)
MAX. CONTINUOUS POWER (500h)
75 mW (RMS)
40 mW (RMS)
Spectrum of life time test signal
10
0
-10
dBrel
1.
-20
-30
-40
-50
100
1000
10000
Frequenz [Hz]
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©2011 Knowles Electronics
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3.4. Measurement setup
IEC BAFFLE
Rq,including wiring <0,3Ω
freefield microphone
1/4“
power amplifier
analyzer
≈
d
3.5. Measured Parameters
3.5.1.
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.
3.5.2.
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 3.1. This test
is performed for 100% of products in the production line.
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©2011 Knowles Electronics
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3.6. Measurement adapter
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©2011 Knowles Electronics
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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
ETS 300 019-2-7
Release – Revision: E
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.
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©2011 Knowles Electronics
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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 5 years.
5.5. Testing Procedures
5.5.1.
Storage Tests
5.5.1.1.
Low Temperature Storage Test
Parameter
Low Temperature
Storage
(Ref. EN 60068-2-1)
Test Method and
Conditions
Duration
Evaluation Standard
-40°C
168h
Measurements after 2 hours
recovery time.
rel. humidity not
controlled
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
+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 %.
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©2011 Knowles Electronics
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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.
90% to 95% RH.
24h at each
temperature
Measurements after 2 hours
recovery time.
(Ref. IEC 60068-2-30)
Temp. change time <3h
See Figure 5-2 below
All samples fully operable.
All acoustical parameters
according specification with
tolerances increased by 50 %.
Caution: no condensed
water on products!
+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
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©2011 Knowles Electronics
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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.
signal acc. Chapter 3.3
5.5.2.2.
THD may be increased after
test. All other acoustical
parameters according
specification with tolerances
increased by 50 %.
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.
signal acc. Chapter 3.3
5.5.3.
The allowable change in
sensitivity shall not be greater
than 3 dB. All other acoustical
parameters according
specification with tolerances
increased by 50 %.
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: E
Component may have reduced
performance, but must still
function properly. The allowable
sensitivity difference shall not
be greater than ±3dB from
initial sensitivity.
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5.5.4.
Shock Resistance Test (Free Fall Test) - unprotected product
Parameter
Test Method and
Conditions
Conditions /
Sample size
Evaluation Standard
Mechanical shock
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.
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
(18 drops in
total)
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)
Speaker in drop test box
or representative
mechanics. Random
drops on steel base.
30 units
180 drops, 1m
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)
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
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©2011 Knowles Electronics
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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: E
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
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©2011 Knowles Electronics
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7.
Change History
Status
Version
Date
ECR
Comment / Changes
Initials of
owner
Obsolete
A
18.12.07
2333
First release
BU
Obsolete
B
17.07.08
1957
Halogen free basket
CP
Obsolete
C
07.04.09
2435
Update legal disclaimer and printing methods
CP
Obsolete
D
06.04.10
2802
Update legal disclaimer and logo
CP
Release
E
07.06.11
3189
Introduction 5 layer gasket/Migration NXP to Knowles
template
SA/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 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 in telecom application:
300 Hz – 3,4 kHz
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: E
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©2011 Knowles Electronics