2403-263-00092 Datasheet, PDF (18/25 Pages) Knowles Electronics – 8x15x1.5 HAC Receiver

Knowles Electronics
4. Environmental Tests
4.1. Qualification Tests
Specification: 8x15x1.5 HAC Receiver
Order No. 2403 263 00092
Revision: A1.5.1 / 04.29.11
According to our milestone plan (Product Creation Process), a complete qualification test will
be done at design validation on products, manufactured under serial conditions and 1x per
year and product family. The qualification process covers all tests described under 4.5 and a
complete inspection takes place.
4.2. Requalification Tests
1x per month and product family samples are taken and submitted to tests described under
4.5.2
4.3. 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 4.1 and 4.2.
4.4. Period of Shelf-Life
The period of shelf-life is 5 years.
4.5. Testing Procedures
4.5.1. Storage Tests
Low Temperature Storage Test
Parameter
Low Temperature
Storage
(Ref.
BSI BS EN-60068-2-
1)
Test Method and
Conditions
-40°C
rel. humidity not
controlled
Knowles. 2011 All rights reserved.
Duration
168h
Evaluation Standard
Measurements of acoustic
parameters shall be still within
specification.
Allowed deviations: Sensitivity
is allowed to be within +/-3dB
from initial value;
The distortion shall not
increase by more than a factor
of 1.4 of the initial value
measured at a single
frequency bin.
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