2403-263-00077 Datasheet, PDF (17/20 Pages) Knowles Electronics – SPEAKER-16-4.7-MFD

2403 263 00077
Temperature Cycle Test
Parameter
Change of Temperature
(Ref. EN 60068-2-14)
Test Method and
Conditions
-40°C/+85°C
Transition time <3 min.
See Figure 4-1 below
Duration
5 cycles
>2h for each
temperature
Evaluation Standard
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 2h 2h 2h 2h 2h 2h 2h 2h 2h
3m 3m 3m 3m 3m 3m 3m 3m 3m 3m
Figure 4-1: Temperature Cycle Test
Temperature / Humidity Cycle Test
Parameter
Damp heat, cyclic
(Ref. IEC 60068-2-30)
Test Method and
Conditions
+25°C/+55°C
90% to 95% RH.
Temp. change time <3h
See Figure 4-2 below
Caution: no condensed
water on products!
Duration
6 cycles.
24h at each
temperature
Evaluation Standard
Measurements after 2 hours
recovery time.
All samples fully operable.
All acoustical parameters
according specification with
tolerances increased by 50 %.
+55°C
+25°C
9h 9h 9h 9h 9h 9h 9h 9h 9h 9h 9h 9h
3h 3h 3h 3h 3h 3h 3h 3h 3h 3h 3h 3h
Figure 4-2: Temperature / Relative Humidity Cycle Test
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