10 CP620, CP630, CP635, CP651, CP661, CP665, CP676
Durability Information
Parameter Value of CP600 Value of CP635-Fx
Backlight service life
(LED type)
MTBF value: 40,000 h
(time of continuous operation until the brightness of the backlight reaches
50 % of the rated value when the surrounding temperature reach 25 °C),
see
1
Battery lifetime 10 years if the surrounding temperature is 25 °C
5 years if the surrounding temperature is 40 °C
Front foil (without directly
expose to sunlight or UV ray)
10 years if the surrounding temperature is 25 °C
UV Resistance Indoor applications: After 300 h cycled humidity in QUV accelerated
weathering, some yellowing and brittleness may be present.
Touch panel
(resistive film, analog)
1,000,000 or more of activations,
see
2
Not applicable
(capacitive touchscreen with no
mechanical stress), see
3
Touchscreen reliability > 1 million operations Not applicable
(capacitive touchscreen with no
mechanical stress)
1
Extended use in environments where the surrounding air temperature is 40 °C or higher may degrade
backlight quality/reliability/durability.
2
Solvent resistance:
Contact for ½ hour at 21 °C, no visible effect: Acetone, Butyl Cellosolve, Cyclohexanone, Ethyl Acetate,
Hexane, Isopropyl Alcohol, MEK, Methylene Chloride, Toluene, Xylene
Contact for 24 hours at 49 °C, no visible effect: Coffee, Ketchup, Lemon Juice, Mustard (slight yellow stain),
Tea, Tomato Juice.
3
Solvent resistance:
Contact of more than 24 hours, no visible effect: Acetone, Acetic acid <50%, Ammonia <32%, Hydrochloric
acid <10%, Hydrogen peroxide <25%, Potassium Hydroxide (Caustic Potash) <2%, Sodium hydroxide 50%,
Sodium hypochlorite <20%, Sulphuric Acid 30%, Toluene
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