PRECAUTIONS FOR
USE
The operating conditions and environment affect stability and
reliability, so please observe the following points concerning the use of CdS
cells.
●Even within the maximum ratings, try to stay
in the low region for power dissipation, applied voltage, and ambient
temperature.
(Since this
allowable power dissipation applies to total illumination of the sensitive
surface, when only part of the sensitive surface is used, the allowable power
consumption should be reduced in proportion to the surface that is being used.
●Use at high temperature and nigh humidity
shortens the cell life, and should be avoided.
●Avoid usage that exposes the CdS cell to
strong ultraviolet light.
●For low-light detection (1 lux or less for
general CdS cells), characteristics are less stable.
●If the CdS cell is subject to strong vibration
or shock, reinforce the cell itself and its leads.
●Since the window is made of glass and plastic
coating, avoid touching it, pressing it, and causing friction with it with hard
objects and
hot objects. In particular, this can cause deterioration of the optical and
electrical characteristics of plastic-coated
CdS cells.
However, there in no problem with normal handling by hand.
●Since extreme bending or twisting of the lead
at the root places stress on the lead root, avoid this. When forming the lead
near
the root,
provide support for the lead root before bending the lead.
●Do not solder the leads with stress applied.
Do not pull, twist, or compress the leads right after they have been soldered.
Allow them to
cool before changing the position or direction of the leads.
●When soldering, be careful about the soldering
temperature and duration. In general, CdS cells should be soldered at least
down the lead
from the cell package itself, with a solder iron no hotter than
temperature of the tip of the soldering iron and use a soldering iron
temperature controller if necessary.)
If these
conditions cannot be observed, prevent the temperature rise from reaching the
CdS cell (by using heat sink) or increase
the distance
of the soldering from the CdS cell itself.
●Avoid any chemicals that can corrode metal or
cause deterioration of plastic. If there is a possibility of metal corrosion or
deterioration
of plastic, experiment ahead of time and carry out the operation in question
only after confirming that it will not
harm the CdS
cell.
●When washing or cleaning with solvents, use a
Freon solvent (Freon TF, Difron solvent S3-E, or the like) or alcohol solvent
(isopropyl
alcohol, ethyl alcohol, or a similar agent). Ultrasound wave cleaning with
these solvents depends greatly on the usage
conditions,
but the cleaning time should be no longer than 30 minutes. Avoid
chloro-hydrocarbon and ketone solvents. They can
cloud and dissolve the plastic parts of the CdS cell.
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