Datasheet

SPECIFICATIONS
CUSTOMER MODEL NO. / TITLE
OPTICAL RECEIVING JACK
7. Precautions on Use
(1) Maximum rating
The maximum ratings are the limit values which must not be exceeded during operation of device.
None of these rating value must be exceeded. If the maximum rating value is exceeded, the
characteristics of devices may never be restored properly. In extreme cases, the device may be
permanently damaged.
(2) Soldering
Optical modules are comprised of internal semiconductor devices. However, in principle, optical
modules are optical components. During soldering, ensure that flux does not contact with the
emitting surface or the detecting surface. Also ensure that proper flux removal is conducted after
soldering.
Some optical modules come with a protective cap. The protective cap is used to avoid malfunction
when the optical module is not in use. Note that it is not dust or waterproof.
As mentioned before, optical modules are optical components. Thus, in principle, soldering where
there may be flux residue and flux removal after soldering is not recommended. CLIFF
recommend that soldering be performed without the optical module mounted on the board.
Then, after the board has been cleaned, the optical module should be soldered on to the board
manually.
If the optical module cannot be soldered manually, use non-halogen (chlorine-free) flux and make
sure, with cleaning, there is no residue such as chlorine. This is one of the ways to eliminate the
effects of flux.
In such a cases, be sure to check the devices‟ reliability.
(3) Noise resistance
It is believed that the use of optical transfer devices improve noise resistance. In theory, optical
fiber is not affected by noise at all. However, receiving modules which handle signals whose level
is extremely small, are susceptible to noise.
IF The optical module is to be used in an area which is susceptible to radiated noise, increase the
shielding by covering the optical module and the power line filter with a metallic cover.
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SPECIFICATION NO.
FC684206R
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PAGE： 5 OF 11
DATE： OCT.28.2003
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