Panasonic TH-50PF30U, Руководство по обслуживанию

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TH-50PF30U
2.2. About lead free solder (PbF)
Note: Lead is listed as (Pb) in the periodic table o f elements.
In the inform ation below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder.
The Lead Free S older used in our manufacturing process and discussed below is (Sn+Ag+Cu).
That is Tin (Sn), Silver (Ag) and Copper (Cu) although other types are available.
This model uses Pb Free solder in it's m anufacture due to environm ental conservation issues. For service and repair work, we'd
suggest the use of Pb free solder as well, although Pb solder may be used.
PCBs m anufactured using lead free solder will have the PbF within a leaf Symbol PbF stam ped on the back of PCB.
Caution
• Pb free solder has a higher melting point than standard solder. Typically the melting point is 50 ~ 70 °F (30~40 °C) higher. Please
use a high tem perature soldering iron and set it to 700 ± 20 °F (370 ± 10 °C).
• Pb free solder will tend to splash when heated too high (about 1100 °F or 600 °C).
If you must use Pb solder, please com pletely remove all of the Pb free solder on the pins or solder area before applying Pb sol­
der. If this is not practical, be sure to heat the Pb free solder until it melts, before applying Pb solder.
• After applying PbF solder to double layered boards, please check the com ponent side for excess solder which may flow onto the
opposite side. (see figure below)
component component
remove all of the ^1П\
excess solder
slice
\
solder
S uggested Pb free solder
There are several kinds of Pb free solder available for purchase. This product uses Sn+Ag+Cu (tin, silver, copper) solder. How­
ever, Sn+Cu (tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) solder can also be used.
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