Lead Free Solder Beginning In 2004 - Hitachi 46W500 Training

DP-3X THINGS YOUR SHOULD KNOW

(03) Lead Free Solder beginning in 2004.

2004 product will use lead free solder (unleaded) to help preserve the environment. Please read these
instructions before attempting any soldering work.
Caution: Always wear safety glasses to prevent fumes or molten solder from getting into the eyes.
Lead free solder can splatter at high temperatures (140
Lead free solder indicator
Printed circuit boards using lead free solder are engraved with an "F".
Properties of lead free solder
The melting point of lead free solder is 104 ~ 122
Servicing solder
Solder with an alloy composition of Sn-3.0Ag-0.5Cu or Sn-0.7Cu is recommended.
Although servicing with leaded solder is possible, there are a few precautions that have to be taken.
(Not taking these precautions may cause the solder to not harden properly, and lead to consequent
malfunctions.)
Precautions when using leaded solder
Remove all lead free solder from soldered joints when replacing components.
If leaded solder should be added to existing lead free joints, mix in the leaded solder thoroughly after
the lead free solder has been completely melted (do not apply the soldering iron without solder).
Servicing soldering iron
A soldering iron with a temperature setting capability (temperature control function) is recommended.
The melting point of lead free solder is higher than leaded solder. Use a soldering iron that maintains a
high stable temperature (large heat capacity), and that allows temperature adjustment according to the
part being serviced, to avoid poor servicing performance.
Recommended soldering iron:
Soldering iron with temperature control function (temperature range: 320-450
Recommended temperature range per part:
Mounting (chips) on mounted PCB
Mounting (chips) on empty PCB
Chassis, metallic shield, etc.
The PWB assembly which will used lead free solder
SIGNAL PWB, VIDEO PWB, JOINT PWB , AUDIO PWB, FILTER PWB, LED,RECEIVER PWB, TACT
SW PWB, SPEAKER terminal PWB.
degrees
Part
degrees
F) .
F. higher than leaded solder.
degrees
Soldering iron temperature
608 +/- 86 degrees F
716 +/- 86 degrees F
788 +/- 86 degrees F
F .
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