Panasonic CT-24SX12UF service manual About lead free solder PbF

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About lead free solder (PbF)

Note: Lead is listed as (Pb) in the periodic table of elements.

In the information below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder. The Lead Free Solder used in our manufacturing process and discussed below is (Sn+Ag+Cu). That is Tin (Sn), Silver (Ag) and (Cu) although other types are available.

This model uses Pb Free solder in it’s manufacture due to environmental 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 manufactured using lead free solder will have the PbF within a leaf Symbol stamped 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 temperature 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 completely remove all of the Pb free solder on the pins or solder area before applying Pb solder. 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 component side for excess solder which may flow onto the opposite side. (see figure below)

remove all of the excess solder

Suggested Pb free solder

component component pin

slice view

solder

There are several kinds of Pb free solder available for purchase. This product uses Sn+Ag+Cu (tin, silver, copper) solder. However, Sn+Cu (tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) solder can also be used.

0.3mm X 100g

0.6mm X 100g

1.0mm X 100g

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Contents Ie f i l p im S Important Safety Notice About lead free solder PbF Schematics, Voltages and waveforms Service Notes Board Table Description A68QCP893XU Receiver Feature TableLocation of Controls Remote ECQM4473JZW REF no DescriptionTaping GAP Terminal ECWH16103JVBECWH20102JVY ECQM6332JZWECQM6472JZW ECKW3D102KBRECA2AM100B CT-27SX12F/UF , CT-27SX32F/UF PTC 5-OHM MA4062LTVTA DIODE, ZenerMA4270MTA Diode TVSRU2NV1 DIODE, SiliconeCOIL, 2UH Optho CouplerZener REG CoilRelay TransistorCT-27SX12F/UF,CT-27SX32F/UF ERX12SJR47P ERQ1CJPR82SERQ1CKPR56S ERDS1FJ1R0TERDS2TJ103T ERF7ZK1R5ERG2FJ331H ERC12ZGM825DControl 10K CT-27SX32F/UF ERJ6ENF4701V ENV56D61G3S Tuner KFT4AA390F TRANSFORMER, FlybackETS39AG375NC Transformer ENGF6101G TunerBoard CT-24SX12F/UF Board CT-24SX12F/UF Board CT-24SX12F/UF Board CT-24SX12F/UF Board CT-27SX12F/UF Board CT-27SX12F/UF Board CT-27SX12F/UF Board CT-27SX12F/UF Board CT-27SX32F/UF Board CT-27SX32F/UF Board CT-27SX32F/UF Board CT-27SX32F/UF Board Board Board TNP2AA078ADM Board Board Board Board TNPA1090AMM Board