{"id":3375,"date":"2022-11-20T08:05:30","date_gmt":"2022-11-20T13:05:30","guid":{"rendered":"https:\/\/motherboardsexpert.com\/?p=3375"},"modified":"2022-11-23T11:49:28","modified_gmt":"2022-11-23T16:49:28","slug":"thermal-conductivity-of-solder","status":"publish","type":"post","link":"https:\/\/motherboardsexpert.com\/thermal-conductivity-of-solder\/","title":{"rendered":"Know The Significance Of Thermal Conductivity Of Solders"},"content":{"rendered":"\n

Considering solders are metal, they obviously conduct heat. But why is it important to know about the thermal conductivity of solder in depth? <\/p>\n\n\n\n

There are numerous types of solder, which is a mixture of different metals, on the market. Knowing the solder\u2019s thermal conductivity will help you find the perfect one to meet your needs. <\/p>\n\n\n\n

Read along to learn about your solders and get suitable materials for your appliances. This article will discuss different solders and the thermal conductivity of solders. <\/p>\n\n\n\n

Understanding Thermal Conductivity of Solder<\/h2>\n\n\n\n

Solder is an alloy composed of tin and lead. Depending on the ratio of the mixture, the properties of solder can vary, such as melting point, electrical conductivity, thermal conductivity, and more. According to these properties, the application of solder also differs. <\/p>\n\n\n\n

The most common use for solders is in joining two or more materials in electronics. Its conveniently low melting point allows you to melt and use it on surfaces.<\/p>\n\n\n\n

Along with that, the thermal conductivity of solder is a property that will enable it to act as a heat sink in appliances. <\/p>\n\n\n\n

Fourier\u2019s Law<\/h3>\n\n\n\n

In laymen\u2019s terms, the thermal conductivity of solder is a material\u2019s ability to transfer and conduct heat from a higher heat region to a lower heat region through itself. <\/p>\n\n\n\n

Fourier\u2019s Law provides a more technical explanation for this phenomenon, stating that the heat transfer rate and the surface area through which heat is transferred are proportional to its negative temperature<\/a> gradient. <\/p>\n\n\n\n

Different Solder Materials<\/h2>\n\n\n\n
\"Solder<\/figure>\n\n\n\n

As mentioned previously, solder is composed of different ratios of materials. The composition of a given solder determines its attributes. <\/p>\n\n\n\n

Similarly, you should know which solder suits your purpose. Understanding the composition of this alloy will help you decide which type of solder you need for your project. <\/p>\n\n\n\n

Apart from these common alloys, you will find solders with additives; these metals are involved in reducing or enhancing certain specifications of the solder. <\/p>\n\n\n\n

Mainly, solders are either lead-based or lead-free alloys. Over time, lead-free solders are recommended for health-related reasons, but obtaining the required thermal conductivity of solder in these alloys has become difficult, so various substitutes have been created.<\/p>\n\n\n\n

Thermal Conductivity<\/h3>\n\n\n\n

Table 1.1 states the metals and their ratios for the composition to make the solder.<\/p>\n\n\n\n

Materials in the table are arranged in ascending order based on the Thermal conductivity of the solder. The melting point of each solder material is also mentioned in the table. <\/p>\n\n\n\n

The range of melting temperatures between the different materials exists because fixed temperature depends on fixed composition, which can vary slightly. <\/p>\n\n\n\n

Table 1.1: Thermal Conductivity of Solders<\/p>\n\n\n\n

Solder<\/td>Ratio<\/td>Thermal Conductivity (W\/mk)<\/td>Melting Temperature(\u02daC)<\/td><\/tr>
SnAg<\/td>96.5\/3.5<\/td>78<\/td>221<\/td><\/tr>
SnCu<\/td>99.3\/0.7<\/td>65<\/td>227<\/td><\/tr>
SnCuNi<\/td>Sn100C<\/td>64<\/td>227<\/td><\/tr>
SnAgCu<\/td>95.6\/3.5\/0.9or96.6\/3.8\/0.7<\/td>~60<\/td>217 Eutectic~220-217<\/td><\/tr>
AuSn<\/td>80\/20<\/td>57<\/td>280<\/td><\/tr>
SnAgCuSb<\/td>96.2\/2.5\/0.8\/0.5<\/td>57<\/td>215-217<\/td><\/tr>
Snpb<\/td>63\/37<\/td>50<\/td>183<\/td><\/tr>
AuGe<\/td>88\/12<\/td>44<\/td>356<\/td><\/tr>
AuSi<\/td>97\/3<\/td>27<\/td>363<\/td><\/tr>
Pbln<\/td>50\/50<\/td>22<\/td>209 (liquid) \/180 (solid)<\/td><\/tr>
BiSn<\/td>–<\/td>19<\/td>138<\/td><\/tr>
Pbln<\/td>80\/20<\/td>17<\/td>280 (liquid) \/270 (solid)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Cited from: https:\/\/www.electronics-cooling.com\/2006\/08\/thermal-conductivity-of-solders\/<\/a> <\/p>\n\n\n\n

Applications of Solder<\/h2>\n\n\n\n

Now that you are aware of what thermal conductivity of solder is and how the mixture of metals can change it, read on to learn more about the applications for low and high thermal conductive solders.<\/p>\n\n\n\n

Step Soldering<\/h3>\n\n\n\n
\n