Soldering_0.pdf - 1 Soldering Contents Introduction 2 1 Soldering Printed Circuit Boards 3 2 Types of Solder 4 3 Types of PCB 5 3.1 Through-Hole

Soldering_0.pdf - 1 Soldering Contents Introduction 2 1...

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1RN Contents Index 2016 Soldering Contents Introduction ........................................................................................................21 Soldering Printed Circuit Boards .....................................................................32 Types of Solder ................................................................................................43 Types of PCB ..................................................................................................53.1Through-Hole Components .............................................................53.2Surface Mount Components ............................................................54 Flux ..................................................................................................................65 Soldering Irons ................................................................................................75.1Tips ..................................................................................................85.2Tip Contamination and Cleaning .....................................................96 Ovens and Hot Plates .....................................................................................107 Desoldering ....................................................................................................118 Hazards involved in soldering .......................................................................128.1Heat ................................................................................................128.2Toxic materials ..............................................................................128.3Spattering .......................................................................................138.4Electrical Safety .............................................................................13
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2Index Introduction RN Soldering 2016 IntroductionSoldering is a process used for joining metal parts to form a mechanical or electrical bond. It typically uses a low melting point metal alloy (solder) which is melted and applied to the metal parts to be joined and this bonds to the metal parts and forms a connection when the solder solidifies. It is different to welding in that the parts being joined are not melted and are usually not the same material as the solder. Soldering copper pipe Sheet metal fabrication Figure 1 Different Types of Soldering Soldering is a common practice for assembling electrical components and wiring. Although it can be used for plumbing, sheet metal fabrication or automotive radiator repair the techniques and materials used are different to those used for electrical work. This document is intended to provide guidance on the safe working methods and proper tools and techniques for soldering of electrical components.
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3RN Soldering Printed Circuit Boards Index 2016 Soldering 1 Soldering Printed Circuit Boards Soldering may be used to join wires or attached components to a printed circuit board (PCB). Wires, component leads and tracks on circuit boards are mostly made of copper. The copper is usually covered with a thin layer of tin to prevent oxidization and to promote better bonding to other parts with solder. When soldering bare copper wires they are often “tinned” by applying molten solder before making a joint. Hand soldering components on PCB Industrial oven for surface mount Figure 2 Different Types of PCB Soldering
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4Index Types of Solder RN Soldering 2016 2 Types of Solder There are different types of solder used for electrical work. They are broadly classified as tin/lead solders or lead free solders. Tin/lead solders have been used for many years because of their ease of use however they have been phased out of commercial use due to the harmful effects on humans and the environment. Tin/lead solder is still available and is used by “hobbyists” and other non-commercial users as it is still easier to use than lead free types. When using tin/lead (or leaded) solder there are additional safety precautions that must be observed. Different gauges of solder wire Solder composition is labelled (Lead free on left) Figure 3 Different Types of Solder
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5RN Types of PCB Index 2016 Soldering 3 Types of PCB Printed circuit boards (PCBs) are populated by electronic components and these may be “surface mount” or “through-hole” types.3.1 Through-Hole Components As the description “through-hole” suggests, the leads of the component are passed
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