tayamodern.blogg.se - Reflow vs wave soldering

#REFLOW VS WAVE SOLDERING HOW TO#
#REFLOW VS WAVE SOLDERING MANUAL#
#REFLOW VS WAVE SOLDERING FREE#

Careful control of the quantities of flux are needed. Flux is applied to the side of the board to be soldered, i.e.

#REFLOW VS WAVE SOLDERING FREE#

To ensure that the areas to be soldered are clean and free from oxidation, etc, flux is required. This is because it is much easier for solder bridges to occur in the direction of the solder flow. Pads that are spaced apart in the direction of the solder flow should have a greater spacing than those that are spaced at right angles to the solder flow. In view of the way that wave soldering works, where the solder wave is caused by the solder flowing out of the reservoir tank, and the board passes over it, the spacing requirements are dependent upon the direction of the board relative to the solder flow.

If they are too close then there is the possibility that the solder may bridge the two pads causing a short circuit.

Pad spacing: The second main precaution is to ensure that there is sufficient spacing between the solder pads requiring soldering.

This solder resist is most commonly green on colour. Only those areas where the solder is required are left exposed. A solder resist or solder mask layer is included in the PCB design, and this adds a layer of "varnish" like material to the board to which the solder will not adhere.

Solder resist layer: The first is standard practice when designing boards these days.

In order that a electronics printed circuit board may be successfully processing using a wave soldering machine, it is necessary that it is designed and manufactured in the correct manner. These are typically made of titanium because it is able to withstand the temperatures and it is not affected by the solder. The boards are held firmly in place on a conveyor using metal fingers. Care must be taken in adjusting the height of the wave so that it does not flow over the top side of the board where it would cause solder to enter places where it is not required. Within the tank, a wave of solder is set up and the printed circuit boards are passed over this so that the underside of the board just contacts the solder wave. This is maintained at the required temperature for the soldering process. The wave soldering machine consists of a heated tank of solder. As a result wave soldering is less widely used for PCB assembly than it was many years ago. However other methods such as infra-red reflow soldering are more applicable to the fine features being used today on printed circuit boards for surface mount components. Wave soldering can be used in PCB assembly for both conventional through hole mounted components as well as surface mount components.

#REFLOW VS WAVE SOLDERING MANUAL#

Apart from being much faster than manual soldering, wave soldering is also produces joints with a much higher degree of reliability and this makes it ideal for large scale PCB assembly. In this way a complete board can be soldered in a matter of seconds producing joints that are reliable mechanically and electrically.

The wave soldering process gains its name from the fact that the process passes the printed circuit boards to be soldered over a wave of solder. Despite this, wave soldering remains as a process which can be used effectively in a number of areas, especially when the PCB assembly uses a mix of leaded and SMT components. Wave soldering is far less widely used in PCB assembly than it was in previous years. Wave soldering is a technique used for large scale PCB assembly for fast soldering of boards that use either or both SMDs and leaded components.

#REFLOW VS WAVE SOLDERING HOW TO#

See also: Soldering basics Manual soldering: how to solder Soldering irons Tools for soldering Solder - what it is and how to use it De-soldering - the secrets of how to do it properly Solder joints SMT soldering techniques Wave soldering Reflow soldering Soldering BGAs What is solder paste & how to use it Wave Soldering - for PCB assembly One of the techniques that has been used in PCB assembly is wave soldering as it provides swift soldering for boards using either or both SMT and leaded devices.