Posts Tagged ‘PCB Fabrication’

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New High-Density, Direct Connection for PCB’s

Written by Admin on . Posted in PCB Design, PCB Manufacturing

A new high-density direct connection for printed circuit boards has been placed on the market by Phoenix Contact.  Dubbed the SDDC 1.5 connection system it offers four to thirty-two conductors using “SKEDD” plug-ins.  Using the SDDC 1.5 eliminates the need for a header and soldering during the manufacturing process, saving money.   Using a push-in spring connection allows wires to be terminated to the connector.  It has also been designed with solid, stranded wires that include a ferrule which can be pushed into the terminal block while the spring clamp stays closed.  Removing the wires is simple by pressing the orange spring lever with a regular screwdriver.  It has a range of 3.5-mm centerline and works with 24 to 16 AWG wires, can handle currents up to 8 A at 300 V UL, and provides the push-in spring connection.  Its double row design is the latest in SKEDD Technology that uses a gas-tight connection.

The SDDC 1.5 connection system’s contact zone consists of two flexible parts that allow contacts to be easily adjusted with the use of plated through-holes on the printed circuit board.  The good news for manufacturer’s is that the design is so easy, it will not add to the cost of manufacturing, in fact, it can save on the production costs.  When inserted there is enough force that will create a gas-tight connection, requiring nothing special for the PCB.  The connection stability of the board is achieved by locking pins that expand with the push of the orange locking tabs.  It can potentially be used in building automation, HVAC systems, elevators and escalators, and white goods.

Also Read: View on PCB Design and Implementation today and in the future

Features include;

  • Allows you to save time during wire termination with its push-in connection
  • There is no need for a plug and header combination with its direct plug-in onto the PCB
  • Cost effective, only one component is necessary
  • Free positioning
  • Secure locking
  • Up to 25 mating and unmating cycles, for easy replacement
  • Intuitive use through color coded actuation lever
  • Quick and convenient testing using integrated test option

The SDDC 1.5 connection system is the newest high-density direct connection for printed circuit boards, that reduces manufacturing costs while allowing free positioning on the printed circuit board.  This is good news for the early adopters of this connection system, the implementation process does not require additional parts, the opposite is true, it only requires one component, does not require soldering and can be manufactured without using any tools.  Adding the integrated test option is simply another reason for considering the use of this connection system when necessary.

Also Read: Why it is Necessary to Control Humidity in PCB Assemblies

There is no doubt that the printed circuit board is the most important aspect of any technological project.  Meeting the industries demand for smaller, more effective, devices will continue to be a part of the PCB manufacturer’s responsibility.  The SDDC 1.5 connection system is an example of the latest in technological advances that we continue benefit from.  We look forward to the next advancement in PCB manufacturing!

 

 

References

Thomasnet.com

Phoenix Contact

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Why it is Necessary to Control Humidity in PCB Assemblies

Written by Admin on . Posted in PCB, PCB Assembly and component, PCB Manufacturing

A Printed circuit board is quite literally an insulated board on which wire is laid to create a circuit. They are a critical and very necessary part of all electronic products. They are in everything from complex computers to basic smartphones. Since they are the base for the circuits that transfer electricity, if they were not included in an average electric machine that machine would just not work not to mention the fact that there would be no place to put the components. The market for PCBs is currently at $60 Billion, that’s Billion with a “B” and growing.
Just like any other electronics, require careful conditions during production to ensure that the integrity of the board is maintained before shipping. In general, things like dust, heat, and the focus of this article, humidity, will have an effect on the PCB.
Just like dust can interfere with and even interrupt circuits, and heat can cause some metal within the circuits to melt, humidity, meaning the amount of moisture in the air, can allow current to run through unwanted areas of the circuit board, causing extreme damage to the board and the circuits on it. Although that should be enough to prove that control over humidity, there are additional factors that could be hazardous to the board, and, by extension, the equipment that it is a part of. Imagine if an expensive new desktop computer fell apart, or in a more extreme example, a computer-guided car or airplane failed mid-transit.
Too much moisture in the board can cause numerous problems from delamination to solderability issues. It is a very simple fact that moisture is not good for any electronic component and this is especially true when it comes to PCBs. Reality is that PCBs are extremely absorbent so both the builder and the end user must use extreme caution when avoiding moisture.
If you are an end user in a high humidity state such as Florida it is highly recommended that you pre-bake the boards before you solder them. Yes, the fabricator will have packed them with desiccant packs to keep the moisture down. But even the short time that the boards are exposed to humidity before they are put into the assembly process can be enough for that board to absorb too much moisture.
The most recommended way of keeping your products safe is to keep a humidity level at around %50, or between %40-%60, which will let the PCBs stay dry while not drying out completely or causing static discharge, which can occur below this level of humidity: a normal amount of moisture in the air only will not affect them.
Remember moisture is our enemy. But baking the moisture out the boards prior to the assembly process is the simplest and most cost-effective way to keep your boards safe and dry.

PCB Fabrication Making a World of Possibilities a Realty

Written by Admin on . Posted in PCB, PCB Fabrication, PCB Manufacturing

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The fabrication or manufacturing of printed circuit boards are the backbone of every computer operated piece of machinery on the market today.  The importance of the PCB should not be overlooked, without it we would not be able to enjoy all of the gadgets that have become a part of our daily routine and important part of our lives.  Just as technology advances so does the fabrication/manufacturing of the printed circuit board.  Chances are that you have benefitted from a PCB in form or the other and may not even be aware it.

Printed Circuit Boards Then

When thinking about PCB’s you may tend to think of what they are today if you are a tech savvy individual.  However, you may be surprised to learn the history of printed circuit board;

  • 1920 they made their debut, they could be made of materials such as Bakelite, Masonite, and sometimes wood.  Holes were made and brass wires were riveted and there you have it!  They were most widely used in radios.
  • 1947 the first double sided PCB with plated through holes was created
  • 1950-60 Advancements in the types of materials that were used to make them although they could only be printed on one side.  In 1956 the U.S. Patent Office granted a patent to scientists.  There process
    • They would draw a wire pattern
    • Photograph it into a zinc plate (creating a plate for the printing process)
    • They would use the plate to print the wire in an acid resistant ink on the copper foil
    • That could be etched by an acid solution
    • 1957 The Institute of Printed Circuits was formed.
    • 1960 Multilayer PCB production began
    • 1960’s and 70’s designers that had good experience would be able to layout and tape boards at a rate of two hours per 14-pin IC on the board
    • 1970’s you began to see changes in the size of the boards which were getting smaller, hot air soldering methods were being used and the RS-274-D was introduced
    • 1980’s Surface mounts were beginning to be used (led to reducing the size further)
    • 1986 saw the release of RS-274X
    • 1995 began using micro-via technology in fabrication
    • 1997 the ODB+++ was released to the general public
    • 2010 the production of Every Layer Interconnect began.

Printed Circuit Boards Now

Today printed circuit boards have evolved and become a part of our modern day technology.  Whether you are wearing a fit-bit, watch, or using an iPhone, the list can go on and on, you are benefitting from there sophisticated, delicate design that keeps the gadgets we depend on running smoothly.  The most exciting part is that this industry shows no signs of slowing down and guarantees new ways that will continue to improve our quality of life and enjoyment of all those gadgets that we can longer live without!  Just imagine what’s to come in the future as we continue to explore the untapped potential of the worlds technology!