Smt Dual

Smt Dual

2pc 7443 T20 Dual Contact 68x 3528 SMD LED Red Tail Light Rear Lamp Bulb DC 12V $22.00

Dual Row 4 Position 2.54mm Pitch SMT DIP Switch 5 Pcs $4.59

Edsyn Loner Dual Soldering Iron Workstation 952 PCB SMT $295.00

FUJI QP Feeders 8 x 4 Dual Lane SMT PCB Pick and Place $450.00

Dual Row 4 Position 2.54mm Pitch SMT DIP Switch 5 Pcs $3.83

DELL SMT Gaming PC Dual-Core 3.4Ghz 4Gb 500Gb-HD DVD±RW ATI-Radeon Vista Desktop $370.49

2x 7443 T20 Dual Contact Xenon White 68 SMD LED Tail Light Rear Lamp Bulb DC 12V $20.50

3K NXP BZB784-C6V2 6.2V dual zener SOT-323 SMT 7″ reel $60.00

2pc 7443 T20 Dual Contact 68x 3528 SMD LED Red Tail Light Rear Lamp Bulb DC 12V $22.00

Dual Row 6 Pin 2.54mm Pitch SMT Type DIP Switch 5 Pcs $4.12

2pc 7443 T20 Dual Filament 68x 3528 SMD LED White Parking/Park Light Bulb DC 12V $17.20

1PCS AD8620 8620 SMT Dual Op Amp IC’S IC CHIP NEW,(A7) $9.98

10PCS AD8620 8620 SMT Dual Op Amp IC’S IC CHIP NEW,(A7) $48.88

1157 2357 Bi-Color LED Switchback Turn Signal Lights $382.49

100P AD8620 8620 SMT Dual Op Amp IC’S IC CHIP NEW (A7) $463.88

100, AD8610 SMT Dual Op Amp IC’S IC CHIP NEW $466.00

100pcs, AD8620 SMT Dual Op Amp IC’S IC CHIP NEW $158.00

10, AD8610 SMT Dual Op Amp IC’S IC CHIP NEW $51.90

8 pcs BAT54S 200mA 30V, Dual SCHOTTKY DIODE Series Connection. SMT, SMD, SOT-23 $1.04

5 Pcs Dual Row 10 Pin 2.54mm Pitch SMT Type DIP Switch $3.97

DELL SMT Gaming PC Dual-Core 3.4Ghz 4Gb 1Tb-HDD DVD±RW ATI-Radeon Vista Desktop $379.99

CONNECTOR Dual Row 30×2 High Density SMT Mount $7.99

CONNECTOR Dual 30×2 High Density SMT Mount Header $7.99

Amber White Dual Color Switchback 1157 7528 60 SMD LED Turn Signal Lights $39.98

Dual Color 1157 60-SMD LED Turn Signal Light Toyota $39.98

Amber White Dual Color Switchback 1157 7528 60 SMD LED Turn Signal Light Nissan $39.98

Switch Back 1157 LED Turn Signal Light Dual Color $39.98

Amber White Dual Color Switchback 1157 7528 LED Turn Signal Lights Hyundai Kia $39.98

Amber White Dual Color Switchback 1157 7528 60 SMD LED Turn Signal Light Honda $39.98

Amber White Dual Color Switchback 1157 60 SMD LED Turn Signal Light Acura Honda $39.98

AD8512 Precision Low Noise Dual JFET Op-Amp Chips SMT 2pcs $8.95

APPRX 100PC LOT SMT LM1458M DUAL HIGH PERFORMANCE OP AMP $9.95

5 Pcs 4 Pin Dual Row 2.54mm Pitch SMT Type DIP Switch $4.23

SMT Stencil Printer with Dual Camera`s + Vertical Lift !NEW $8,000.00

15 Dialight 591-3001-002F Dual Color Red/Green SMT R/A LEDs $19.99

4 Watt Dual Color Switchback 3157 3457 LED Turn Signal Lights & Resistors #F4 $49.99

5 Pcs 8 Pin Dual Row 1.27mm Half Pitch SMT DIP Switch $5.61

DELL SMT Gaming PC Dual-Core 3.4Ghz 4Gb 320Gb-HD DVD±RW ATI-Radeon Vista Desktop $379.99

5 Pcs Dual Row 16 Pin 1.27mm Half Pitch SMT DIP Switch $5.52

New 2*AD797 SMT Dual Op Amp IC’S IC CHIP i5045 $12.66

50 ~ TI # SN74ABT623DW SMT IC BUS TRANSCEIVER DUAL 20 SOIC 74ABT623 $9.99

5 Pcs 8 Pin Dual Row 1.27mm Half Pitch SMT DIP Switch $5.03

Dual Row 6 Pin 2.54mm Pitch SMT Type DIP Switch 5 Pcs $3.80

2x 7443 T20 Dual Contact Xenon White 68 SMD LED Tail Light Rear Lamp Bulb DC 12V $20.50

Dell Optiplex 745 Motherboard SMT HR330 Dual Core Capablility 64-bit $33.95

5 Pcs Dual Row 10 Pin 2.54mm Pitch SMT Type DIP Switch $3.88

10PCS AD8620 8620 SMT Dual Op Amp IC’S IC CHIP NEW,(A7) $48.88

25P AD8620 AD 8620 SMT Dual Op Amp IC’S IC CHIP NEW A7 $117.88

2PCS AD8620 8620 SMT Dual Op Amp IC’S IC CHIP NEW, (A7) $12.43

50PCS AD8620 8620 SMT Dual Op Amp IC’S IC CHIP NEW (A7) $238.97

How to make PCBs (Printed Circuit Board) at home using a laser printer and the toner transfer method

As an enthusiastic fan of electronics hobby that has always been fascinated by the fact that it is actually possible to make a near professional-looking printed circuit board (PCB) at home.
My desire to produce my PCBs at home instead of using the old wire-wrap prototyping approach is even stronger as the year goes by and the availability of packages through holes (For modern devices) is diminishing.
When thinking about a new design, a device has much more to choose whether the SMT is acceptable. That is a strong motivation to learn how to make your own PCB SMT at home.

The method I'm going to introduce here has a success rate and excellent results. It is important to follow the rules.
It's really a production process that once completed you feel proud to perform that.
Again, following the standards is fundamental to the success of the process. This may seem daunting at first, but in reality, the process is very easy to follow.

Major stages of production:

1. Prepare a mirror image of your circuit, printed on transfer paper using a laser printer toner.
2. Cut, clean sand and a piece of copper laminated epoxy fiberglass.
3. Bake at his masterpiece in the oven.
4. Record your motherboard inside a chemical attack.
5. Rinse with water and sand some leftovers.
6. Show all your board.
7. Welding of the components.

Notes:

Do not forget to take safety measures these steps.
It is highly recommended to use latex gloves when handling the chemical attack.
During the production process there are many opportunities to cut, ruin your clothes, burn their fingers and inhaling substances hostile. Be careful.

Well, let's get started!

Like all products in the modern age, the PCB starting in design software on your PC. Choosing your favorite design software for this task is beyond the scope of this document. The only requirement I insist to be able to print an image of the design in a mirror. The importance of reflecting the design is difficult to explain with words and should be understood from Photo followed the link below.
The great advantage of SMT PCB basis for the production of housing is that the devices do not require drilling SMT threw the board. That's just great. However, sometimes you can not get away with it. There are few cases that force you to drill holes. For example, some of them require drilled connectors holes. Traces that could not be routed and require soldering copper bridge between two points is also required drilling. Either way, SMT technology dramatically reduces the number of holes drilled while reducing the board size at the same time.

The reason I SMT discussed the advantages was to be keep in mind when designing the circuit, you want the minimum amount of exercise and you should try to avoid complex designs in the first place. I always try to brake large circuits in some separate boards. There are two main reasons for this segmentation board. First, the smaller the circuit easier design. Circuits, smaller blocks can serve as general-purpose base to build great designs in the future. Think of an amplifier general purpose operating board. A board can have only one device AMP with resistance from a few around and solder points for connection of external cables. It is an ideal component for many projects.
Once your design layout is ready for production, should be able to print a mirror image of the same using a scale of 1:1 in a special glossy paper (paper toner transfer would be better), using a laser printer.

Lets stop the preceding sentence into smaller pieces now.

A final design should be seen as a graphical representation of the footprints must reside in the finished board. The image must be reflected in the way that we will use later in the process.
Now, glossy paper is a general term for a more confusing as "Some types of paper used by inkjet printers for photo printing." In case you did not know, not all photo papers are born equal. Finding the right paper for this work can be tedious. The first document that uses could not detach from the PCB at the end of the process, and I had to throw it trash. The following article I found was a success. It peels easily and leaves an impression of cleanliness of the copper traces in the nude. I will talk about this subject peeled later in the process. Remember that you can try some photo papers before finding the "one". Do not give away. Fortunately, there are special roles toner transfer designed exactly for this purpose.

Using a scale of 1:1 means that you must configure your software to print the image your board with dimensions equal to the actual dimensions of components and traces.
And finally, only the laser could do the trick. This is due to the toner, which is the black substance (laser "ink") that is used for laser printing is actually a polymer that does not penetrate the paper as real ink. The toner is heated inside the printer and when it melts it sticks to the surface of glossy paper. Stuck on the surface of paper, toner, just wait the opportunity to stick (transfer) to another surface when heated enough to melt. Are you starting to get it?

Now that we have a version PCB printed in our hand, I cut the paper outlines our advice and leave a few millimeters of paper at the edges of the board. The remaining outside the lines of the table will be used later as a grasping point for peeling the paper.

This is the part where you put your hands to do some office work.

A PCB starts as a laminate of a thin layer of copper on a substrate of epoxy glass (also called FR4). The laminates can be found usually in you want to buy your electronics. There are two types of laminates for the home user. Single and double-sided. usually from 1 mm to 2 mm thick. It just means that there one side of copper on one side of the sheet. Dual means that there is copper on both sides of the sheet. This paper focuses on a single side PCB laminate face just enough. Sola face circuits can be single or double sided laminates because in any manner any unwanted copper is etched.

Cut the laminate to the circuit size is done in two phases. First, marking the height of his circuit through the blade with a sharp knife and a ruler. The deeper the. Brand will be easier After marking the line, align the straight line with an edge of a table and place a ruler over the plate. Applying pressure on the laminate to brake through the mark, leaving a nice straight edge. Now, the width of the circuit should be marked and cut in the same way.

Now we have the laminate cut size, we must prepare for the transfer of toner. Using sandpaper (wet paper), copper should be sanded evenly until the copper is clean and bright leaving microscopic scratches on the copper surface. These microscopic scratches are best as the points of attachment for bonding toner to the copper.

After sanding the copper is important to wash the blade with soap and water. Using soap dishes would be best. This washing is intended to remove any remaining food fat (greasy fingerprints are too). Remains of fat would prevent proper toner stick to copper. Avoid touching the copper after washing, since it must kept free of grease (fingerprints are greasy). Finally, the laminate must be dried with a paper towel.

Do you remember the mirror image printed on glossy? place above the copper, such dry copper goes up and faces the toner to the copper. The paper should be directly above the copper. Keep rolling the paper and continuous use of tape on both edges of the foil to the paper and laminated together. Make sure the circuit is aligned the way you want and

take a deep breath, because the most interesting step is the following.

The circuit is ready for the cooking stage. Few people board recommended the paper with a hot iron until it sticks to copper. The problem I found with ironing board is not predictable in terms of successful transfer toner. Sometimes it works and sometimes not. I think I've developed a better technique. Before cooking you can start to prepare some type of pressure device to maintain the glossy press on copper. I can use two thick aluminum plates with holes in the corners. Screws used to fasten the plates together, while the circuit is in the center. The circuit must be cushioned from thick layers of paper. Damping is important to increase the pressure through the laminate and prevent some parts of the circuit not being transferred correctly. Bolts and nuts should be closed to apply a strong pressure on the laminate floor and combine the role satin.

The press should be inserted into a preheated 150 degrees oven for a period of about a half hour. The cooking time can vary depending on the mass media device you use. The heavier the press more time to reach hot enough to transfer heat to the buffer paper and the inner circuit. After cooking is finished, we recommend turning off the oven, open the door and let it cool until you can play the press device hands. This is the time to release the pins and find the circuit between the layers of paper.

If all went well you should see that the glossy paper is stuck to the copper. Now find a paper edge and start pulling gently away from the copper. If you had any luck, the paper comes off easily leaving an impression nice about the copper. If the paper is not a friendly you may have real difficulties with peel away without ruining the footprints in the copper. Sometimes, if the pressure is not uniformly applied in all areas that would be some toner does not adhere to copper and the laminate is useless for the following stages (can be sanded and began from the beginning). If anything went wrong must now hold in your hand a sheet with the printed circuit in which like like a piece of paper that came out of a printer laser.

Just before shooting starts, you go to drill holes a few packages now through hole and jumper cables, if necessary. It is preferable to drill before recording begins around because copper provides mechanical strength to best round pads around the holes drilled. These pills can be started sometimes when drilling after the board is recorded. Another good reason is that recorded after drilling would avoid copper wire around the edges of the hole.

Now is the time to eliminate unnecessary copper, where there is no trace (no toner). Toner is actually a protective coating that prevents the etching fluid recorded our tracks. The etching substance called ferric chloride, and gravel can be purchased as little or as dust.

The liquid recording is a mixture of hot water (as the temperature used to wash their hands on a cold day) and ferric chloride. The ratio of the amount is not crucial. Very little of ferric chloride etching delay the process. Too much clay will result in a dark and dirty liquid. I can use ratios to make a cup of coffee. Put only a small amount of ferric chloride, at the bottom of your container and fill it with water. The container should be engraved glass or plastic – not metal.

For the etching process is necessary to find a way to keep it down and pulling the circuit input and output of fluid. Thus any remaining copper has been recorded is washed from the surface and allow the liquid to penetrate the deeper layers of copper. I'm using something like a small fishing rod with a line connected to a small hole drilled somewhere on the sheet. Once started recording, you can take a few minutes of recorded up to see some results. At first, large areas of exposed copper begin to disappear. A few minutes describes the differences between the tracks. Finally after half an hour or more, the board will finished.

By the time the council has the look you want, should be washed under running water to remove any food from the etching liquid and stop the etching process. Be careful when washing the circuit (and container). Liquid splashes dark spot anything in its path.
After the circuit has washed and ready for the final. Using the finest sand paper again (wet paper), the black toner must be removed to expose the copper. An alternative to remove the black toner is washed with a few drops of acetone. Once all the copper plate is exposed ready for welding.

That is all. Now is holding his first hand made PCB. This is the time to go and show everyone what they've accomplished.
Now all you have to do is solder the components on and off the circuit …

It is highly recommended to view the photos on the link below.

How to make PCBs (Printed Circuit Board) at home using a laser printer or toner transfer methods.

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Watch the photos accompanied with this article :

How To Make PCB (Printed Circuit Board) at home using a laser printer or the Toner Transfer Method.

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