AgIC Print - Printing circuit boards with home printers by AgIC Inc. — Kickstarter

AgIC Print - Printing circuit boards with home printers by AgIC Inc. — Kickstarter:

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Critical microelectronic solutions for medical technology

Critical microelectronic solutions for medical technology:

'via Blog this'

Fabrication CAM Software - Genesis 2000

Genesis 2000 is by far the most popular and widely used front end CAM processing tool on the market today.

Supplying your design in formats that support by Genesis 2000 and life will be good.

Supported Formats Inputs

"Genesis 2000 translators automatically identify all data formats, interpret the Gerber wheel, and convert incoming data to ODB++. Adaptive heuristic methodology is applied to maintain compatibility with changes in the CAD industry.

Frontline PCB Solutions, DFM Tools:

Frontline Gensis 2000 is the CAM tool of choice used by ~80% of the PCB fabricators today.

As you can imagine when the fabricator finishes fine tuning your design with this CAM DFM tools your Gerbers may differ significantly from what was actually fabricated

Online PCB Specials

Advanced Circuits

PCB Fab Express

IPC-2581 File Viewers

IPC-2581 Fab File Viewer

PCB Edge Inside Corner Radius

The inside radius of an inside corner is based on standard router bits.


Standard router bit diameters are .062", .093" and .100".

 The most common router bit used is the .062", so your inside radius would typically be .031".

FINISHED PCB REQUIREMENTS

PCB_SPEC2.pdf (application/pdf Object)

Vscore Central Pocket Guide to V-Scoring

The details are explained in at:
Vscore Central Pocket Guide to V-Scoring

Fab Houses - Capabilities

Alphabetical Order:



Optiprint

Transline Technolgy Incorporated

VIASYSTEMS

ZITROK - Metric Tolerances

ODB++

"ODB++ is a printed circuit board manufacturing database originally developed by Valor. It was created to try to bring some order to the transfer of board data from the designers to the manufacturer. Because Valor also provides the dominant CAM tool to manfacturers the company was able to get the major industry players to adopt their proprietary standard. In recent years ODB++ has become more open after attempts by the IPC were made to replace it."

"The great majority of PCB design software (layout) can output a valid and correct ODB++ file. A free ODB++ viewer can be obtained from Valor (Frontline) that allows one to visualize the data."

Source : What is ODB++

Also See: ODB++ Solutions Alliance

Trapezoid Traces - Etch Factor 1:1

Pattern Etching Process

First the etch resist is applied to define the copper patterns on the laminate.

The etching solution starts dissolving the copper foil on the laminate which is covered by resist.

The resist creates protected areas which are not etched away.  The etching process turns what was a solid copper area in to the desired pattern (traces and pads).

It takes time for the etching solution to work its way down through the copper. The upper portion of the copper is exposed to the solution longer than the copper at the base of the trace.

The etching process is timed controlled. The copper area is dissolved from the top down by the etching solution.

When etching reaches the base of the trace as shown in After Etching Process image the board is removed from the solution and rinsed to prevent over etching.

During the etching process the upper portion of the trace has been exposed to the solution longer than the bottom edge of the trace, thus creating the trapezoid trace shape.  

During the etching process the solution undercuts the resist as shown in the After Etching  Process image.

Blue is the Etching Solution.
Orange is the Copper Foil.
Green is the Laminate.


Before Etching Process

 

After Etching Process

 

The Etch Factor = Y Divided by X.

The Etch Factor is typically 1:1 (X=Y) which reduces the total cross section area of the trace by the thickness of the copper squared.

Properly calculating the cross section of small traces can be important if you need to determine how much current the trace can handle without rising above a given temperature.

The Free Saturn PCB Toolkit Calculator has an option which includes the Etch Factor Compensation for precise Conductor Cross Section Calculations.

Saturn PCB Toolkit
 
Randy