Permalink
Find file Copy path
Fetching contributors…
Cannot retrieve contributors at this time
182 lines (149 sloc) 9.54 KB

How do I describe

Table of contents

Describe stackups

Aliases: "Stack up", "stackups", "buildup", "build up"

as a specification

We generally use "layers" as a way of describing stackups in CircuitData. You'll find that in addition to the usual parts of a stackup (dielectrics and conductive layers), there are several more functions that are defined as layers here. If you have a "free stackup", meaning that the manufacturer is free to choose the materials the have in stock as long as they comply with the demands specified, or you want to set a specific stackup that are not to deviate from. You can use the options set under the "configuration" and "stackup" object. In here, you will be able to set if the stackup is locked and thus cannot be changed. You can also specify if the order of the layers (both inner and outer) is ordered properly. Unordered layers will often be the consequence of exports from systems that don't have a total overview of all the layers, so please pay attention to this.

Conductive layers such as copper or silver

Aliases:

as a specification

You describe both rigid and flexible conductive layers under the layers section of a product. Each layer must be represented by one item, so a four layer board should have four items under layers with the function being "conductive". You also need to describe the material, e.g. copper. A conductive layer can have a lot of attributes, so make sure that you read the documentation.

Final finish

Aliases: "Surface finish", "finish", "surfacefinish", "finalfinish"

as a specification

You describe one or more final finishes under the layers section of a product. Each final finish must be represented by one item with the function being "final_finish". You also need to describe the material, e.g. ENIG. A layer of final finish can have a lot of attributes, so make sure that you read the documentation.

Dielectrics

Aliases: "laminates", "dielectricum"

as a specification

Dielectrics are defined as layers. It is very important that you also define a material and refer to that in the layers. Make sure that you read the documentation.

Soldermask

Aliases: "solder mask", "solder resist"

as a specification

Soldermasks are defined as layers. It is very important that you also define a material and refer to that in the layers. Make sure that you read the documentation. To just define a top or bottom soldermask, or e.g. two on top, make sure that you place the order number of the layer inn accordance with the conductive layers.

Legend

Aliases: "silk screen", "silkscreen"

as a specification

Legends are defined as layers. Make sure that you read the documentation. To just define a top or bottom legend, make sure that you place the order number of the layer inn accordance with the conductive layers. The color of the legend and the thickness is set on the layer and its attributes.

Stiffener

Aliases:

as a specification

Stiffeners are defined as layers. Make sure that you read the documentation. Make sure that you place the order number of the layer inn accordance with the conductive layers to get the correct placement.

Coverlay

Aliases:

as a specification

Coverlays are defined exactly like a Soldermask but with the "flexible" tag set to "true".

Peelable mask

Aliases:

as a specification

Peelable masks are defined as layers. Make sure that you read the documentation. Make sure that you place the order number of the layer inn accordance with the conductive layers to get the correct placement.

Peelable tape

Aliases: "kapton", "kapton tape"

as a specification

Peelable masks are defined as layers. Make sure that you read the documentation. Make sure that you place the order number of the layer inn accordance with the conductive layers to get the correct placement.

Conductive carbon print

Aliases:

as a specification

Conductive carbon print is defined as a conductive layer with a material set to "carbon".

Silver print

Aliases:

as a specification

Silver print is defined as a conductive layer with a material set to "silver".

Inner packaging

Aliases:

as a specification

All requirements for the inner packaging of the finished products can be defined in the "logistical" object under the "inner_packaging" object.

Board thickness and size

Aliases: "PCB"

as a specification

The size and thickness of the board/PCB is set under the "metrics" object in the "board" object.

Customer panel

Aliases: "array", "panel", "circuit board"

as a specification

All attributes and processes of/on the array/custom panel is set under the "metrics" object in the "array" object.

Depth routing

Aliases:

as a specification

Defined as a process with the function set to "depth_routing".

Counterboring

Aliases:

as a specification

Defined as a process with the function set to "counterboring".

Countersink

Aliases:

as a specification

Defined as a process with the function set to "countersink".

Punching

Aliases:

as a specification

Defined as a process with the function set to "punching".

Plated edges

Aliases:

as a specification

Defined as a process with the function set to "plated_edges".

Plated slots

Aliases:

as a specification

Defined as a process with the function set to "plated_slots".

Plated castellated holes

Aliases:

as a specification

Defined as a process with the function set to "hole" and "castellated" set to true.

Coin attachment

Aliases:

as a specification

Defined as a process with the function set to "coin_attachment".

Selective plated pads

Aliases:

as a specification

Defined as a layer with the function set to "hard_gold" and a placement attribute of "selective_pads"

Hard gold edge connectors

Aliases:

as a specification

Defined as a layer with the function set to "hard_gold" and a placement attribute of "edge_connectors"

Markings

Aliases: "lot-code", "lot number", "datecode", "serial number"

as a specification

Placed in the "configuration" part, this describes the markings needed. Generally you will find LOT/Batch codes here and also serial numbers. Markings are tied up to layers by the name of the layer.

Standards

Aliases:

as a specification

Placed in the "configuration" part, this describes the standards that the finished product needs to be comply with. Check out this for potential standards. Please note that if you want to have Halogen Free material, you can add "iec_61249-2-21" to the required standard

IPC 4761

Aliases: "via protection"

as a specification

Type I: "Tended single or double sided". Soldermask material is dryfilm. Hole "filled" must be with "soldermask". Type II: "Tended and covered single or double sided". Soldermask material is dryfilm. Hole "filled" must be with "soldermask". Hole "covered" is true Type III: "Plugged single or double sided". Hole "filled" must with be with "soldermask". Type IV: "Plugged and covered single or double sided". Hole "filled" must with be with "soldermask". Hole "covered" is true Type V: "Filled (fully plugged)". Hole "filled" must with be with "soldermask". Type VI: "Filled and covered single or double sided". Hole "filled" must with be with "resin". Hole "covered" is true Type VII: "Filled and capped". Hole "filled" must with be with "resin". Hole "covered" is true. Hole "capped" is true.