Packages - LCC

LCC enables you to create geometry and boundary conditions to represent an leadless chip carrier package.

Name	The Name appears in the Project Manager window, history tree, and 3D Modeler window.
Plane	Plane specifies the plane on which to create the package.
Location	Under Location, specify the starting coordinates for the package geometry relative to center of the 3D Modeler.
Origin	Under Origin, specify the coordinates to define the center from the Location of the package is offset. The default setting specifies the center of the 3D Modeler.
Size	Under Size, specify the length of the package in each coordinate direction. The coordinate direction represented by Package Thickness depends on the selected Plane.
Model Specs	Under Model Specs, specify the Model Type as Detailed, Compact Conduction Model (CCM), Characterize JC, or Characterize JB and select a Symmetry.
Board Size	Under Board Size, when the Model Type is Characterize JB, specify the length of the board in each coordinate direction. The coordinate direction represented by Board Thickness depends on the selected Plane.

Mold	Under Mold, select the material for the mold.
Wire Bonds	Under Wire Bonds, specify the diameter, average length, and material of the of the wire bonds.
Spreader Slug	Under Spreader Slug, specify the length of the spreader slug in each coordinate direction. The coordinate direction represented by Thickness depends on the selected Plane.

Die	Under Die, specify the length of the die in each coordinate direction. The coordinate direction represented by Height depends on the selected Plane. Also, specify the die material.
Die Attach	Under Die Attach, specify the thickness of the die attach material and the material.

Die Source	Under Die Source, specify if the package has evenly distributed die sources and/or concentrated. Also, if Evenly Distributed Source is selected, specify the source power. If Concentrated Sources is selected, select how many sources to include in the package.
Source(s)	If Concentrated Sources is selected, on the Source tab(s), specify the source power, the offsets (from the center of the die), and the lengths of the sides.

Leads

Under Leads, specify the number of leads along the axes and the lead pitch, width, length, thickness, and material.

Iron Python Script – LCC.py:

The following is the toolkit's scripting information.

scriptInput = ["ng"]

scriptInput.append("Name:LCC1")

scriptInput.append("Plane:YZ")

scriptInput.append("length_unit:meter")

scriptInput.append("power_unit:W")

scriptInput.append("xS:-0.0075")

scriptInput.append("yS:-0.0075")

scriptInput.append("zS:-0.0075")

scriptInput.append("xO:0.0")

scriptInput.append("yO:0.0")

scriptInput.append("zO:0.0")

scriptInput.append("Len1:0.015")

scriptInput.append("Len2:0.015")

scriptInput.append("Thick:0.0016")

scriptInput.append("Type:Detailed")

scriptInput.append("boardLen1:0.0252")

scriptInput.append("boardLen2:0.0252")

scriptInput.append("boardThick:0.0016")

scriptInput.append("Symmetry:Full")

scriptInput.append("MoldMaterial:Epoxy Resin-Typical")

scriptInput.append("SlugMaterial:Cu-Pure")

scriptInput.append("WireMaterial:Au-Typical")

scriptInput.append("WireDiameter:0.000025")

scriptInput.append("slugLen1:0.0119")

scriptInput.append("slugLen2:0.0119")

scriptInput.append("slugThick:0.00036")

scriptInput.append("dieLen1:0.00856")

scriptInput.append("dieLen2:0.00856")

scriptInput.append("dieHeight:0.00035")

scriptInput.append("dieMat:Si-Typical")

scriptInput.append("attachThick:0.00005")

scriptInput.append("attachMat:Epoxy Resin-Typical")

scriptInput.append("DistributedSource:None")

scriptInput.append("SourcePower:1.0")

scriptInput.append("ConcentratedSource:Checked")

scriptInput.append("Source1:Checked")

scriptInput.append("Source2:None")

scriptInput.append("Source3:Checked")

scriptInput.append("Source4:None")

# enter source info: sourcePower,offset1,offset2,size1,size2

scriptInput.append("SourcePower1:1.0,0.001,0.001,0.002,0.002")

scriptInput.append("SourcePower2:1.0,0.001,-0.003,0.002,0.002")

scriptInput.append("SourcePower3:1.0,-0.003,0.001,0.002,0.002")

scriptInput.append("SourcePower4:1.0,-0.003,-0.003,0.002,0.002")

scriptInput.append("LeadCount1:10")

scriptInput.append("LeadCount2:7")

scriptInput.append("LeadPitch:0.001")

scriptInput.append("LeadWidth:0.0005")

scriptInput.append("LeadLength:0.0005")

scriptInput.append("LeadThick:0.0005")

scriptInput.append("LeadMaterial:Solder-pb50_sn50")

oDesign.RunToolkit("SysLib", "Geometry/Packages/LCC", [])

oDesign.RunToolkit("SysLib", "Geometry/Packages/LCC", ["ng"])

oDesign.RunToolkit("SysLib", "Geometry/Packages/LCC", scriptInput)