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Add SOIC SMD Package

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MS3FGX
2022-07-02 20:10:35 -04:00
parent fa49ae09fa
commit 26bfe96614
2 changed files with 56 additions and 0 deletions
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50
vitamins/smd.scad
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@@ -178,3 +178,53 @@ module smd_sot(type, value) { //! Draw an SMD transistor
text(value, halign = "center", valign = "center");
}
function smd_soic_size(type) = type[1]; //! Body length, width and height
function smd_soic_z(type) = type[2]; //! Height above PCB surface
function smd_soic_lead_z(type) = type[3]; //! Top of lead frame from top
function smd_soic_lead_pitch(type) = type[4]; //! Lead pitch
function smd_soic_lead_span(type) = type[5]; //! Total span of leads
function smd_soic_lead_size(type) = type[6]; //! Lead width, foot depth, lead thickness
module smd_soic(type, value) { //! Draw an SMD SOIC
vitamin(str("smd_soic(", type[0], "): ", type[0], " package ", value));
size = smd_soic_size(type);
z0 = smd_soic_z(type);
z2 = z0 + size.z;
z1 = z2 - smd_soic_lead_z(type);
slant = 5; //! 5 degree body draft angle
pitch = smd_soic_lead_pitch(type);
span = (smd_soic_lead_span(type) / 2);
leads = floor(size.x / pitch) + 1;
ls = smd_soic_lead_size(type);
r = ls.z;
gullwing = rounded_path([[0, 0, ls.z / 2], [0, ls.y - ls.z, ls.z / 2], r, [0, ls.y -ls.z + z1 - ls.z, z1 - ls.z / 2], r, [0, span / 2, z1 - ls.z / 2]], $fn = 32);
color(grey(20))
hull()
for(z = [z0, z1, z2], inset = abs(z - z1) * tan(slant))
translate_z(z)
cube([size.x - 2 * inset, size.y - 2 * inset, eps], center = true);
color(silver) {
for(i = [0 : leads - 1]) {
translate([i * pitch - size.x / 2 + (size.x - (leads - 1) * pitch) / 2, -span])
sweep(gullwing, rectangle_points(ls.x, ls.z));
rotate(180)
translate([0, -span / 2])
translate([i * pitch - size.x / 2 + (size.x - (leads - 1) * pitch) / 2, -span / 2])
sweep(gullwing, rectangle_points(ls.x, ls.z));
}
}
color("white")
translate_z(z0 + size.z)
linear_extrude(eps)
resize([size.x - 4 * (z2 - z1) * tan(slant), size.y / 2])
text(value, halign = "center", valign = "center");
}

6
vitamins/smds.scad
View File

@@ -44,4 +44,10 @@ SOT223 = ["SOT223", [6.5, 3.5, 1.6], 0.05, 0.89, 2.3, 7.0, [0.7, 0.95, 0.25], 3]
smd_sots = [SOT23, SOT223];
SOIC8 = ["SOIC8", [4.90, 3.90, 1.25], 0.10, 0.66, 1.27, 6.00, [0.31, .40, 0.20]];
SOIC16 = ["SOIC16", [9.90, 3.90, 1.25], 0.10, 0.66, 1.27, 6.00, [0.31, .40, 0.20]];
SOIC18 = ["SOIC18", [11.40, 7.70, 2.00], 0.10, 1.00, 1.27, 10.30, [0.31, .40, 0.20]];
smd_soics = [SOIC8, SOIC16, SOIC18];
use <smd.scad>