Added SMD Tantalum caps and 0502 and 0402 resistor and capacitors.

readme.md

@@ -2526,12 +2526,19 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 |   1 | `smd_led(LED0603, orange)` |  SMD LED 0603 orange |
 |   1 | `smd_led(LED0805, red)` |  SMD LED 0805 red |
 |   1 | `smd_led(LED1206, blue)` |  SMD LED 1306 blue |
+|   1 | `smd_tant(TANT_A)` |  SMD Tantalum capacitor package A ,1uF, 2.5V |
+|   1 | `smd_tant(TANT_B)` |  SMD Tantalum capacitor package B ,10uF, 10V |
+|   1 | `smd_tant(TANT_C)` |  SMD Tantalum capacitor package C ,100uF, 16V |
+|   1 | `smd_capacitor(CAP0402)` |  SMD capacitor 0402 10nF |
+|   1 | `smd_capacitor(CAP0502)` |  SMD capacitor 0502 10nF |
 |   1 | `smd_capacitor(CAP0603)` |  SMD capacitor 0603 10nF |
 |   1 | `smd_capacitor(CAP0805)` |  SMD capacitor 0805 100nF |
 |   1 | `smd_capacitor(CAP1206)` |  SMD capacitor 1206 1uF |
-|   1 | `smd_resistor(RES0603, 1K)` |  SMD resistor 0603 1K 0.1W |
+|   1 | `smd_resistor(RES0402, 1)` |  SMD resistor 0402 1 0.0625W |
+|   1 | `smd_resistor(RES0502, 10)` |  SMD resistor 0502 10 0.05W |
+|   1 | `smd_resistor(RES0603, 100)` |  SMD resistor 0603 100 0.1W |
 |   1 | `smd_resistor(RES0805, 1K)` |  SMD resistor 0805 1K 0.125W |
-|   1 | `smd_resistor(RES1206, 1K)` |  SMD resistor 1206 1K 0.25W |
+|   1 | `smd_resistor(RES1206, 1M)` |  SMD resistor 1206 1M 0.25W |
 |   1 | `smd_soic(SOIC14)` |  SOIC14 package 74HC00 |
 |   1 | `smd_soic(SOIC16)` |  SOIC16 package ICL323 |
 |   1 | `smd_soic(SOIC18)` |  SOIC18 package PIC18F88 |
@@ -3812,6 +3819,21 @@ SK shaft support brackets
 ## SMDs
 Surface mount components for PCBs.
 
+Note that the value string for tantalum capacitors is the the capacitance in pico farads expressed as two digits plus an exponent plus a single letter voltage code.
+E.g. 475A is 4.7uF 10V on the parts list.
+
+| Code | Voltage |
+| ---- | ------- |
+| e | 2.5 |
+| G | 4 |
+| J | 6.3 |
+| A | 10 |
+| C | 16 |
+| D | 20 |
+| E | 25 |
+| V | 35 |
+| H | 50 |
+
 [vitamins/smds.scad](vitamins/smds.scad) Object definitions.
 
 [vitamins/smd.scad](vitamins/smd.scad) Implementation.
@@ -3823,6 +3845,7 @@ Surface mount components for PCBs.
 |:--- |:--- |
 | `smd_cap_end_cap(type)` | End cap width |
 | `smd_cap_size(type)` | Body length, width |
+| `smd_diode_colour(type)` | Body colour |
 | `smd_diode_lead_z(type)` | Top of lead frame from top |
 | `smd_diode_leads(type)` | Lead extent in x, width, thickness and gap |
 | `smd_diode_size(type)` | Body length, width and height |
@@ -3855,6 +3878,11 @@ Surface mount components for PCBs.
 | `smd_sot_size(type)` | Body length, width and height |
 | `smd_sot_tab_width(type)` | The wide lead at the top |
 | `smd_sot_z(type)` | Height above PCB surface |
+| `smd_tant_colours(type)` | Colours of body and stripe |
+| `smd_tant_lead_z(type)` | Top of lead frame from top |
+| `smd_tant_leads(type)` | Lead extent in x, width, thickness and gap |
+| `smd_tant_size(type)` | Body length, width and height |
+| `smd_tant_z(type)` | Height above PCB surface |
 
 ### Functions
 | Function | Description |
@@ -3874,6 +3902,7 @@ Surface mount components for PCBs.
 | `smd_resistor(type, value)` | Draw an SMD resistor with specified value |
 | `smd_soic(type, value)` | Draw an SMD SOIC |
 | `smd_sot(type, value)` | Draw an SMD transistor |
+| `smd_tant(type, value)` | Draw an SMD tantalum capacitor |
 
 ![smds](tests/png/smds.png)
 
@@ -3885,10 +3914,17 @@ Surface mount components for PCBs.
 |   1 | `smd_led(LED0603, green)` |  SMD LED 0603 green |
 |   1 | `smd_led(LED0805, blue)` |  SMD LED 0805 blue |
 |   1 | `smd_led(LED1206, red)` |  SMD LED 1306 red |
+|   1 | `smd_tant(TANT_A)` |  SMD Tantalum capacitor package A ,1uF, 2.5V |
+|   1 | `smd_tant(TANT_B)` |  SMD Tantalum capacitor package B ,10uF, 6.3V |
+|   1 | `smd_tant(TANT_C)` |  SMD Tantalum capacitor package C ,100uF, 10V |
+|   1 | `smd_capacitor(CAP0402)` |  SMD capacitor 0402 |
+|   1 | `smd_capacitor(CAP0502)` |  SMD capacitor 0502 |
 |   1 | `smd_capacitor(CAP0603)` |  SMD capacitor 0603 |
 |   1 | `smd_capacitor(CAP0805)` |  SMD capacitor 0805 |
 |   1 | `smd_capacitor(CAP1206)` |  SMD capacitor 1206 |
-|   1 | `smd_resistor(RES0603, 1R0)` |  SMD resistor 0603 1R0 0.1W |
+|   1 | `smd_resistor(RES0402, 1R0)` |  SMD resistor 0402 1R0 0.0625W |
+|   1 | `smd_resistor(RES0502, 10)` |  SMD resistor 0502 10 0.05W |
+|   1 | `smd_resistor(RES0603, 100)` |  SMD resistor 0603 100 0.1W |
 |   1 | `smd_resistor(RES0805, 10M)` |  SMD resistor 0805 10M 0.125W |
 |   1 | `smd_resistor(RES1206, 100K)` |  SMD resistor 1206 100K 0.25W |
 |   1 | `smd_soic(SOIC14)` |  SOIC14 package SOIC14 |

tests/PCB.scad

@@ -62,19 +62,26 @@ test_pcb = ["test_pcb", "Test PCB",
     [
         [ 20, -5,  180, "trimpot10"],
         [ 20, -15,  90, "trimpot10", true],
-        [  7,  2,   90, "smd_led", LED1206, "blue"],
+        [ 19,  2,   90, "smd_led", LED1206, "blue"],
-        [ 10,  2,   90, "smd_led", LED0805, "red"],
+        [ 16,  2,   90, "smd_led", LED0805, "red"],
         [ 13,  2,   90, "smd_led", LED0603, "orange"],
-        [ 16,  2,   90, "smd_res", RES1206, "1K"],
+        [ 19,  6,  -90, "smd_res", RES1206, "1M"],
-        [ 19,  2,   90, "smd_res", RES0805, "1K"],
+        [ 16,  6,  -90, "smd_res", RES0805, "1K"],
-        [ 22,  2,   90, "smd_res", RES0603, "1K"],
+        [ 13,  6,  -90, "smd_res", RES0603, "100"],
-        [ 25,  2,   90, "smd_cap", CAP1206, 1.5, "1uF"],
+        [ 10,  6,  -90, "smd_res", RES0502, "10"],
-        [ 28,  2,   90, "smd_cap", CAP0805, 1.0, "100nF"],
+        [  7,  6,  -90, "smd_res", RES0402, "1"],
-        [ 31,  2,   90, "smd_cap", CAP0603, 0.7, "10nF"],
+        [ 19, 10,   90, "smd_cap", CAP1206, 1.5, "1uF"],
-        [ 34,  3,   90, "smd_diode",DO241AC, "SS34"],
+        [ 16, 10,   90, "smd_cap", CAP0805, 1.0, "100nF"],
-        [ 21,  6,  -90, "smd_pot", TC33X1, "10K"],
+        [ 13, 10,   90, "smd_cap", CAP0603, 0.7, "10nF"],
-        [ 16,  6,  -90, "smd_sot", SOT23, "2N7000"],
+        [ 10, 10,   90, "smd_cap", CAP0502, 0.6, "10nF"],
-        [ 28,  8,  -90, "smd_sot", SOT223, "LM117"],
+        [  7, 10,   90, "smd_cap", CAP0402, 0.5, "10nF"],
+        [ 19, 16,  -90, "smd_tant", TANT_C, "107C"],
+        [ 13, 16,  -90, "smd_tant", TANT_B, "106A"],
+        [  7, 16,  -90, "smd_tant", TANT_A, "105e"],
+        [ 32,  3,  -90, "smd_diode",DO241AC, "SS34"],
+        [ 26,  2,  -90, "smd_pot", TC33X1, "10K"],
+        [ 28,  6,  -90, "smd_sot", SOT23, "2N7000"],
+        [ 28, 12,  -90, "smd_sot", SOT223, "LM117"],
 
         [ 45,  35,   0, "2p54header", 4, 1],
         [ 60,  35,   0, "2p54header", 5, 1, false, "blue" ],

tests/SMDs.scad

@@ -23,7 +23,7 @@ include <../vitamins/smds.scad>
 
 module smds() {
     layout([for(r = smd_resistors) smd_res_size(r).x], 1)
-        smd_resistor(smd_resistors[$i], ["1R0", "10M", "100K"][$i % 3]);
+        smd_resistor(smd_resistors[$i], ["1R0", "10", "100", "10M", "100K"][$i % 5]);
 
     translate([0, 3])
         layout([for(l = smd_leds) smd_led_size(l).x], 1)
@@ -35,27 +35,32 @@ module smds() {
                 smd_capacitor(c, smd_cap_size(c).y * 0.8);
 
     translate([0, 9])
-        layout([for(d = smd_diodes) smd_diode_size(d).x], 1)
+        layout([for(t = smd_tants) smd_tant_leads(t).x], 1)
+            let(t = smd_tants[$i])
+                smd_tant(t, ["105e","106J", "107A"][$i]);
+
+    translate([0, 12.5])
+        layout([for(d = smd_diodes) smd_diode_leads(d).x], 1)
             let(d = smd_diodes[$i])
                 smd_diode(d, ["SS34"][$i]);
 
-    translate([0, 15])
+    translate([0, 24])
         layout([for(s = smd_sots) smd_sot_size(s).x], 1)
             let(s = smd_sots[$i])
                 smd_sot(s, ["2N7000", "FZT851"][$i]);
 
-    translate([0, 21])
+    translate([0, 18])
         layout([for(p = smd_pots) smd_pot_size(p).x], 1)
             let(p = smd_pots[$i])
                 smd_pot(p, "10K");
 
-    translate([0, 28])
+    translate([0, 31])
         layout([for(s = smd_soics) smd_soic_size(s).x], 1)
             let(s = smd_soics[$i])
                 smd_soic(s, s[0]);
 
-    translate([0, 36])
+    translate([0, 39])
-        layout([for(i = smd_inductors) smd_inductor_size(i).x], 1)
+        layout([for(i = smd_inductors) smd_inductor_leads(i).x], 1)
             let(i = smd_inductors[$i])
                 smd_inductor(i, "4R7");
 }

vitamins/pcb.scad

@@ -1146,6 +1146,7 @@ module pcb_component(comp, cutouts = false, angle = undef) { //! Draw pcb compon
             if(show(comp, "buzzer"))        buzzer(param(4, 9), param(5, 12), param(6, grey(20)));
             if(show(comp, "smd_res"))       smd_resistor(comp[4], comp[5]);
             if(show(comp, "smd_cap"))       smd_capacitor(comp[4], comp[5], param(6, undef));
+            if(show(comp, "smd_tant"))      smd_tant(comp[4], param(5, undef));
             if(show(comp, "smd_sot"))       smd_sot(comp[4], comp[5]);
             if(show(comp, "smd_soic"))      smd_soic(comp[4], comp[5]);
             if(show(comp, "smd_diode"))     smd_diode(comp[4], comp[5]);

vitamins/smd.scad

@@ -19,6 +19,21 @@
 
 //
 //! Surface mount components for PCBs.
+//!
+//! Note that the value string for tantalum capacitors is the the capacitance in pico farads expressed as two digits plus an exponent plus a single letter voltage code.
+//! E.g. 475A is 4.7uF 10V on the parts list.
+//!
+//! | Code | Voltage |
+//! | ---- | ------- |
+//! | e | 2.5 |
+//! | G | 4 |
+//! | J | 6.3 |
+//! | A | 10 |
+//! | C | 16 |
+//! | D | 20 |
+//! | E | 25 |
+//! | V | 35 |
+//! | H | 50 |
 //
 include <../utils/core/core.scad>
 
@@ -234,6 +249,7 @@ function smd_diode_size(type)   = type[1]; //! Body length, width and height
 function smd_diode_z(type)      = type[2]; //! Height above PCB surface
 function smd_diode_lead_z(type) = type[3]; //! Top of lead frame from top
 function smd_diode_leads(type)  = type[4]; //! Lead extent in x, width, thickness and gap
+function smd_diode_colour(type) = type[5]; //! Body colour
 
 module smd_diode(type, value) { //! Draw an SMD diode
     vitamin(str("smd_diode(", type[0], "): ", type[0], " package ", value));
@@ -248,7 +264,7 @@ module smd_diode(type, value) { //! Draw an SMD diode
     gap = leads[3];
     gap2 = gap - leads.z * 2;
 
-    color(grey(20))
+    color(smd_diode_colour(type))
         difference() {
             hull()
                 for(z = [z0, z1, z2], inset = abs(z - z1) * tan(slant))
@@ -287,6 +303,75 @@ module smd_diode(type, value) { //! Draw an SMD diode
 
 }
 
+function smd_tant_size(type)   = type[1]; //! Body length, width and height
+function smd_tant_z(type)      = type[2]; //! Height above PCB surface
+function smd_tant_lead_z(type) = type[3]; //! Top of lead frame from top
+function smd_tant_leads(type)  = type[4]; //! Lead extent in x, width, thickness and gap
+function smd_tant_colours(type)= type[5]; //! Colours of body and stripe
+
+module smd_tant(type, value) { //! Draw an SMD tantalum capacitor
+    function dig(c) = let(x = ord(c) - ord("0")) assert(x >= 0 && x <= 9, "expected value in the form 475A for 4.7uF 10V") x;
+    uF = is_undef(value) ? "" : str(" ,", (dig(value[0]) * 10 + dig(value[1])) * 10 ^ dig(value[2]) / 10^6, "uF");
+    codes = "eGJACDEVH";
+    voltages = [2.5, 4, 6.3, 10, 16, 20, 25, 35, 50];
+    volts = is_undef(value) ? "" : let(c = value[3])
+        assert(in(codes, c), str("expected the 4th character of value to be a voltage code: ", codes, ", got ", c))
+            str(", ", voltages[search(c, codes)[0]], "V");
+    vitamin(str("smd_tant(", type[0], "): SMD Tantalum capacitor package ", type[0][len(type[0]) -1], uF, volts));
+
+    size = smd_tant_size(type);
+    slant = 5;                              //! 5 degree body draft angle
+    z0 = smd_tant_z(type);
+    z2 = z0 + size.z;
+    z1 = z2 - smd_tant_lead_z(type);
+    stripe = size.x / 5;
+    leads = smd_tant_leads(type);
+    gap = leads[3];
+    gap2 = gap - leads.z * 2;
+    colours = smd_tant_colours(type);
+    inset = (z2 - z1) * tan(slant);
+
+    color(colours[0])
+        difference() {
+            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);
+
+            for(side = [-1, 1])
+                translate([side * (size.x / 2 - (size.x - gap2) / 4), 0, eps])
+                    cube([(size.x - gap2) / 2, size.y, 3 * leads.z], center = true);
+        }
+
+    color("white") {
+        w = 0.9 * (size.x - stripe - inset);
+        translate([-size.x / 2 + inset + stripe + w / 2, 0, z2])
+            linear_extrude(eps)
+                resize([w, size.y / 2])
+                    text(value, halign = "center", valign = "center");
+    }
+
+    color(colours[1]) {
+        translate([-size.x / 2 + stripe * 0.2, -size.y / 2 + inset, z2])
+            cube([(stripe - inset) * 0.8, size.y - 2 * inset, eps]);
+    }
+
+    color(silver)
+        translate_z(z1 / 2)
+            rotate([90, 0, 0])
+                linear_extrude(leads.y, center = true, convexity = 3)  let($fn = 32)
+                    difference() {
+                        rounded_square([leads.x, z1], 2 * leads.z);
+
+                        rounded_square([leads.x - 2 * leads.z, z1 - 2 * leads.z], leads.z);
+
+                        translate([0, - z1 / 2])
+                            square([gap, leads.z * 2 + eps], center = true);
+                    }
+
+}
+
+
 function smd_inductor_size(type)   = type[1]; //! Body length, width and height
 function smd_inductor_z(type)      = type[2]; //! Height above PCB surface
 function smd_inductor_lead_z(type) = type[3]; //! Top of lead frame from top

vitamins/smds.scad

@@ -27,34 +27,44 @@ LED1206 = ["LED1206", [3.2, 1.6, 0.5], [2.0, 1.6, .6]];
 
 smd_leds = [LED0603, LED0805, LED1206];
 
+RES0402 = ["RES0402", [1.0, 0.5, 0.35], 0.2, 1/16];
+RES0502 = ["RES0502", [1.3, 0.6, 0.38], 0.2, 1/20];
 RES0603 = ["RES0603", [1.6, 0.8, 0.45], 0.3, 1/10];
 RES0805 = ["RES0805", [2.0, 1.2, 0.45], 0.4, 1/8];
 RES1206 = ["RES1206", [3.1, 1.6, 0.6],  0.5, 1/4];
 
-smd_resistors = [RES0603, RES0805, RES1206];
+smd_resistors = [RES0402, RES0502, RES0603, RES0805, RES1206];
 
+CAP0402 = ["CAP0402", [1.0, 0.5], 0.2];
+CAP0502 = ["CAP0502", [1.3, 0.6], 0.2];
 CAP0603 = ["CAP0603", [1.6, 0.8], 0.3];
 CAP0805 = ["CAP0805", [2.0, 1.2], 0.4];
 CAP1206 = ["CAP1206", [3.1, 1.6], 0.5];
 
-smd_capacitors = [CAP0603, CAP0805, CAP1206];
+smd_capacitors = [CAP0402, CAP0502, CAP0603, CAP0805, CAP1206];
 
 SOT23  = ["SOT23",  [3,   1.4, 1.0], 0.05, 0.66, 1.9, 2.6, [0.4, 0.45,  0.15], 0.4];
 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, .50, 0.20]];
+SOIC8  = ["SOIC8",  [4.90, 3.90, 1.25], 0.10, 0.66, 1.27, 6.00,  [0.31, .50, 0.20]];
-SOIC14 = ["SOIC14", [8.70, 3.90, 1.25], 0.10, 0.66, 1.27, 6.00, [0.31, .50, 0.20]];
+SOIC14 = ["SOIC14", [8.70, 3.90, 1.25], 0.10, 0.66, 1.27, 6.00,  [0.31, .50, 0.20]];
-SOIC16 = ["SOIC16", [9.90, 3.90, 1.25], 0.10, 0.66, 1.27, 6.00, [0.31, .50, 0.20]];
+SOIC16 = ["SOIC16", [9.90, 3.90, 1.25], 0.10, 0.66, 1.27, 6.00,  [0.31, .50, 0.20]];
 SOIC18 = ["SOIC18", [11.40,7.50, 2.00], 0.10, 1.20, 1.27, 10.30, [0.31, .50, 0.20]];
 
 smd_soics = [SOIC8, SOIC14, SOIC16, SOIC18];
 
-DO241AC = ["DO241AC", [4.0, 2.5, 2.0], 0.1, 1, [4.8, 1.2, 0.15, 2]];
+DO241AC = ["DO241AC", [4.0, 2.5, 2.0], 0.1, 1, [4.8, 1.2, 0.15, 2], grey(20)];
 
 smd_diodes = [DO241AC];
 
+TANT_A = ["TANT_A", [3.0, 1.6, 1.6], 0.1, 0.8,  [3.2, 1.2, 0.08, 1.1], ["#E9D769", "#E9B44A"]];
+TANT_B = ["TANT_B", [3.3, 2.8, 1.9], 0.1, 0.95, [3.5, 2.2, 0.08, 1.4], ["#E9D769", "#E9B44A"]];
+TANT_C = ["TANT_C", [5.8, 3.2, 2.6], 0.1, 1.3,  [6.0, 2.2, 0.08, 2.9], ["#E9D769", "#E9B44A"]];
+
+smd_tants = [TANT_A, TANT_B, TANT_C];
+
 IND2525 = ["IND2525", [6.75, 6.75, 2], 0.1, 1.75, [7.24, 3.2, 0.15, 4.4], grey(50)];
 
 smd_inductors = [IND2525];