by adom
0603 Chip Inductor · 470 nH ±20% · 1.3 A (ΔL basis, max)
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Pads: square corners, as the datasheet draws them (no added rounding); viewers, lbr, insertion GLB, hero rebuilt from the footprint
10 files changed
+23−31
LQM18PNR47MFHD-fpview.html+3−3LQM18PNR47MFHD.adom-lbr.json+2−2LQM18PNR47MFHD.insertion.glbLQM18PNR47MFHD.kicad_mod+3−3LQM18PNR47MFHD.lbr+3−3README.md+3−4footprint-variants/LQM18PNR47MFHD.kicad_mod+3−3footprint-variants/LQM18PNR47MFHD.variants.json+3−10lqm18pnr47mfhd-hero.glblqm18pnr47mfhd-hero.overlay.json+3−3LQM18PNR47MFHD-fpview.html+3−3@@ -350,9 +350,9 @@ <rect x="1" y="1" width="2.5" height="1.3" fill="none" stroke="#FF26E2" stroke-width="0.05" stroke-dasharray="0.2,0.1"/> <rect x="1.45" y="1.25" width="1.6" height="0.8" fill="none" stroke="#6e7681" stroke-width="0.1"/> <line x1="2.01" y1="1.14" x2="2.49" y2="1.14" stroke="#00cccc" stroke-width="0.12" stroke-linecap="round"/><line x1="2.01" y1="2.16" x2="2.49" y2="2.16" stroke="#00cccc" stroke-width="0.12" stroke-linecap="round"/>-<rect x="1.25" y="1.3" width="0.65" height="0.7" rx="0.1" ry="0.1" fill="#C83434" stroke="#ef5350" stroke-width="0.04"/>+<rect x="1.25" y="1.3" width="0.65" height="0.7" rx="0" ry="0" fill="#C83434" stroke="#ef5350" stroke-width="0.04"/> <text x="1.575" y="1.65" text-anchor="middle" dominant-baseline="central" font-size="0.293" fill="#fff" font-family="sans-serif">1</text>-<rect x="2.6" y="1.3" width="0.65" height="0.7" rx="0.1" ry="0.1" fill="#C83434" stroke="#ef5350" stroke-width="0.04"/>+<rect x="2.6" y="1.3" width="0.65" height="0.7" rx="0" ry="0" fill="#C83434" stroke="#ef5350" stroke-width="0.04"/> <text x="2.925" y="1.65" text-anchor="middle" dominant-baseline="central" font-size="0.293" fill="#fff" font-family="sans-serif">2</text> </svg> </div>@@ -371,7 +371,7 @@ <div class="info-row"> - <div class="info-item"><span class="info-label">Desc</span><span class="info-value">Land pattern: Murata datasheet p.6</span></div><div class="info-item"><span class="info-label">Pads</span><span class="info-value">2 · 0.65 × 0.7 mm, r 0.1 mm</span></div><div class="info-item"><span class="info-label">Body</span><span class="info-value">1.6 × 0.8 mm</span></div><div class="info-item"><span class="info-label">Courtyard</span><span class="info-value">2.5 × 1.3 mm</span></div>+ <div class="info-item"><span class="info-label">Desc</span><span class="info-value">Land pattern: Murata reference specification JELF243B_0043K-01, p.6 (Land dimensions (reflow))</span></div><div class="info-item"><span class="info-label">Pads</span><span class="info-value">2 · 0.65 × 0.7 mm, r 0 mm</span></div><div class="info-item"><span class="info-label">Body</span><span class="info-value">1.6 × 0.8 mm</span></div><div class="info-item"><span class="info-label">Courtyard</span><span class="info-value">2.5 × 1.3 mm</span></div> </div> <div class="info-divider"></div> <div class="coord-row">
LQM18PNR47MFHD.adom-lbr.json+2−2@@ -99,7 +99,7 @@ "h_mm": 0.7, "drill_mm": 0.0, "rotation": 0.0,- "shape": "roundrect"+ "shape": "rect" }, { "number": "2",@@ -109,7 +109,7 @@ "h_mm": 0.7, "drill_mm": 0.0, "rotation": 0.0,- "shape": "roundrect"+ "shape": "rect" } ], "graphics": [
LQM18PNR47MFHD.insertion.glb⋯ 1 unchanged line ⋯
LQM18PNR47MFHD.kicad_mod+3−3@@ -2,7 +2,7 @@ (version 20240108) (generator "adom-basic-parts-overhaul") (layer "F.Cu")- (descr "Murata LQM18PNR47MFHD, 0603. Land pattern from Murata reference specification JELF243B_0043K-01, p.6 (Land dimensions (reflow)); corners: datasheet silent; roundrect radius 0.1 mm = min(0.25 x smaller pad side, 0.1 mm), IPC-7351C rounded corners for paste release")+ (descr "Murata LQM18PNR47MFHD, 0603. Land pattern from Murata reference specification JELF243B_0043K-01, p.6 (Land dimensions (reflow)); corners: square, as the datasheet draws them") (tags "0603") (attr smd) (fp_text reference "REF**" (at 0 -1.35) (layer "F.SilkS") (effects (font (size 1 1) (thickness 0.15))))@@ -11,6 +11,6 @@ (fp_rect (start -0.8 -0.4) (end 0.8 0.4) (stroke (width 0.1) (type default)) (fill none) (layer "F.Fab")) (fp_line (start -0.24 -0.51) (end 0.24 -0.51) (stroke (width 0.12) (type default)) (layer "F.SilkS")) (fp_line (start -0.24 0.51) (end 0.24 0.51) (stroke (width 0.12) (type default)) (layer "F.SilkS"))- (pad "1" smd roundrect (at -0.675 0) (size 0.65 0.7) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.1538))- (pad "2" smd roundrect (at 0.675 0) (size 0.65 0.7) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.1538))+ (pad "1" smd rect (at -0.675 0) (size 0.65 0.7) (layers "F.Cu" "F.Paste" "F.Mask"))+ (pad "2" smd rect (at 0.675 0) (size 0.65 0.7) (layers "F.Cu" "F.Paste" "F.Mask")) )
LQM18PNR47MFHD.lbr+3−3@@ -53,9 +53,9 @@ <description>0603 Chip Inductor · 470 nH ±20% · 1.3 A (ΔL basis, max)</description> <packages> <package name="LQM18PNR47MFHD">- <description>2 pads, 2.0 x 0.7 mm. Murata LQM18PNR47MFHD, 0603. Land pattern from Murata reference specification JELF243B_0043K-01, p.6 (Land dimensions (reflow)); corners: datasheet silent; roundrect radius 0.1 mm = min(0.25 x smaller pad side, 0.1 mm), IPC-7351C rounded corners for paste release</description>- <smd name="1" x="-0.6750" y="-0.0000" dx="0.6500" dy="0.7000" layer="1" roundness="31"/>- <smd name="2" x="0.6750" y="-0.0000" dx="0.6500" dy="0.7000" layer="1" roundness="31"/>+ <description>2 pads, 2.0 x 0.7 mm. Murata LQM18PNR47MFHD, 0603. Land pattern from Murata reference specification JELF243B_0043K-01, p.6 (Land dimensions (reflow)); corners: square, as the datasheet draws them</description>+ <smd name="1" x="-0.6750" y="-0.0000" dx="0.6500" dy="0.7000" layer="1"/>+ <smd name="2" x="0.6750" y="-0.0000" dx="0.6500" dy="0.7000" layer="1"/> <wire x1="-0.8000" y1="0.4000" x2="0.8000" y2="0.4000" width="0.1000" layer="51"/> <wire x1="0.8000" y1="0.4000" x2="0.8000" y2="-0.4000" width="0.1000" layer="51"/> <wire x1="0.8000" y1="-0.4000" x2="-0.8000" y2="-0.4000" width="0.1000" layer="51"/>
README.md+3−4@@ -38,11 +38,10 @@ Source: Land pattern from Murata reference specification JELF243B_0043K-01, p.6 | Gap between pads | 0.7 | 0.7 | 0.7 | 0.7 | | Centre to centre | 1.35 | 1.575 | 1.6 | 1.35 | | Overall | 2 | 2.45 | 2.5 | 2 |-| Corner radius | not specified | 0.2188 (ratio 0.25) | 0.225 (ratio 0.25) | 0.1 (ratio 0.1538) |+| Corner radius | not specified | 0.2188 (ratio 0.25) | 0.225 (ratio 0.25) | square (as drawn) |+Corners: square, as the datasheet draws them. The datasheet does not call for rounded corners, so the footprint does not add any. -Corners: the datasheet drawing shows plain rectangles and says nothing about corners, so the pads are KiCad roundrects with the radius held to 0.25 x the smaller pad side and no more than 0.1 mm. IPC-7351C favours rounded SMD pad corners for cleaner paste release and to avoid stress points; capping the radius keeps the copper area within 1.89 % of a square-cornered pad.--::adom-footprint-variants{src="/adom/lqm18pnr47mfhd/render/footprint-variants/LQM18PNR47MFHD.variants.json" heading="Pad corners: this footprint, square corners, KiCad default rounding"}+::adom-footprint-variants{src="/adom/lqm18pnr47mfhd/render/footprint-variants/LQM18PNR47MFHD.variants.json" heading="Pad corners: this footprint (square, as drawn) and KiCad default rounding (not used)"} ## Chip outline
footprint-variants/LQM18PNR47MFHD.kicad_mod+3−3@@ -2,7 +2,7 @@ (version 20240108) (generator "adom-basic-parts-overhaul") (layer "F.Cu")- (descr "Murata LQM18PNR47MFHD, 0603. Land pattern from Murata reference specification JELF243B_0043K-01, p.6 (Land dimensions (reflow)); corners: datasheet silent; roundrect radius 0.1 mm = min(0.25 x smaller pad side, 0.1 mm), IPC-7351C rounded corners for paste release")+ (descr "Murata LQM18PNR47MFHD, 0603. Land pattern from Murata reference specification JELF243B_0043K-01, p.6 (Land dimensions (reflow)); corners: square, as the datasheet draws them") (tags "0603") (attr smd) (fp_text reference "REF**" (at 0 -1.35) (layer "F.SilkS") (effects (font (size 1 1) (thickness 0.15))))@@ -11,6 +11,6 @@ (fp_rect (start -0.8 -0.4) (end 0.8 0.4) (stroke (width 0.1) (type default)) (fill none) (layer "F.Fab")) (fp_line (start -0.24 -0.51) (end 0.24 -0.51) (stroke (width 0.12) (type default)) (layer "F.SilkS")) (fp_line (start -0.24 0.51) (end 0.24 0.51) (stroke (width 0.12) (type default)) (layer "F.SilkS"))- (pad "1" smd roundrect (at -0.675 0) (size 0.65 0.7) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.1538))- (pad "2" smd roundrect (at 0.675 0) (size 0.65 0.7) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.1538))+ (pad "1" smd rect (at -0.675 0) (size 0.65 0.7) (layers "F.Cu" "F.Paste" "F.Mask"))+ (pad "2" smd rect (at 0.675 0) (size 0.65 0.7) (layers "F.Cu" "F.Paste" "F.Mask")) )
footprint-variants/LQM18PNR47MFHD.variants.json+3−10@@ -5,21 +5,14 @@ "variants": [ { "suffix": "",- "device": "this page",+ "device": "this page (square, as drawn)", "kicad_mod": "LQM18PNR47MFHD.kicad_mod", "footprintName": "LQM18PNR47MFHD",- "changed": "the page footprint: roundrect, corner radius 0.1 mm (ratio 0.1538)"- },- {- "suffix": "-SQ",- "device": "square corners",- "kicad_mod": "LQM18PNR47MFHD-SQ.kicad_mod",- "footprintName": "LQM18PNR47MFHD-SQ",- "changed": "same pads as plain rectangles, as the datasheet draws them"+ "changed": "the page footprint: plain rectangles, square corners, as the datasheet draws them" }, { "suffix": "-RR25",- "device": "KiCad default rounding",+ "device": "KiCad default rounding (not used)", "kicad_mod": "LQM18PNR47MFHD-RR25.kicad_mod", "footprintName": "LQM18PNR47MFHD-RR25", "changed": "same pads with roundrect_rratio 0.25 (KiCad's default), radius 0.1625 mm"
lqm18pnr47mfhd-hero.glb⋯ 1 unchanged line ⋯
lqm18pnr47mfhd-hero.overlay.json+3−3@@ -69,7 +69,7 @@ "glb": "LQM18PNR47MFHD.glb", "glb_sha256": "4d7a7e7453518affab221b8c6c771d718274168a23c4674446ac9e0caec4d53f", "footprint": "LQM18PNR47MFHD.kicad_mod",- "footprint_sha256": "62d2ae35f208bf885cf3c762db595625f52abc50f2f66b8aacf53981996b6321",+ "footprint_sha256": "835d9384f246b14d7aba431c4e58291596bf139928a728565edd73f843adf450", "pins": "page.json component.pins", "pins_sha256": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855" },@@ -97,7 +97,7 @@ "pads": [ { "number": "1",- "shape": "roundrect",+ "shape": "rect", "center_mm": [ -0.675, 0.0@@ -110,7 +110,7 @@ }, { "number": "2",- "shape": "roundrect",+ "shape": "rect", "center_mm": [ 0.675, 0.0