diff --git a/mechanical/switch_mst23d18g2.yaml b/mechanical/switch_mst23d18g2.yaml
new file mode 100644
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+++ b/mechanical/switch_mst23d18g2.yaml
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+name: MST23D18G2
+description: switch, surface mount, slide, DP3T
+datasheet: https://datasheet.lcsc.com/lcsc/2110190930_SHOU-HAN-MST23D18G2-125_C2906281.pdf
+
+pinout: 1-8
+
+schematic:
+  symbol: switch
+  left: 1-4
+  right: 5-8
+
+housing:
+  pattern: custom
+  bodyWidth: 12.95
+  bodyLength: 3.5
+  height: 5.5
+  silkscreen: M -5 -1.5 5 -1.5
+
+  padWidth: 1.0
+  padHeight: 2.0
+  rowCount: 2
+  columnCount: 4
+  horizontalPitch: 2.0
+  verticalPitch: -6.0
+  padPosition: -4, 3, -2, 3, 2, 3, 4, 3, -4, -3, -2, -3, 2, -3, 4, -3