diff --git a/diode/schottky_rb521s.yaml b/diode/schottky_rb521s.yaml
new file mode 100644
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--- /dev/null
+++ b/diode/schottky_rb521s.yaml
@@ -0,0 +1,22 @@
+name: RB521S30
+description: schottky barrier diode, 30V, 200mA, SOD-523
+datasheet: https://www.onsemi.com/pdf/datasheet/rb521s30t1-d.pdf
+lcsc: C122862
+
+schematic:
+  symbol: diode
+  options: schottky
+
+housing:
+  pattern: SOD
+  options: polarized
+  bodyWidth: 0.7-0.9 # E
+  bodyLength: 1.1-1.3 # D
+  height: 0.5-0.7 # A
+  leadWidth: 0.25-0.35 # b
+  leadLength: 0.30 # L
+  leadHeight: 0.07-0.20 # c
+  leadSpan: 1.5-1.7 # HE
+  padWidth: 0.40
+  padHeight: 0.48
+  padSpace: 0.84 # 1.8-0.48*2
diff --git a/diode/schottky_ss34.yaml b/diode/schottky_ss34.yaml
new file mode 100644
index 0000000..b3b935c
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+++ b/diode/schottky_ss34.yaml
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+name: SS34
+description: schottky barrier diode, 40V, 3A, SMA (DO-214AC)
+datasheet: https://www.onsemi.com/pdf/datasheet/ss39-d.pdf
+lcsc: C266553
+
+schematic:
+  symbol: diode
+  options: schottky
+
+housing:
+  outline: JEDEC DO-214 AC
+  options: polarized