diff --git a/transistor/transistor_nmos_bss138.yaml b/transistor/transistor_nmos_bss138.yaml
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+name: BSS138
+description: n-channel enhancement mode vertical DMOS transistor
+keywords: transistor, MOSFET, nMOS
+datasheet: https://www.onsemi.com/pdf/datasheet/bss138-d.pdf
+
+pinout:
+  G: 1
+  S: 2
+  D: 3
+
+properties:
+  in: G
+  pasive: S, D
+
+schematic:
+  symbol: FET
+  options: n, diode
+
+housing:
+  outline: JEDEC TO-236 AB