diff --git a/library/conn.dcm b/library/conn.dcm
index bb7199d8..797e2426 100644
--- a/library/conn.dcm
+++ b/library/conn.dcm
@@ -100,11 +100,6 @@ D audio jack TRS 6 pins
 K audio jack connector TRS
 $ENDCMP
 #
-$CMP MC34063
-D 1.5A step up/down/inverting switching regulator
-F regulator/mc34063.pdf
-$ENDCMP
-#
 $CMP PCI_5V_32BIT
 D Connecteur BUS PCI
 K PCI
diff --git a/library/conn.lib b/library/conn.lib
index c5640774..fea72cd8 100644
--- a/library/conn.lib
+++ b/library/conn.lib
@@ -8246,26 +8246,6 @@ X ~ 6 -600 200 300 R 60 60 1 2 P
 ENDDRAW
 ENDDEF
 #
-# MC34063
-#
-DEF MC34063 U 0 40 Y Y 1 F N
-F0 "U" 150 350 60 H V L CNN
-F1 "MC34063" 100 -350 60 H V L CNN
-F2 "" 0 0 60 H V C CNN
-F3 "" 0 0 60 H V C CNN
-DRAW
-S 550 300 -550 -300 0 1 0 N
-X Sw_Coll 1 850 100 300 L 50 50 1 1 I
-X Sw_Emit 2 850 -50 300 L 50 50 1 1 I
-X Tim_Cap 3 -850 -150 300 R 50 50 1 1 I
-X GND 4 0 -500 200 U 50 50 1 1 W
-X V_Sense 5 850 -200 300 L 50 50 1 1 I
-X VCC 6 0 500 200 D 50 50 1 1 W
-X I_Sense 7 -850 150 300 R 50 50 1 1 I
-X Drv_Coll 8 850 200 300 L 50 50 1 1 I
-ENDDRAW
-ENDDEF
-#
 # PAL20
 #
 DEF PAL20 J 0 40 Y Y 1 F N