diff --git a/library/dc-dc.dcm b/library/dc-dc.dcm
index c62de745..ca03dbb5 100644
--- a/library/dc-dc.dcm
+++ b/library/dc-dc.dcm
@@ -106,6 +106,18 @@ K BD9G341EFJ, Buck Converter
 F http://rohmfs.rohm.com/en/products/databook/datasheet/ic/power/switching_regulator/bd9778f-e.pdf
 $ENDCMP
 #
+$CMP CRE1S0305S3C
+D 3.3V to 5V 200mA DC-DC Converter with 3kV isolation 
+K isolated isolation dc-dc converter transformer
+F http://power.murata.com/datasheet?/data/power/ncl/kdc_cre1.pdf
+$ENDCMP
+#
+$CMP CRE1S0505S3C
+D 5V to 5V 200mA DC-DC Converter with 3kV isolation 
+K isolated isolation dc-dc converter transformer
+F http://power.murata.com/datasheet?/data/power/ncl/kdc_cre1.pdf
+$ENDCMP
+#
 $CMP GL2576-12SF8DR
 D 12V 3A, 52KHz Step Down Converter, SO8
 K 12V 3A 52KHz Buck DC/DC
diff --git a/library/dc-dc.lib b/library/dc-dc.lib
index e4e37ed2..5ad3f612 100644
--- a/library/dc-dc.lib
+++ b/library/dc-dc.lib
@@ -260,6 +260,26 @@ X VCC 8 -400 300 100 R 50 50 1 1 W
 ENDDRAW
 ENDDEF
 #
+# CRE1S0505S3C
+#
+DEF CRE1S0505S3C U 0 40 Y Y 1 F N
+F0 "U" -350 350 50 H V C CNN
+F1 "CRE1S0505S3C" 100 350 50 H V C CNN
+F2 "Converters_DCDC_ACDC:DCDC-Conv_muRata_CRExxxxxx3C" 0 -400 50 H I C CNN
+F3 "" 0 -500 50 H I C CNN
+ALIAS CRE1S0305S3C
+$FPLIST
+ DCDC*Conv*muRata*3C*
+$ENDFPLIST
+DRAW
+S -400 300 400 -300 0 1 10 f
+X -VIN 1 -500 -200 100 R 50 50 1 1 W
+X +VIN 2 -500 200 100 R 50 50 1 1 W
+X -VOUT 3 500 -200 100 L 50 50 1 1 w
+X +VOUT 4 500 200 100 L 50 50 1 1 w
+ENDDRAW
+ENDDEF
+#
 # GL2576-3.3SF8DR
 #
 DEF GL2576-3.3SF8DR U 0 40 Y Y 1 F N