diff --git a/library/ESD_Protection.dcm b/library/ESD_Protection.dcm
index 8b488438..d4952412 100644
--- a/library/ESD_Protection.dcm
+++ b/library/ESD_Protection.dcm
@@ -18,6 +18,12 @@ K USB suppressor
 F http://www.ti.com/lit/ds/symlink/sn65220.pdf
 $ENDCMP
 #
+$CMP SP0503BAHT
+D TVS Diode Array, 5.5V Standoff, Three Channels, SOT-143 package
+K usb esd protection suppression transient
+F http://www.littelfuse.com/~/media/files/littelfuse/technical%20resources/documents/data%20sheets/sp05xxba.pdf
+$ENDCMP
+#
 $CMP USB6B1
 D 5V Data line protection
 K ESD USB
diff --git a/library/ESD_Protection.lib b/library/ESD_Protection.lib
index 7c245436..400753fb 100644
--- a/library/ESD_Protection.lib
+++ b/library/ESD_Protection.lib
@@ -63,6 +63,27 @@ X D 4 500 0 200 L 50 50 2 1 I
 ENDDRAW
 ENDDEF
 #
+# SP0503BAHT
+#
+DEF SP0503BAHT D 0 40 Y N 3 F N
+F0 "D" 125 125 50 H V L CNN
+F1 "SP0503BAHT" 125 25 50 H V L CNN
+F2 "TO_SOT_Packages_SMD:SOT-143" 125 -75 50 H I L CNN
+F3 "" 125 125 50 H I C CNN
+$FPLIST
+ SOT-143*
+$ENDFPLIST
+DRAW
+X A 1 0 -200 100 U 50 50 0 0 I
+P 2 0 1 0 0 -100 0 100 N
+P 4 0 1 10 -75 75 -50 50 50 50 75 25 N
+P 4 0 1 10 75 -50 0 50 -75 -50 75 -50 F
+X K 2 0 200 100 D 50 50 1 1 I
+X K 3 0 200 100 D 50 50 2 1 I
+X K 4 0 200 100 D 50 50 3 1 I
+ENDDRAW
+ENDDEF
+#
 # SRV05
 #
 DEF SRV05 U 0 0 Y Y 1 F N