Changed Q1 to MMBT3904

It used to be an MMBT2222, now it's an MMBT3904.  The new transistor is
slightly lower-spec'd, but is still more than plenty for this
application.  Also, it's a MacroFab house part, so the boards will be
even cheaper to manufacture.

pd-buddy-sink/output.sch

 	1    0    0    1   
 $EndComp
 $Comp
-L MMBT2222AL Q1
-U 1 1 588FA577
-P 5450 4050
-F 0 "Q1" H 5650 4125 50  0000 L CNN
-F 1 "MMBT2222ALT1G" H 5650 4050 50  0000 L CNN
-F 2 "TO_SOT_Packages_SMD:SOT-23" H 5650 3975 50  0001 L CIN
-F 3 "" H 5450 4050 50  0000 L CNN
-	1    5450 4050
-	1    0    0    -1  
-$EndComp
-$Comp
 L Screw_Terminal_1x02 J1
 U 1 1 588FA688
 P 7000 4050
 	1    6500 3050
 	1    0    0    -1  
 $EndComp
+$Comp
+L MMBT3904 Q1
+U 1 1 59625136
+P 5450 4050
+F 0 "Q1" H 5650 4125 50  0000 L CNN
+F 1 "MMBT3904" H 5650 4050 50  0000 L CNN
+F 2 "TO_SOT_Packages_SMD:SOT-23" H 5650 3975 50  0001 L CIN
+F 3 "" H 5450 4050 50  0001 L CNN
+	1    5450 4050
+	1    0    0    -1  
+$EndComp
 $EndSCHEMATC

pd-buddy-sink/pd-buddy-sink-cache.lib

 ENDDRAW
 ENDDEF
 #
+# BC817
+#
+DEF BC817 Q 0 0 Y N 1 F N
+F0 "Q" 200 75 50 H V L CNN
+F1 "BC817" 200 0 50 H V L CNN
+F2 "TO_SOT_Packages_SMD:SOT-23" 200 -75 50 H I L CIN
+F3 "" 0 0 50 H I L CNN
+ALIAS BC818 BC847 BC848 BC849 BC850 MMBT3904
+$FPLIST
+ SOT?23*
+$ENDFPLIST
+DRAW
+C 50 0 111 0 1 10 N
+P 2 0 1 0 25 25 100 100 N
+P 3 0 1 0 25 -25 100 -100 100 -100 N
+P 3 0 1 20 25 75 25 -75 25 -75 N
+P 5 0 1 0 50 -70 70 -50 90 -90 50 -70 50 -70 F
+X B 1 -200 0 225 R 50 50 1 1 I
+X E 2 100 -200 100 U 50 50 1 1 P
+X C 3 100 200 100 D 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
 # C
 #
 DEF C C 0 10 N Y 1 F N
 ENDDRAW
 ENDDEF
 #
-# MMBT2222AL
-#
-DEF MMBT2222AL Q 0 0 Y Y 1 F N
-F0 "Q" 200 75 50 H V L CNN
-F1 "MMBT2222AL" 200 0 50 H V L CNN
-F2 "SOT-223" 200 -75 50 H V L CIN
-F3 "" 0 0 50 H V L CNN
-$FPLIST
- SOT-223*
-$ENDFPLIST
-DRAW
-C 50 0 111 0 1 10 N
-P 2 0 1 0 0 0 25 0 N
-P 2 0 1 0 100 -100 25 -25 N
-P 2 0 1 0 100 100 25 25 N
-P 3 0 1 20 25 75 25 -75 25 -75 N
-P 3 0 1 0 90 -90 70 -70 70 -70 N
-P 5 0 1 0 55 -75 75 -55 95 -95 55 -75 55 -75 F
-X B 1 -200 0 200 R 50 50 1 1 I
-X E 2 100 -200 100 U 50 50 1 1 P
-X C 3 100 200 100 D 50 50 1 1 P
-ENDDRAW
-ENDDEF
-#
 # Mounting_Hole_PAD
 #
 DEF Mounting_Hole_PAD MK 0 40 N N 1 F N

pd-buddy-sink/pd-buddy-sink.kicad_pcb

     (at 101 78 90)
     (descr "SOT-23, Standard")
     (tags SOT-23)
-    (path /588FA3A4/588FA577)
+    (path /588FA3A4/59625136)
     (attr smd)
     (fp_text reference Q1 (at 0 -2.1 270) (layer F.SilkS)
       (effects (font (size 0.65 0.65) (thickness 0.12)))
     )
-    (fp_text value MMBT2222ALT1G (at 0 2.5 90) (layer F.Fab)
+    (fp_text value MMBT3904 (at 0 2.5 90) (layer F.Fab)
       (effects (font (size 1 1) (thickness 0.15)))
     )
     (fp_text user %R (at 0 0 90) (layer F.Fab)