Synth & Eurorack Parts / DIY

Our Synth & Eurorack Parts / DIY category is a curated list of items that are commonly found in synth/eurorack projects. The items and filters here do not represent our full lineup of parts. If you don't see what you are looking for, check out our main categories or send us a suggestion and we'll look into adding it.

Transistors

P-QBC108C Transistor - BC108C, TO-18 case, NPN
BC108C NPN silicon transistors. The BC108C is a popular NPN choice for fuzz pedals and other effects such as vintage silicon Fuzz Face builds and Big Muff clones.
  • NPN polarity
  • Collector emitter breakdown voltage 25V
  • Collector base breakdown voltage 30V
  • Collector current 200mA
  • Power 0.75W
  • Transition frequency 150MHz
  • TO-18 case
  • Weight 0.35g
$0.95
P-QBC109C Transistor - BC109C, TO-18 case, NPN
BC109C NPN silicon transistors. The BC109C is a popular NPN choice for fuzz pedals and other effects such as vintage silicon Fuzz Face builds and Big Muff clones.
$0.95
P-QAC127 Transistor - AC127, Germanium, TO-1 case, NPN
AC127 NPN germanium transistors. The AC127 is a popular NPN for fuzz pedals and other effects. The NPN polarity allows for use with standard pedal power supplies.
$2.95
P-QJ113 Transistor - J113, JFET, N-Channel,TO-92
J113 N-Channel Switch (TO-92 package) - designed for low level analog switching, sample and hold circuits and chopper stabilized amplifiers.
  • Max drain to gate voltage = 35 V
  • Max gate to source voltage = -35 V
  • Max forward gate current = 50 mA
$0.49
P-QMPSA18 Transistor - MPSA18, Darlington 200mA 45V NPN
NPN Darlington transistor (TO-92 package) - designed for high gain, low noise general purpose amplifier applications.
  • Max collector to emitter voltage = 45 V
  • Max collector to base voltage = 45 V
  • Max emitter to base voltage = 6.5 V
  • Max collector current = 0.2 A (continuous)
$0.15
P-STR-004 Transistor Socket - Mill Max, 3 Pin, Machine Pin, Through Hole
High quality TO package transistor sockets by Mill-Max. These machine pin sockets make swapping transistors in pedals and other projects a simple process. These use a standard TO footprint so they are ready for use on PCBs with matching footprints.
$1.95
P-Q2N7000 Transistor - 2N7000, Mosfet, Small Signal
2N7000 N-channel enhancement mode field effect transistors. 2N7000 MOSFETs are used in many DIY projects such as boost and distortion effects pedals.
Features:
  • Voltage Controlled Small Signal Switch
  • High Saturation Current Capability
  • Rugged and Reliable
  • High Density Cell Design for Low RDS(ON)
$0.45
P-Q2N5087 Transistor - 2N5087, Bipolar, General Purpose, PNP
2N5087 PNP Bipolar Junction Transistor in TO-92 package. For the NPN 2N5087 see P-Q2N5088
$0.28
P-Q2N6027-A Transistor - 2N6027 Programmable Unijunction
2N6027 programmable unijunction transistor often referred to as a PUT. The 2n6027 can be found in many tremolo effects pedal projects.
$1.45
P-Q2N3906 Transistor - 2N3906, TO-92 case, PNP
General purpose low-power PNP bipolar junction transistor, used frequently in hobbyist electronic projects. For the NPN 2N3904 see P-Q2N3904
$0.28
P-QJ201 Transistor - JFET, N-Channel, MMBFJ201, SOT-23
Surface mount MMBFJ201 JFET. Commonly used in place of the discontinued through-hole J201. These JFETs can be found in many effects pedals, synthesizers, and other projects. The MMBFJ201 is an N-Channel general purpose amplifier JFET. This device is designed primarily for low level audio and general purpose applications with high impedance signal sources.
$0.45
P-QPF5102 Transistor - JFET N-Ch Transistor Lo Freq / Lo Noise, PF5102
PF5102 N-Channel Switch (TO-92 package) - designed for low level analog switching, sample and hold circuits and chopper stabilized amplifiers.
  • Max drain to gate voltage = 40 V
  • Max gate to source voltage = -40 V
  • Max forward gate current = 50 m
$1.55
P-Q2N3904 Transistor - 2N3904, TO-92 case, NPN
General purpose low-power NPN bipolar junction transistor, used frequently in hobbyist electronic projects.
$0.18
P-QBC550 Transistor - BC550 B, TO-92 case, NPN
Low noise transistor for audio frequency amplifier applications.
$0.19
P-Q2N3906-LF Transistor - 2N3906, TO-92 case, PNP, Lead Free
General purpose low-power PNP bipolar junction transistor, used frequently in hobbyist electronic projects. This version is lead free.
For a lead free 2N3904 see P-Q2N3904-LF.
$0.45
P-STTR-15 Machine Pin Socket - Preci-Dip, Break Away, 1 Row, 15 Position
High quality single row machine pin sockets made by Preci-Dip. These sockets are the break-away type and can easily snap into smaller sizes such as 5 separate transistor sockets.
$1.29
P-QMPSA13 Transistor - MPSA13, Darlington 500mA 30V NPN
NPN Darlington transistor (TO-92 package) - designed for applications requiring extremely high current gain at collector currents to 1.0A.
  • Max collector to emitter voltage = 30 V
  • Max collector to base voltage = 30 V
  • Max emitter to base voltage = 10 V
  • Max collector current = 1.2 A (continuous)
$0.49
P-Q2N5088 Transistor - 2N5088, Bipolar, General Purpose
2N5088 NPN Bipolar Junction Transistor in TO-92 package
$0.20
P-Q2N5089 Transistor - 2N5089, TO-92 case, NPN
General purpose low level, low noise amplifier. Silicon NPN transistor.
$0.39
P-STR-003 Transistor Socket - Cinch, 3 Pin, Phenolic, NOS
New-old-stock transistor sockets made by Cinch. These three pin phenolic sockets offer a more secure hold than the standard machine-pin transistor sockets of today. They can fit a variety of different transistor package sizes. The flat solder lugs can work in point to point builds or in PCBs with appropriate footprints.
$0.75
P-Q2N3904-LF Transistor - 2N3904, TO-92 case, NPN, Lead Free
General purpose low-power NPN bipolar junction transistor, used frequently in hobbyist electronic projects. This version is lead free.
For a lead free 2N3906 see P-Q2N3906-LF.
$0.35
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