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.
LED Lens - Fresnel, Polycarbonate, 5mm
Colors Available:
Panel mount led lenses made of high quality polycarbonate. These lenses provide a clean semi-flush appearance with a small panel footprint and work well in any project using LED indicators. Features:
  • ¼” mounting hole
  • For panel thicknesses of 1/16” to ⅛”
  • Fresnel lens
  • Low Profile
Starting at $0.59
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
Diode - BAT41, Schottky, Small Signal
The BAT41 is a schottky diode used in many DIY projects. General purpose metal to silicon diode featuring very low turn-on voltage and fast switching. This device has integrated protection against excessive voltage such as electrostatic discharges.
$0.28
Diode - Zener, 1W, 5% Tolerance
A semiconductor device that, above a certain reverse voltage(the zener value) has a sudden rise in current. If forward biased, the diode is an ordinary rectifier. When reverse biased, it exhibits a sharp break in its current-voltage graph. Voltage across the diode remains essentially constant for any further increase of reverse current.
$0.20
Banana Jack - Johnson Cinch, For 4mm Plugs, Panel Mount
Colors Available:
High quality banana jacks with tinned brass contacts and strong nylon housings. These jacks come in a wide variety of colors and work well with any 4mm banana plug. Cinch Johnson banana jacks are used in test equipment, audio equipment, as well as modular synthesizers such as DIY Buchla, Serge, and others. Features:
  • Formed brass contacts
  • Bright tin finish
  • Durable nylon 6/6 body
  • Nickel plated nut
  • 0.010Ω maximum contact resistance
  • Keyed mounting with two flatted sides
Starting at $0.95
Diode - 1N914, Small Signal
The 1N914 is a small signal diode similar to the 1N4148 and is common in many older electronics. The 1N914 is general purpose and can be used in a multitude of different applications.
$0.15
Op-Amp - NJM4580D, Dual, Audio, DIP 8
The NJM4580D is a dual opamp popularly used in many distortion pedals.
This chip is a dual operational amplifier, specially designed for improving the tone control, which is most suitable for the audio application. Featuring noiseless, higher gain bandwidth, high output current and low distortion ratio, it is most suitable not only for acoustic electronic parts of audio pre-amp and active filter, but also for the industrial measurement tools. It is also suitable for the headphone amp at higher output current, and furthermore, it can be applied for the handy type set operational amplifier of general purpose in application of low voltage single supply type which is properly biased of the low voltage source.
Features:
  • Operating Voltage ±2V~±18V
  • Low Input Noise Voltage 0.8µVrms typ.
$0.85
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
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
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
Transistor - 2N5087, Bipolar, General Purpose, PNP
2N5087 PNP Bipolar Junction Transistor in TO-92 package. For the NPN 2N5087 see P-Q2N5088
$0.28
Integrated Circuit - Experimental Noize FXCore, DSP, Multi-Effect / Reverb
FXCore from Experimental Noize is a DSP designed for creating audio effects in pro-audio devices. FXCore can operate as a standalone device when paired with appropriate CODECs where it generates all necessary clocks or as part of a more complex system where it will lock to the word clock and bit clock provided by another part of the system.
FXCore can store up to 16 programs and their associated register preset values in its internal FLASH memory so no external program storage is required.
$19.95
Box Header - Shrouded, 10 Pin, Right Angle
High quality right angled 10-pin headers. Right angled headers are perfect for compact eurorack builds. The durable glass filled polyester shroud makes soldering these shrouded headers a simple task.
$0.65
Patch Cables - 3.5mm, Mono
Colors Available:
Low cost, high quality 3.5mm patch cables in a variety of lengths and colors. The cables are super flexible, have a great droop, and are shipped coiled so no permanent kinks are formed. With the large selection of lengths and colors, these cables are the perfect choice for any sized system.
Starting at $1.39
Integrated Circuit - DAB2140, Multi-Mode VCF, Sound Semiconductor
The Sound Semiconductor DAB2140 is a pre-soldered DIP converter for the SSI2140. This board features the SSI2140 and two decoupling caps for the V+ and V- inputs. The pinout is labelled on the board and matches the SSOP pinout. This adapter features a 20 pin DIP base with a .600 in. width. The pins are standard male headers so 2.54mm female headers are recommended for socketing the board. For the SSOP version, please see P-Q-SSI2140. A refresh of a classic design, the FatKeys™ SSI2140 preserves mojo of the beloved SSM2040 and adds temperature compensation of gm cells and the exponential control port. A "Q VCA" is provided to allow easy resonance control as well as various options for Q compensation.
$19.95
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
Switch - Carling, Mini Toggle, SPDT, 2 Position, PC Pins, Short Bat
Carling, SPDT mini toggle, 2 positions, ¼" mounting hole diameter, 0.354" bushing length.
  • 0.354" bushing length
  • 2-Position On/On
  • ¼" mounting hole diameter
  • Single pole/Double throw (SPDT)
  • PC mount pins
$2.95
On Backorder
Switch - Carling, Mini Toggle, DPDT, 2 Position, PC Pins, Short Bat
Carling mini-toggle switch, DPDT, 2 position, ¼" mounting hole diameter, 0.354" bushing length.
  • 0.354" bushing length
  • 2-Position On/On
  • ¼" mounting hole diameter
  • Double pole/Double throw (DPDT)
  • PC mount pins
$3.49
Switch - Carling, Mini Toggle, DPDT, 3 Position, Lugs, Short Bat
Carling mini-toggle switch, DPDT, 3 position, ¼" mounting hole diameter, 0.354" bushing length.
  • 0.354" bushing length
  • 3-Position
  • ¼" mounting hole diameter
  • Double pole/Double throw (DPDT)
  • Solder lugs
Starting at $3.69
LED - 5mm diameter, diffused lens, 5 mCd
Package of 5
Colors Available:
5mm (T-1 ¾) diffused LED’s. Great for use in pedal builds and other applications where a tinted and diffused indicator is needed. Multiple colors available.
  • 5mm size
  • Tinted and diffused
  • Multiple colors available
  • Package of 5
$0.70
Switch - Carling, Mini Toggle, SPDT, 2 Position, Solder Lugs, Flattened
Carling mini-toggle switch, SPDT. This switch features a flattened actuator.
  • 0.354" bushing length
  • 2-Position On/On
  • ¼" mounting hole diameter
  • Single pole/Double throw (SPDT)
  • Solder Lugs
$3.75
Switch - Carling, Mini Toggle, DPDT, 2 Position, Solder Lugs, Flatted
Carling mini-toggle switch, DPDT, ideal for phase switching, coil-tapping, series/parallel pickup switching in guitars. This switch features a flattened actuator.
  • 0.354" bushing length
  • ¼" mounting hole diameter
  • Double pole/Double throw (DPDT)
$4.95
On Backorder
Switch - Carling, Mini Toggle, SPDT, 3 Position, Solder Lugs, Short Bat
Carling, SPDT mini toggle with short actuator, 3 positions, ¼" mounting hole diameter, 0.354" bushing length.
  • 0.354" bushing length
  • 3-Position On/Off/On
  • ¼" mounting hole diameter
  • Single pole/Double throw (SPDT)
  • Solder lugs
$3.49
Optocoupler - Xvive, Vactrol, VTL5C Series
High quality vactrols from Xvive. The Xvive vactrols are clones of the original Excelitas / Perkins-Elmer vactrols used in man effects pedals, synthesizers, compressors and other equipment. These vactrols feature a thick epoxy sealed casing. The VTL5C3 and VTL5C3/2 both have a steep slope, good dynamic range, a very low temperature coefficient of resistance, and a small light history memory.
Starting at $5.50