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.
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-MSTACT Switch - Korg, Momentary Tactile Switch, Under Knob P8012S
Korg Tact switch under knob P8012S. SPST momentary, 0.25in. width.
$4.25
P-H542X Switch - Carling, Mini Toggle, DPDT, 3 Position
Genuine Carling DPDT 3 Position Mini Toggle, Round Bat, Solder Lugs
  • DPDT ( Double Pole/ Double Throw) switch
  • 0.354" bushing length
  • 0.409” bat length
  • ¼" chassis hole diameter
  • Solder terminals
Starting at $3.10
R-VPC01 Photocell - Morley, for Effects Pedals
Photocell for Morley effects pedals. Great replacement for LDR1, LDR2 and LDR3 (M79-211564-000) in Morley Pro Series Volume PVO. Sold individually.
A photocell may also be referred to as a photoresistor, LDR, or light dependant resistor.
$2.50
R-VAR-BX Potentiometer - Alpha, Linear, 9mm, Right Angle
Linear taper, right angle, Alpha pots with a 6.35mm shaft diameter. These 9mm pots are popular in DIY guitar pedals, synthesizers, and other projects. Mounting nut and washer included.
$1.85
R-VAMA-SS-PC Potentiometer - Alpha, Audio, Solid Shaft, PC Lead, 16mm
Alpha Mini Pots with solid shaft and short PC mount terminals.
  • Threading: M7 x 0.75
  • Distance between terminals: 5 mm (0.197”)
  • Lead Depth from Panel: 3.8 mm (0.150”)
  • Lead Distance from shaft center: 12.5 mm + 3.5 mm (0.492” + 0.138”)
  • Lead Thickness: 0.5 mm (0.020”)
$1.10
P-H5412 Switch - Carling, Mini Toggle, SPDT, 3 Position, Solder Lug
Carling mini-toggle switch, SPDT, Solder Lug, 3-Position, On/Off/On
$3.89
P-Q-SSI2162 Integrated Circuit - SSI2162, Dual VCA, Sound Semiconductor
The FatKeys™ SSI2162 provides two independent VCA channels, and like its SSI2161 and SSI2164 siblings offers great flexibility in design of dynamics processors, automatic or remote level control, and voltage controlled filters. Highly compact 10-lead SSOP package. The SSI2162 is a versatile VCA building block for high-performance audio applications. Two independent channels provide voltage control of a current-mode input and output for a gain range from +20dB to –100dB, with control provided by a ground-referenced –33mV/dB constant. The device offers considerable flexibility for a wide range of design goals and applications. A unique mode control allows selection of Class A, Class AB, or in-between using a single resistor. In addition, improved current handling allows use of lower value input resistors for reduced output noise without loss of headroom. Both channels can be parallel-connected for further noise improvement.
$5.45
C-D680-50 Capacitor - 50V, 680pF, Ceramic Disc
Ceramic disc capacitor, 680 pF (.00068µF) rated for up to 50 V.
Non linear temperature coefficient of capacitance
$0.55
S-HS-SKT-X Screws - M3-0.5 Socket Head Cap, 8mm Length
Package of 5
Colors Available:
Ideal for precision assembly work with close tolerances and applications needing a well tooled appearance.
Starting at $0.75
P-K801-BRASS-X Knob - Scalloped Edge, Indicator Line, Set Screw, Brass Insert
Colors Available:
The P-K801-BRASS is a custom built Davies 1900H clone. This knob features a brass insert in addition to a thick plastic build resulting in the most solid version of this knob available. The thick plastic eliminates the unfortunate hairline fractures that can commonly be found near the set screw of other versions. The P-K801-BRASS has an infilled painted indicator and fits ¼” (6.35mm) pot shafts.
$0.95
P-Q1N5404 Diode - Silicon Rectifier, 3A, 400V, 1N5404
A semiconductor device which passes current in the forward direction(from anode to cathode), and blocks current in the opposite direction.
$0.35
R-C Resistors - ¼ Watt, Carbon Film, 5% tolerance
Package of 5
Carbon Film resistors are made by vacuum depositing a thin carbon film on a ceramic form. A good choice for applications which require a steady, low power drop. Package of 5. These resistors are perfect for pedal builders!
  • 1/4 watt
  • ± 5% tolerance
  • EIA color coded
  • .24" long x .08" diameter
  • Package of 5
$1.72
S-H750-X Power Jack - DC Panel Mount, 5.5mm External, 2.1mm Internal
Colors Available:
½" panel mount with solder lugs. Round plastic with normally closed switch. For barrel plugs with a 5.5mm external diameter and 2.1mm internal diameter.
$0.95
R-VAR-C25K Potentiometer - Alpha, Reverse Audio, 9mm, Right Angle, 25KΩ
Reverse audio taper (antilog), right angle, Alpha pots with a 6.35mm shaft diameter. These 9mm pots are poplar in DIY guitar pedals, synthesizers, and other projects. Mounting nut and washer included.
$1.85
C-PFD1-50-R Capacitor - 50 V, 0.1 µF, Polyester
Polyester Film Capacitor used in MOD® Pedal Kits. Rated at 0.1µF 50V. Tolerance: 10%. Operating temperature: -40 C to +85 C
$1.05
R-VAML-SS-PC Potentiometer - Alpha, Linear, Solid Shaft, PC Lead, 16mm
Alpha Mini Pots with solid shaft and short PC mount terminals.
  • Threading: M7 x 0.75
  • Distance between terminals: 5 mm (0.197”)
  • Lead Depth from Panel: 3.8 mm (0.150”)
  • Lead Distance from shaft center: 12.5 mm + 3.5 mm (0.492” + 0.138”)
  • Lead Thickness: 0.5 mm (0.020”)
$1.10
P-H5411 Switch - Carling, Mini Toggle, SPDT, 2 Position, Solder Lugs, Short Bat
Carling, SPDT mini toggle, 2 positions, ¼" mounting hole diameter, 0.354" bushing length.
$2.79
On Backorder
P-L700-X LED - 5mm, Water Clear, High Brightness, Package of 5
Package of 5
Colors Available:
High brightness 5mm LED. Great for use in pedal and amp builds as well as other applications where a bold, bright, indicator is needed. Multiple colors available.
  • 5mm size
  • Water clear
  • High brightness
  • Multiple colors available
  • Package of 5
Starting at $1.30
W-SC-112AX ¼" Jack - Switchcraft, Enclosed, Mono, Shunt Tip
The Switchcraft Type 112A enclosed ¼” jack is a high quality jack featuring a switched tip. This jack has three solder lugs. One for the tip, one for the sleeve, and one for the switch which connects to the tip when no plug is inserted. These jacks have been widely used across the industry and can also be found in many popular 5U synthesizers. Includes nut and washer
  • Type 112AX
  • 0.276" bushing length (standard)
  • Mates with standard ¼" plugs and is available with 0.25" inside diameter bushing.
  • Mono 2-Conductor
  • Includes nut and washer
  • Tip is shunt
$2.39
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-T-LEHLE-MZ-L Transformer - Lehle, Audio, Line-Bridging, Unbalanced to Balanced
The LEHLE TRANSFORMER MZ is the ideal component to avoid hum loops without degrading the sound. It achieves this through galvanic isolation of low to mid impedance audio signal sources. It can be used as an input or output transformer, for balanced or unbalanced signals.
$45.95
P-Q4558 Op-Amp - 4558, Dual high-gain, 8-Pin DIP
Dual Operational Amplifier. The 4558 integrated circuit is a dual high-gain operational amplifier internally compensated and constructed on a single silicon chip using an advanced epitaxial process. Combining the features of the NJM741 with the close parameter matching and tracking of a dual device on a monolithic chip results in unique performance characteristics. Excellent channel separation allows the use of the dual device in single NJM741 operational amplifier applications providing density. It is especially well suited for applications in differential-in, differential-out as well as in potentiometric amplifiers and where gain and phase matched channels are mandatory. Features:
  • Operating Voltage (±4V~±18V)
  • High Voltage Gain (100dB typ.)
  • High Input Resistance (5MΩ typ.)
  • Bipolar Technology
$0.75
S-M12-1048 Heat Shrink - ¼" Diameter x 6" Long, 23 Pieces
Package of 23
The shrink ratio on this tubing is 2 to 1, it is fungus resistant and non-corrosive. It is recommended for tightly sealing connectors, terminals, wire splices, and tool handles. It may be shrunk with heat guns, oven, etc. Comes in 6 inch lengths, quantity of 23.
$6.95
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