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.
Switch - Carling, Mini Toggle, SPDT, 2 Position, Solder Lugs
Carling, SPDT mini toggle, 2 positions, ¼" mounting hole diameter, 0.354" bushing length.
$3.69
Washer - CTS, Flat, for Potentiometers
Flat washer for 3/8" bushing. Perfect fit for CTS potentiometers. Package of 10.
$1.25
package of 10
Potentiometer - Alpha, Linear, 9mm, Vertical
Linear taper, vertical mount, 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.
$1.90
IC Socket - Dual in-line package, 2.54mm Pitch, 7.62mm Spacing
IC component sockets for dual in-line package chips (DIP, PDIP, DIL, DIPP.) These sockets feature ladder style cases with tinned stamped and formed connections.
Starting at $0.35
Op-Amp - TL072, Dual, Low-Noise, JFET Input, 8-Pin DIP
The TL072 is a high speed JFET input dual operational amplifier incorporating well matched, high voltage JFET and bipolar transistors in a monolithic integrated circuit. The device features high slew rates, low input bias and offset current, and low offset voltage temperature coefficient.
$0.70
Power Jack - Lumberg, DC Panel Mount, 5.5mm External, 2.1mm Internal
Lumberg panel mount barrel jack with solder lugs.This DC jack features a normally closed switch on the ring (sleeve) connection. For use with barrel plugs with a 5.5mm external diameter and 2.1mm internal diameter. Mounting nut included.
$1.59
Potentiometer - Song Huei, Linear, 9mm, Tall
Linear taper, vertical mount, Song Huei pots with a 6mm shaft. These 9mm pots are popular in DIY guitar pedals, modular synthesizers, and other projects where space is limited. The knurled shaft features a painted indicator line so no knob is required. These tall versions have a 17mm shaft length and a total height of 25mm. For audio taper versions, see R-VSHL-AX. For center notched linear taper versions, see R-VSHL-BX-CN.
$0.95
Knob - Davies, 1910 and 1913, Daka-ware, Skirted
High-quality USA made knobs from Davies Molding. The skirted 1900 series knobs are made of solid phenolic and feature an indicator line on the skirt. These classic knobs have been used on a variety of equipment throughout the decades and are still popularly used on synthesizers today. The smaller 1910 knob was used on many early Serge paperface panels. Davies 1910 (Small)
  • Height: 0.50 in.
  • Diameter: 0.75 in.
  • Fits ¼" shaft with set screw

Davies 1913 (Large)
  • Height: 0.625 in.
  • Diameter: 1.13 in.
  • Fits ¼" shaft with set screw
$2.75
Capacitor - 500V, Ceramic Disc, ± 10%
Radial ceramic capacitor.
  • Voltage rating: 500VDC
  • Tolerance: ± 10%
Starting at $0.25
Capacitor - 100V, Polyester Film Inductive
Polyester film dielectric, aluminum foil electrode, copperply leads and epoxy resin coating in inductive type.
  • Small size, light weight and low cost
  • Dissipation factor is small because the leads are directly welded to electrodes
  • Epoxy resin vacuum-dipped enhances the mechanical strength, humidity resistance
  • 100 volt rating
  • Operating temperature range: -40°C to +85°C.
  • Package of 5
Starting at $0.40
package of 5
Diode - standard recovery rectifier, 3A, 1000V, 1N5408
1N5408 Diode. Lead mounted standard recovery rectifiers are designed for use in power supplies and other applications having need of a device with the following features:
  • High Current to Small Size
  • High Surge Current Capability
  • Low Forward Voltage Drop
$0.43
Knob - Aluminum, Notched Tip Indicator, Set Screw, .75" Diameter
Colors Available:
¾" dia. Knurled aluminum knob, 'positive grip', notched tip indicator, fits ¼" shaft. With set screw. Multiple color options available.
$2.99
Heat Shrink - 2:1, Thin Wall Tubing, Polyolefin, Black
Thin wall heat shrink tubing available in multiple diameters. The flexible yet durable polyolefin material and standard 2:1 shrink ratio make this heat shrink a great option for electrical insulation, cable bundling, and component protection.
  • Operating Temperature: -55°C to +135°C
  • Minimum Shrink Temperature: 70°C
  • Full Recovery Temperature: 100°C
  • UL Approval
  • RoHS Compliant
Starting at $0.35
Sold by the foot
Diode - 1N34A Germanium
The 1N34A Germanium diode is an old standby in electronics. Widely used for detecting the rectifying efficiency or for switching on a radio, TV or stereo etc.
$1.95
Potentiometer - Alpha, Audio, 9mm, Vertical
Audio taper (log), vertical mount, 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.
$1.90
Switch - Carling, Mini Toggle, DPDT, 2 Position, Solder Lugs
Carling mini-toggle switch, DPDT, ideal for phase switching, coil-tapping, series/parallel pickup switching in guitars.
  • 0.354" bushing length
  • ¼" mounting hole diameter
  • Double pole/Double throw (DPDT)
  • On-On
$3.85
Nut - Knurled, for mounting Qingpu 3.5mm jacks
Knurled, slotted nut for W-QP-419GR and W-QP-518MA 3.5mm jacks. See W-QP-NUT-H for the hex version of this nut. See W-QP-WASHER for compatible washer See S-TND-2X for nut driver tool
$0.15
¼" Jack - Stereo, Panel Mount, Low Profile
Panel mount stereo jacks with a very low profile. These jacks have a smaller footprint than the Lumberg jacks that are popular for tight pedal builds. They are perfect for top mounted jack pedal builds and any other project where space is limited. Mounting nut and flat washer included.
  • M9*0.75 Bushing Thread
  • Stereo 3-Conductor (TRS)
  • Open Circuit (does not have switched terminal).
  • Includes nut and washer.
$0.99
Knob - Plastic, Set Screw, Vertical Pointer, 0.51" Diameter
Colors Available:
Small plastic control knob with set screw and brass insert. This knob features a radial-brushed metal top, a fine straight-knurl grip, and a vertical pointer. Fits ¼” (6.35mm) pot shafts.
$0.95
Transistor - 2N5088, Bipolar, General Purpose
2N5088 NPN Bipolar Junction Transistor in TO-92 package
$0.20
Transistor - BC108, TO-18 case, NPN
BC108 NPN silicon transistors. The BC108 is a popular NPN choice for fuzz pedals and other effects such as vintage silicon Fuzz Face builds and Big Muff clones. Type hFE (IC=2mA, VCE=5V) hfe (IC=2mA, VCE=5V, f=1KHz) BC108A 110-220 125-260 BC108B 200-450 240-500 BC108C 420-800 450-900
  • 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
$1.19
Diode - 1N5817, Schottky, High Switching Speed
Schottky diode with low forward voltage drop and high switching speeds.
$0.20
Capacitor - 50V, Radial Lead, Electrolytic
High quality, radial leaded, aluminum electrolytic capacitors rated at 50VDC.
$0.60
package of 5
Switch - GØRVA, Mini Toggle, SPDT, 2 Position, Solder Lugs, Medium Bat
Premium two position SPDT mini toggle switches from Gorva Design. The Bascular Mini switches have a medium 7.5mm actuator length. These switches feature silver plated copper contacts. RoHS compliant & lead-free. Mounting hardware included. Details
  • 8.89 mm bushing length
  • Medium bat
  • 2-Position On/On
  • ¼" mounting hole diameter
  • Single pole/Double throw (SPDT)
  • Solder lugs

Features:
  • Power Rating: DC9V, 1A
  • Contact Resistance: <10mΩ
  • Insulation Resistance: 1000MΩ Minimum
  • Dielectric Strength: 1000V RMS @ Sea Level
  • Operating Temperature: -40°C ~ +85°C
  • Electrical Life: 40,000 Cycles
  • RoHS & Lead-free
$1.69