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.
Indicator Light - Bakelite, Soviet, Incandescent, Screw Base
New-old-stock Soviet pilot lights that fit screw base bulbs. These lights have a unique bakelite frame and bakelite bezel. The lights come with a 6.3V bulb but can be used with any G-3-½ screw base bulb. The diameter of the light is 0.785” and the diameter of the mounting hole is 0.625”. Includes a bakelite mounting nut. Note: A small 0.2” notch must either be filed into the 0.625” mounting hole or filed off of the light to flush mount with a panel.
Colors Available:
$5.95
Diode - KD521V, Silicon, used in Russian Big Muff
New-old-stock Soviet silicon diodes KD521V (КД521B) in a SOD27 package. These diodes were used in EHX/Sovtek Big Muff models from Civil War to Black Russian. The KD521V is a high-speed switching diode encapsulated in hermetically sealed, leaded glass. The SOD27 packages are similar to DO-35.
$1.65
Transistor - GT309E, Germanium, USSR Saucer Case, PNP
New old stock Soviet GT309E transistors manufactured in Ukraine. The GT309E is a germanium PNP transistor in a very low profile case. The case has a 0.29” diameter and is only 0.1” thick. These have very low leakage and work well in a variety of fuzz pedal builds.
$4.95
Diode - KD522B, Silicon, used in Russian Big Muff
New-old-stock Soviet silicon diodes KD522B (КД522Б) in a SOD27 package. These diodes were used in EHX/Sovtek Big Muff models from Civil War to Black Russian. The KD522B is a high-speed switching diode encapsulated in hermetically sealed, leaded glass. The SOD27 packages are similar to DO-35.
$1.65
Indicator Light - Bakelite, Soviet, Incandescent, 9V
New-old-stock Soviet pilot lights that operate on 9V. These lights have a unique bakelite frame and metal bezel. The lights come with a 9V bulb but can be used with any voltage bulb that fits this type of socket. The diameter of the light is 12mm and the diameter of the mounting hole is 8.1mm. Includes a wavy washer and knurled nut. Note: There can be small differences in the appearance and tint of the lens and color of the bakelite. A small 0.1” notch must either be filed into the 0.625” mounting hole or filed off of the fuse to flush mount with a panel. The small bulbs can come loose during shipping and reseating the bulb is recommended before use.
Colors Available:
$5.95
Capacitor - 500V, Ceramic Disc, ± 10%
Radial ceramic capacitor.
- Voltage rating: 500VDC
- Tolerance: ± 10%
Starting at $0.25
StripBoard - Single Sided, 6.14” x 3.15”, Vintage Spacing, Black
Black stripboard featuring a 0.15” vintage spacing. This spacing is great for vintage-style builds and more easily accommodates axial capacitors and other larger sized vintage parts like resistors and transistors. The board has 40 x 20 holes (20 strips). Each strip is HASL coated making soldering easier than most protoboards and also ensures a long shelf life. Features:
Looking for projects? See our Wide Stripboard projects in our Pedal Layouts & Build Guides section for ideas.
- High-quality 1.6mm FR4 glass-epoxy circuit board
- HASL coated strips
- 40 x 20 holes (20 strips)
- 6.14” x 3.15”
Looking for projects? See our Wide Stripboard projects in our Pedal Layouts & Build Guides section for ideas.
$6.49
Transistor - 2SC828, Panasonic,TO-92 case, NPN
2SC828 NPN silicon transistors made by Panasonic. The 2SC828 is a popular NPN choice for fuzz pedals and can be found in vintage effects such as Super-Fuzz and Uni-Vibe pedals.
$3.59
Transistor - BC183L, General Purpose, TO-92 case, NPN
The BC183L is a general purpose NPN transistor in a TO-92 case. The BC183L is commonly used in fuzz pedals and has a reputation as a warm sounding silicon transistor for fuzz. The BC183L was used in some of the earliest silicon Fuzz Face pedals. The ECB pinout matches the arrangement on the P-PC-FUZZ-ISS2-BRN Iss. 2 PCB
- NPN polarity
- Collector emitter breakdown voltage 30V
- Collector base breakdown voltage 45V
- Collector current 100mA
- Power 1W
- Transition frequency 120MHz
- TO-92 case
$0.35
StripBoard - Single Sided, 6.14” x 3.15”, Vintage Spacing, Phenolic Board
Stripboard made with a phenolic substrate. Phenolic boards are found in many vintage electronics before the use of fiberglass became common. This stripboard features a 0.15” vintage spacing. This spacing is great for vintage-style builds and more easily accommodates axial capacitors and other larger sized vintage parts like resistors and transistors. The board has a 40 x 20 holes (20 strips). Each strip is surface treated making soldering easier than most protoboards and also ensures a long shelf life. Features: High-quality 1.6mm phenolic circuit board Corrosion resistant, surface treated copper strips 40 x 20 holes (20 strips) 6.14” x 3.15” Looking for projects? See our Wide Stripboard projects in our Pedal Layouts & Build Guides section for ideas.
$5.49
Nut - Dress Nut, Slotted, ⅜”-32 UNEF, for Jacks & Pots
Slotted dress nut for ⅜”-32 threaded bushing such as standard Switchcraft ¼” jacks and CTS potentiometers. These plated brass nuts add a sleek look to any amplifier, pedal or guitar. This style of nut has a similar look to slotted round nuts found on plexi Marshall amps.
$2.95
Transistor - MPSA18, Low Noise, 200mA 45V NPN
NPN low noise 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
Reverb Module - Accutronics Belton, Digi-Log, Adjustable Decay
A great digital reverb sound that easily replaces a spring reverberation unit. Stereo outputs may be summed for mono operation. Simple interface: input, output, +5V, and ground
$16.95
Transistor - 2N4123, Silicon, TO-92 case, NPN
The 2N4123 is a general purpose silicon NPN transistor in a TO-92 case. The 2N4123 is primarily intended for general purpose amplification. It is a popular choice for silicon fuzz pedals due to its low hFE specifications.
$0.45
3.5mm Jack - Qingpu, Eurorack, Stereo, PC Mount
PCB mounted 3.5mm stereo jacks commonly found in DIY Eurorack projects. These are the newest version from Qingpu Electronics featuring a square bushing plate for added durability. Hardware sold separately. See accessory items below.
Regulator - TC1044, Charge Pump DC-TO-DC Voltage Converter, 8-Pin DIP
TC1044 charge pump voltage converter in an 8 pin DIP package. The TC1044S is a pin-compatible upgrade to the Industry standard TC7660 charge pump voltage converter. It converts a +1.5V to +12V input to a corresponding –1.5V to –12V output using only two low cost capacitors, eliminating inductors and their associated cost, size and EMI. Added features include an extended supply range to 12V, and a frequency boost pin for higher operating frequency, allowing the use of smaller external capacitors. The on-board oscillator operates at a nominal frequency of 10kHz. Frequency is increased to 45kHz when pin 1 is connected to V+.
$2.90
Patch Cables - 3.5mm, Mono
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.
Colors Available:
Starting at $1.39
CMOS - CD4081, Quad 2-Input AND Gates, 14-Pin DIP
CD4081B AND gates, provide the system designer with direct implementation of the AND function and supplement the existing family of CMOS gates. Features:
- Medium-Speed Operation - tPLH, tPHL = 60 ns (typ.) at VDD = 10 V
- 100% tested for quiescent current at 20 V
- Maximum input current of 1 µA at 18 V over full package-temperature range: 100 nA at 18 V and 25°C
- Noise margin (full package-temperature range) =
- 1 V at VDD = 5 V
- 2 V at VDD = 10 V
- 2.5 V at VDD = 15 V
- Standardized, symmetrical output characteristics
- 5-V, 10-V, and 15-V parametric ratings
- Meets all requirements of JEDEC Tentative Standard No. 13B, "Standard Specifications for Description of 'B' Series CMOS Devices"
$1.26
Trimmer - Bourns, 3362P, Single Turn, Top Adjust, PCB Mount
High-quality Bourns 3362P trimpots. These single-turn cermet trimmers can be found in countless guitar pedals and synthesizer modules. Sealed trimmers are built with an o-ring seal to prevent entrance of moisture and serve as a mechanical restraint to prevent unwanted wiper movement. ±10% tolerance.
Starting at $1.25
Reverb Module - Accutronics Belton, Digi-Log, horizontal mount
A great digital reverb sound that easily replaces a spring reverberation unit. Simple interface requires only input, output, +5V, and ground. Output requires no external capacitors.
Starting at $12.95
Transistor - 2N1711, Silicon, TO-39 case, NPN
The 2N1711 is a silicon planar epitaxial NPN transistor in a TO-39 metal case. It is intended for use in high performance amplifiers, oscillators and switching circuits. The 2N1711 is a great choice for amplifiers where low noise is an important factor.
$1.00
Op-Amp - TL062, Dual, Low-Power, JFET Input, 8-Pin DIP
Dual low power opamps in an 8-pin DIP package. The TL062 offers a high input impedance and 1MHz bandwidth.
$0.33
Knob - Davies, 1700, Daka-ware, Pinched
High-quality USA made knobs from Davies Molding. The Davies 1700 is made of solid phenolic and has a classic style that fits nicely on any piece of equipment. The 1700 can be found on vintage radios and amplifiers, most notably the Filmosound projector amps that are popularly converted to guitar amplifiers.
- Height: 0.59 in.
- Diameter: 0.75 in.
- Fits ¼" shaft with set screw
$3.55
Knob - Aluminum, Set Screw, Short Line, 0.495" Diameter
Anodized aluminum knob with short indicator line and set screw. This slim, solid aluminum knob has a straight knurled grip with a diameter of 0.495”. It also features a counterbore which allows it to hide pot bushings for a clean look. Fits ¼” (6.35mm) pot shafts.
Colors Available:
$1.85