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-PC-BB400 BreadBoard - Solderless, 400 point pattern
Solderless (plug-in) breadboard with 400 connection tie-points (i.e. 400 wire insertion holes) and 4 power rails. Solderless breadboards are great for building and testing new circuits because parts can be easily inserted and removed making them completely re-usable. This breadboard has a 300 tie-point IC-circuit area plus four 25 tie-point power rails. The housing is made of white ABS plastic, with a printed legend giving numbers and letters for columns and rows. The internal contacts are phosphor bronze with a plated nickel finish and a peelable adhesive tape backing is provided for attaching it to a surface. Be sure to check out the Zipwire™ jumper wire kits for use with this breadboard.
$4.75
P-PC-PAD1 PadBoard - Double Sided, Plated Holes, 3.15” x 1.97”
Prototyping circuit board that has a general purpose pad-per-hole pattern making it great for general purpose analog and digital use. It is a double-sided board with plated holes, which allows components to be easily soldered to either side of the board. A square pad is provided every 5th hole, which makes it easy to align components on the top and bottom of the board. An anti-tarnish coating protects the copper for a long shelf-life and provides easy soldering.
For fastening your project to a surface see our adhesive standoffs (S-H190-X)
Features:
  • Pad-per-hole prototyping board with plated-thru holes. A square pad every 5th hole makes it easy to align components on top and bottom.
  • Double-sided high-quality FR4 glass-epoxy circuit board with plated holes. Components can be soldered to either side.
  • 1oz/ft2 copper with an anti-tarnish coating for easy soldering.
  • 31 x 19 holes, 0.037" holes are drilled on 0.1" (2.54mm) centers. Four 0.125” mounting holes.
  • Size 1 = 1.97 x 3.15in (50 x 80mm), 1/16" thick (1.6mm)
$2.95
P-PC-PAD2 PadBoard - Double Sided, Plated Holes, 3.94” x 3.15”, Mounting Holes
The PadBoard-2 prototyping circuit board has a general purpose pad-per-hole pattern which is good for analog and digital use. It is a double-sided board with plated holes, which allows components to be soldered to either side of the board. A square pad is provided every 5th hole, which makes it easy to align components on the top and bottom of the board. Features
  • Pad-per-hole prototyping board with plated-thru holes. A square pad every 5th hole makes it easy to align components on top and bottom.
  • Double-sided high-quality FR4 glass-epoxy circuit board with plated holes. Components can be soldered to either side.
  • 1oz/ft2 copper with an anti-tarnish coating for easy soldering. Lead free and RoHS compatible.
  • 31 x 39 holes, 0.037" holes are drilled on 0.1" (2.54mm) centers. Four 0.125” mounting holes.
  • Size2 = 100 x 80mm (3.94 x 3.15in), 1/16" thick (1.6mm)
$6.85
P-PC-PAD3U PadBoard - Double Sided, Plated Holes, 6.30” x 3.94”, Mounting Holes
The PadBoard-3U prototyping circuit board has a general purpose pad-per-hole pattern which is good for general purpose analog and digital use. It is a double-sided board with plated holes, which allows components to be soldered to either side of the board. A square pad is provided every 5th hole, which makes it easy to align components on the top and bottom of the board. The PCB accepts a 96 pin DIN-41612 VME connector for backplane or board-to-board applications. Holes for ejector latches are provided. Features
  • Pad-per-hole prototyping board with plated-thru holes. A square pad every 5th hole makes it easy to align components on top and bottom.
  • Double-sided high-quality FR4 glass-epoxy circuit board with plated holes. Components can be soldered to either side.
  • 1oz/ft2 copper with an anti-tarnish coating for easy soldering.
$12.95
P-PC-PR1590B ProtoBoard - Fits 1590B, 1 sided, 2-hole strips
Prototyping circuit board (PCB) designed to fit the Hammond 1590B die-cast aluminum enclosure. It has a convenient 2-hole pattern, which provides an easy way to connect parts while maximizing usable board area. It can be used as a stand-alone prototyping board, or installed in a Hammond 1590B enclosure. For fastening your project to a surface see our adhesive standoffs (S-H190-X) Features:
  • Single-sided high-quality FR4 glass-epoxy circuit board.
  • Convenient 2-hole pattern provides an easy way to connect parts.
  • 1oz/ft2 copper with an anti-tarnish coating for easy soldering. Lead free and RoHS compatible.
  • 0.042" holes are drilled on 0.1" (2.54mm) centers. 2 mounting holes.
  • PCB Size 2.05 x 4.05 in (52.1 x 102.9 mm)
$3.40
P-PC-PR1590BB ProtoBoard - Fits 1590BB, 1 sided, 2-hole strips
Prototyping circuit board (PCB) designed to fit the Hammond 1590BB die-cast aluminum enclosure. It has a convenient 2-hole pattern, which provides an easy way to connect parts while maximizing usable board area. It can be used as a stand-alone prototyping board, or installed in a Hammond 1590BB enclosure. For fastening your project to a surface see our adhesive standoffs (S-H190-X). Features:
  • Single-sided high-quality FR4 glass-epoxy circuit board.
  • Convenient 2-hole pattern provides an easy way to connect parts.
  • 1oz/ft2 copper with an anti-tarnish coating for easy soldering.
  • 0.042" holes are drilled on 0.1" (2.54mm) centers. 4 mounting holes.
  • PCB Size 3.20 x 4.25 in (81.3 x 108.0 mm)
$5.50
P-PC-SB400 Breadboard - Solderable PCB, 3.00” x 1.90”
The SB400 Solderable PCB BreadBoard enables you to transfer your circuit and wires from a plug-in breadboard without recutting wires or changing your layout. The SB400 has the same pattern and spacing as a standard 400 connection point BB400 solderless plug-in breadboard. It has a standard 5-hole strip for each IC pin, just like solderless breadboards plus 4 power rails. However, it has the advantage that soldered joints provide a more reliable long-term connection than solderless contacts. The SB400 has four power rails like solderless breadboards, plus two bonus rails for power or signals. There are bonus two-hole pads along the centerline allowing DIL (dual in-line) headers to be used. BPS prototyping boards use high-quality FR4 glass epoxy PCBs for long life, with an anti-tarnish protective coating for easy soldering.
$4.15
P-PC-SB404 Breadboard - Solderable PCB, 3.75” x 1.85”, Mounting Holes
Solderable PC BreadBoard enables you to transfer your circuit and wires from a plug-in breadboard without recutting wires or changing your layout. This breadboard has the same pattern as a standard 400 connection point solderless plug-in breadboard which has a standard 5-hole strip for each IC pin, just like solderless breadboards. However, it has the advantage that soldered joints provide a more reliable long-term connection than solderless contacts. The board has four power rails like solderless breadboards, plus two bonus rails for power or signals. There are bonus two-hole pads along the centerline allowing DIL (dual in-line) headers to be used as well as a top side silkscreen to position components. Four mounting holes allow your projects to be secured.
$4.50
P-PC-ST1 StripBoard - Single Sided, 3.15” x 1.97”, Mounting Holes
Prototyping circuit board with a standard long strip pattern where tracks run the length of the board. The long tracks are convenient for power and ground rails, and for signal buses. Strips can be cut as needed to make smaller tracks and circuit pads and the board has 0.1" hole spacing for DIP integrated circuits/ headers as well as other parts. Higher quality than traditional stripboard, the holes are drilled, not punched.
$2.95
P-PC-ST2 StripBoard - Single Sided, 3.94” x 3.15”, Mounting Holes
ST2 StripBoard is a prototyping circuit board with a standard long strip pattern. Tracks run the length of the board. The long tracks are convenient for power and ground rails, and for signal buses. Strips can be cut as needed to make smaller tracks and circuit pads. It has 0.1" hole spacing for DIP integrated circuits and headers and other parts. ST2 has higher quality than traditional stripboard. The holes are drilled, not punched. The base material is high-quality FR4 glass epoxy board. It has better stability and moisture resistance than boards using phenolic or SRBP (synthetic resin bonded paper), which can warp with exposure to humidity. Features
  • Standard stripboard pattern, with tracks running the length of the board.
  • Single-sided high-quality FR4 glass-epoxy circuit board.
  • 1oz/ft2 copper with an anti-tarnish coating for easy soldering.
$4.55
P-PC-ST3U StripBoard - Single Sided, 6.30” x 3.94”
ST3U StripBoard is a prototyping circuit board with a standard long strip pattern. Tracks run the length of the board. The long tracks are convenient for power and ground rails, and for signal buses. Strips can be cut as needed to make smaller tracks and circuit pads. It has 0.1" hole spacing for DIP integrated circuits and headers and other parts. It has higher quality than traditional stripboard. The holes are drilled, not punched. The base material is high-quality FR4 glass epoxy board. It has better stability and moisture resistance than boards using phenolic or SRBP (synthetic resin bonded paper), which can warp with exposure to humidity. Features
  • Standard stripboard pattern, with tracks running the length of the board.
  • Single-sided high-quality FR4 glass-epoxy circuit board.
  • 1oz/ft2 copper with an anti-tarnish coating for easy soldering.
$8.35
P-Q-SSI2130 Integrated Circuit - SSI2130, VCO, Sound Semiconductor
The FatKeys™ SSI2130 Voltage Controlled Oscillator provides beautiful triangle, sawtooth, pulse, and square waveforms with unprecedented temperature stability; and adds an on-chip mixer, low distortion sine wave generator, through-zero FM/PM capability and more in an ultra-compact PCB footprint.
$8.95
P-Q-SSI2131 Integrated Circuit - SSI2131, VCO, Sound Semiconductor
The FatKeys™ SSI2131 Voltage Controlled Oscillator provides the core VCO function with buffered triangle, sawtooth, and variable-width pulse waveform outputs over a ten-octave range. The device offers unparalleled temperature stability, exponentiality, waveform integrity, and ease of use while requiring an absolute minimum of external components. The SSI2131 is a new-generation voltage controlled oscillator for high-performance electronic musical instruments and other systems requiring accurate audio-band waveform generation. The device offers unprecedented levels of temperature stability, exponentiality, waveform integrity, and ease of use.
$7.50
P-Q-SSI2140 Integrated Circuit - SSI2140, Multi-Mode VCF, Sound Semiconductor
The SSI2140 is a new-generation voltage controlled filter that provides four highly-configurable variable transconductance cells for a wide variety of pole and mode combinations, and adds significant new features.
$6.50
P-Q-SSI2144 Integrated Circuit - SSI2144, Ladder VCF, Sound Semiconductor
The second of two legendary SSM filter updates, the FatKeys™ SSI2144 is a dedicated four-pole low-pass ladder filter with on-chip resonance control. Original designer Dave Rossum did a number of performance updates such as lower noise, improved control feedthrough, and logical pin grouping but otherwise left this sweet-sounding VCF alone. The SSI2144 reprises the SSM2044 of legacy chipmaker Solid State Micro Technology, which many believe to be the best-sounding analog synthesis filter IC ever produced. Based on Dave Rossum’s patented classic improved ladder topology, the SSI2144 allows rich tonal characteristics that showcase the very best attributes of subtractive synthesis. The SSI2144 uses the same internal circuit as the SSM2044 but incorporates improvements by the original designer and takes advantage of modern process technology.
$6.50
P-Q-SSI2161 Integrated Circuit - SSI2161, Single VCA, Sound Semiconductor
A very high performance single-channel VCA for the most demanding applications, the ProCircuit™ SSI2161 offers industry-leading lowest-noise, and a mode control to optimize noise vs. distortion performance. All at low-cost and in a 10-lead SSOP package. The SSI2161 is a versatile VCA building block for high-performance audio applications. A single channel provides voltage control of current-mode inputs and outputs 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.
$5.45
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
P-Q-SSI2164 Integrated Circuit - SSI2164, Quad VCA, Sound Semiconductor
The FatKeys™ SSI2164 is perhaps the most flexible VCA available, with four independent channels for lowest cost-per-VCA. The user-selectable mode control allows Class A, AB, or intermediate biasing, and current inputs and outputs provide great design freedom. Ideal for voltage-controlled filters. The SSI2164 is a versatile VCA building block for high-performance audio applications. Four independent channels provide voltage control of current-mode inputs and outputs for a gain range from +20dB to –100dB, with control provided by a ground-referenced –33mV/dB constant. The SSI2164 will directly retrofit existing SSM/V2164 positions while offering improvements that include significantly lower overall distortion, on-chip protection against asymmetrical power failure, and a substantial increase of input current handling. The device offers considerable flexibility for a wide range of design goals and applications.
$6.95
P-Q-SSIDAB2130 Integrated Circuit - DAB2130, VCO, Sound Semiconductor
The Sound Semiconductor DAB2130 is a pre-soldered DIP converter for the SSI2130. This board features the SSI2130 and two decoupling caps for the V+ and V- inputs. The pinout is labelled on the board and matches the QFN pinout. This adapter features a 32 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 standard QFN version, please see P-Q-SSI2130. The first new VCO IC in decades, and worth the wait! The FatKeys™ SSI2130 Voltage Controlled Oscillator provides beautiful triangle, sawtooth, pulse, and square waveforms with unprecedented temperature stability; and adds an on-chip mixer, low distortion sine wave generator, through-zero FM/PM capability and more in an ultra-compact PCB footprint. The SSI2130 is a new-generation voltage controlled oscillator subsystem for high-performance electronic musical instruments.
$19.95
P-Q-SSIDAB2140 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
P-Q1N400X Diode - General purpose rectifier, 1A, 1N400X
A semiconductor device which passes current in the forward direction (from anode to cathode), and blocks current in the opposite direction.
Starting at $0.15
P-Q1N4448 Diode - Small Signal Fast Switching, 1N4448
A semiconductor device which passes current in the forward direction(from anode to cathode), and blocks current in the opposite direction. Features
  • Silicon epitaxial planar diodes
  • Low power loss, high efficiency
  • Low leakage
  • Low forward voltage
  • High speed switching
  • High current capability
  • High reliability

Used in a variety of Fender amps. Replacement for Fender part number 0006260049
$0.15
P-Q1N474X 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.
Starting at $0.20
P-Q1N4937 Diode - Fast Recovery, 1A, 600V, 1N4937
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
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