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.

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

PCB mounted 3.5mm mono 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.

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.

3.5mm TRS jacks with a switched tip found in many DIY Eurorack projects. These Qingpu Electronics jacks can be panel mounted with wires or more commonly PCB mounted. The PJ3410 jacks can be used for both mono and stereo signals. Hardware sold separately. See accessory items below.

High quality 3.5mm (1/8") plug. Features nickel plated brass contacts, with a nickel plated zinc shell. This plug uses a crimp strain relief for use with 4 mm O.D cables.
Starting at $0.95

LM386 Low Voltage Audio Power Amplifier The LM386 is a mono low voltage amplifier that can be used in a variety of applications. It can drive loads from 4 Ω to 32 Ω. The gain is internally set to 20 but it can be modified from 20 to 200 by placing a resistor and capacitor between pins 1 and 8. As this is an Op Amp it can be used in different configurations to fit in several applications. The internal gain setting resistor allows the LM386 to be used in a very low part count system. In addition a series resistor can be placed between pins 1 and 5 to modify the gain and frequency response for specific applications. These are found in many small audio amplifiers and even tiny pedal sized guitar amplifiers! There are tons of possibilities for this little Op Amp.
$1.25

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.
$4.95

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

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

0.002uF ceramic disc capacitor rated for up to 1kV, ± 10% tolerance.
$0.25

Package of 5
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 $0.45

Ceramic disc capacitors rated for up to 2kV, ± 10% tolerance.
Starting at $0.30

Package of 5
High quality, radial leaded, aluminum electrolytic capacitors rated at 25VDC.
Starting at $0.49

Polyester Film Capacitor used in MOD® Pedal Kits. Rated at 0.1µF 50V. Tolerance: 10%. Operating temperature: -40 C to +85 C
$1.05

Radial ceramic capacitor.
- Voltage rating: 500VDC
- Tolerance: ± 10%
Starting at $0.25

Polyester Film Capacitor used in MOD® Pedal Kits. Rated at 0.047µF 50V. Tolerance: 10%. Operating temperature: -40 C to +85 C
$1.00

Ceramic disc capacitor, 680 pF (.00068µF) rated for up to 50 V.
Non linear temperature coefficient of capacitance
Non linear temperature coefficient of capacitance
$0.55

Package of 5
High quality, radial leaded, aluminum electrolytic capacitors rated at 50VDC.
$0.49

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.
$1.75

Schottky diode with low forward voltage drop and high switching speeds.
$0.15

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

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

A semiconductor device which passes current in the forward direction(from anode to cathode), and blocks current in the opposite direction.
$0.35