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-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-H545 Switch - Carling, Mini Toggle, DPDT, 2-Position, PC Pins
0.354" bushing length. 2-Position On/On. ¼" mounting hole diameter. Double pole/Double throw (DPDT). PC mount pins.
$2.75
P-L200 LED Bezel - for 3mm LED, used for mounting
Holder for mounting LEDs to panels.
$0.65
C-CX-500 Capacitor - 500V, Ceramic Disc, ± 10%
Radial ceramic capacitor.
  • Voltage rating: 500VDC
  • Tolerance: ± 10%
Starting at $0.25
W-QP-518MA 3.5mm Jack - Qingpu, Eurorack, Mono, Switched Tip, PC Mount
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.
$0.45
P-QTL074 Op-Amp - TL074, Quad, Low-Noise, JFET Input, 14-Pin DIP
Low noise JFET quad operational amplifier. Incorporates well matched, high-voltage JFET and bipolar transistors in a monolithic integrated circuit. Features high slew rates, low input bias and offset currents, and low offset voltage temperature coefficients. Features:
  • Wide common-mode and differential voltage range
  • Low input bias and offset current
  • Low noise en = 15 nV/HZ
  • Output short-circuit protection
  • High input impedance JFET input stage
  • Low harmonic distortion: 0.01%
  • Internal frequency compensation
  • Latch up free operation
  • High slew rate: 16 V/us (typical)
$1.15
P-QPT2399 Integrated Circuit - PT2399, Echo / Delay
PT2399 echo/delay chip used in many DIY and commercial pedals. The PT2399 is in a DIP 16 package. Minimal external components are required for use and delay time is set with resistance.
$0.78
P-L400 LED Bezel - with included 3mm Red LED
Bezel Assembly with 3mm Red LED. Required hole size: 0.25". Washer and hex nut included. LED Specifications: Color Red Lens Diam 3 mm Overall Height 5.4 mm Lens Type Diffused Luminous Intensity Min. 3.6 mCd @If (test) 10 mA Wavelngth (Peak) 568 nm V(FM) Max.(V) Forward Voltage 2.7 V @I(F) (test) 10 mA Min Operating Temp -30° Max Operating Temp 80°
$0.85
S-HS-M3-X Screw - M3, Phillips, Pan Head, Machine
Package of 5
Phillips panhead machine screw, M3 metric, zinc. Designed to go through a hole or nut that is pre-tapped to form a mating thread for the screw. Phillips drive is the most common drive used and is designed to "camout" when the screw reaches optimum tightness, thus preventing damage to the screw head.
See S-HS-M3-6-X for colored 6mm M3 screws.
Starting at $0.75
P-KEY-CNT-1 Key Contacts - Korg, Rubber, for Keyboards
For N364 and X5, 5 are required. for N264, 2 are needed. May be cut. Sold individually. These are also used in the Kurzweil MK (MARK)-Series of electronic pianos.
$5.50
P-H544 Switch - Carling, Mini Toggle, SPDT, On-On, PC Mount, right angle
Genuine Carling 2 Position Mini Toggle, On-On, Short Round Bat, Right Angle, PC Mount Features:
  • SPDT ( Single Pole/ Double Throw) On-On switch
  • 0.275" bushing length
  • 0.270” bat length
  • ¼" chassis hole diameter
  • Right angle, PC Mount terminals

Note: On-On switches may sometimes be referred to as On-None-On.
$2.50
R-VNUT-38-X Nut & Washer - Panel, for ⅜" Potentiometers and Jacks
Package of 100
Replacement nut and washer for pots and jacks that feature a ⅜" bushing with 3/8-32 threading. Sold in packs containing 100 nuts and 100 washers.
$25.00
R-VC-FLATWASHER Washer - CTS, Flat, for Potentiometers
Package of 10
Flat washer for 3/8" bushing. Perfect fit for CTS potentiometers. Package of 10.
$1.25
W-QP-NUT-H Nut - Hex, for mounting Qingpu 3.5mm jacks
Hex nut for W-QP-419GR and W-QP-518MA 3.5mm jacks.
See W-QP-NUT-K for the knurled, slotted version of this nut.
See W-QP-WASHER for compatible washer
$0.07
R-VAM300KL Potentiometer - Alpha, 300kΩ, Linear, Knurled Shaft, 16mm
Miniature Alpha pot for guitars. 300K linear taper.
$1.50
P-QTL082 Op-Amp - TL082, Dual, Wide-Bandwidth, JFET Input, 8-Pin DIP
Dual wide-bandwidth TL082 opamps in an 8-pin DIP package. The TL082 offers a high input impedance and 4MHz bandwidth.
$0.21
P-Q1N474X Diode - Zener, 1W, 1N4741A, 1N4748A
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
S-HSO-M3-X Standoff - M3, Male-Female, Aluminum, 5.5mm Diameter
  • Finish/Plating: Clear Iridite
  • Material: Aluminum
  • OD: 5.5mm
  • Shape: Hex (Metric)
  • Style: M-F Standoff
  • Thread Depth(D): 8mm
  • Thread Length (TL): 8mm
  • Thread: M3
  • Type: Threaded Standoffs
Starting at $0.60
P-KORG-MIC Microphone Condenser - Korg, EM197K
Korg condenser microphone EM197K, used on the Korg MicroKORG.
$28.00
On Backorder
P-RBTSE-99FX DSP Module - Accutronics, 99 Effects (Reverb, Chorus, Delay, +)
The BTSE-99FX Effect board provides 99 different digital audio effects to be used in many audio applications that require sound enhancement. Equipped with a superb quality digital effects processing engine which adds that extra punch needed to make sounds truly stand out. Applications:
  • Guitar/ Keyboard/Bass amplifiers and combos
  • Audio mixing consoles / Powered mixing consoles
  • Stand -alone stereo effect units for studio and PA usage
  • Effects pedals
$32.00
P-ECB-67 Knob - Dunlop, MXR, small knurled, aluminum
Genuine Dunlop replacement small knurled knob for MXR pedals. Push -on style knob designed for use with coarse knurled shafts.
$2.35
W-QP-WASHER Washer - Flat, for use on Qingpu Jacks
Flat washer for W-QP-419GR and W-QP-518MA 3.5mm jacks.
$0.07
R-VNUT-38 Nut & Washer - Panel, for ⅜" Potentiometers
Replacement nut and washer for pots with a ⅜" bushing diameter.
$0.70
P-QLM324 Op-Amp - LM324, Quad, Low-Power, 14-Pin DIP
Quad low-power opamps in an 14-pin DIP package. The LM324 offers a 1MHz bandwidth and can be powered from a single supply.
$0.18
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