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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.

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P-QMPSA13Transistor - MPSA13, Darlington 500mA 30V NPN
NPN Darlington transistor (TO-92 package) - designed for applications requiring extremely high current gain at collector currents to 1.0A.
  • Max collector to emitter voltage = 30 V
  • Max collector to base voltage = 30 V
  • Max emitter to base voltage = 10 V
  • Max collector current = 1.2 A (continuous)
$0.49
$0.44
You save: 10%
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P-QPF5102Transistor - JFET N-Ch Transistor Lo Freq / Lo Noise, PF5102

PF5102 N-Channel Switch (TO-92 package) - designed for low level analog switching, sample and hold circuits and chopper stabilized amplifiers.



  • Max drain to gate voltage = 40 V
  • Max gate to source voltage = -40 V
  • Max forward gate current = 50 m

$1.55
$1.40
You save: 10%
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R-VM-NUT-2Nut - M8x0.75 hex, for potentiometers / switches / jacks
Package of 5

M8 x 0.75 threaded hex nut. For use on potentiometers, switches, and jacks.


$1.25
$1.13
You save: 10%
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S-M15Heat Shrink - flame retardant polyolefin, 7.6mm unheated, black
Sold by the yard

Very flexible, high flame retardant polyolefin heat shrink tubing. Unheated outer diameter of about 7.6 mm with a 2:1 shrink ratio. Resistant to common liquid solvents with excellent physical, chemical, and electrical performance.


$0.45
$0.41
You save: 9%
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P-Q1N474XDiode - 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
$0.18
You save: 10%
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P-Q1N4937Diode - 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
$0.18
You save: 10%
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S-M12-1080Heat Shrink - Assorted Diameters, 6" Long, 23 Pieces
Package of 23
The shrink ratio on this tubing is 2 to 1, it is fungus resistant and non-corrosive. It is recommended for tightly sealing connectors, terminals, wire splices, and tool handles as well as weather-proofing wire repairs. It may be shrunk with heat guns, oven, etc. Comes in 6 inch lengths.
$5.75
$5.18
You save: 10%
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C-PEICapacitor - 100V, Polyester Film Inductive
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

$0.45
Starting at $0.41
You save: 9%
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P-L400LED 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
$0.77
You save: 9%
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P-L300XLED - 3mm diameter, diffused lens, 3.6 mCd
Package of 5
Colors Available:

Lens Diameter: 3 mm Overall Height: 5.4 mm Lens Type: Diffused Multiple color options available.


$0.65
$0.58
You save: 11%
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(15 pages)
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