Synth & Eurorack Parts / DIY

This nickel-plated steel adapter sleeve converts a 4mm shaft potentiometer to 6mm shaft, allowing for 6mm knobs to be used on a wider range of potentiometers. An additional 6mm to 6.35mm adapter R-VADAPT-25 can then be used to fit 1/4” knobs (sold seperately).

The BAT41 is a schottky diode used in many DIY projects. General purpose metal to silicon diode featuring very low turn-on voltage and fast switching. This device has integrated protection against excessive voltage such as electrostatic discharges.

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.

The AS3109 is Alfa’s version of the Roland IR3109 VCF in an SOIC package. The AS3109 is a high performance voltage controlled four-pole filter. The four independent sections may be interconnected to provide a wide variety of filter responses, such as low pass, high pass, band pass and all pass. A single input exponentially controls the frequency over a range greater than 15 octaves with little control voltage feedthrough. AS3109 features high input impedance buffers. Features

• Voltage controllable range – 15 octaves
• Accurate exponential frequency scale
• High input impedance buffers
• Wide transconductance range
• Low input offset voltage
• Low control voltage feedthrough - 45 dB typical

Applications

• For electronic music

Solid tinned copper bus wire. 105°C temperature rating, 600V.

The BC547 is a silicon general purpose NPN transistor in a TO-92 package. The BC547’s typical applications include signal processing, amplification, and switching. The BC547 is available in two different gain ranges: BC547B and BC547C. Type hFE (IC=2mA, VCE=5V) BC547B 200-450 BC547C 420-800

LM741 single opamp in an 8-pin DIP package. The LM741 has been used in classic guitar pedals such as the Distortion Plus.
The LM741 series are general purpose operational amplifiers which feature improved performance over industry standards like the LM709. They are direct, plug-in replacements for the 709C, LM201, MC1439 and 748 in most applications. The amplifiers offer many features which make their application nearly foolproof: overload protection on the input and output, no latch-up when the common mode range is exceeded, as well as freedom from oscillations.

The 2N5135 is a silicon NPN transistor in a TO-105 case. This transistor is a close match to the rare 2N5133 but with higher voltage ratings and is in a larger package. The hFE range is less wide than the 2N5133 with more values in the range found in the batches used on vintage Big Muff pedals. The lower hFE range also makes these a great option for silicon fuzz pedals.

Carling mini-toggle switch, DPDT, ideal for phase switching, coil-tapping, series/parallel pickup switching in guitars. This switch features a flattened actuator.

• 0.354" bushing length
• 2 Position On-On
• ¼" mounting hole diameter
• Double pole/Double throw (DPDT)

2N321 PNP germanium transistors. The 2N321 is a popular PNP for fuzz pedals and other effects. This transistor is in a TO-5 package with long leads commonly found on germanium transistors.

Carling mini-toggle switch, single pole/double throw, PC Pins. ¼" mounting hole diameter. 0.354" bushing length. 3-Position, On-Off-On.

Small PCB adapter boards to convert PCB mount 9mm right angle pots to wired panel mount pots. These adapters are great for tight builds allowing for more densely populated panels than 16mm options. They’re also a great way to incorporate sealed potentiometers into builds where larger sized options would be cost prohibitive.

Carling, SPDT mini toggle, 2 positions, ¼" mounting hole diameter, 0.354" bushing length.

• 0.354" bushing length
• 2-Position On/On
• ¼" mounting hole diameter
• Single pole/Double throw (SPDT)
• PC mount pins

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"

Dust cover for smaller low profile DC power jacks. This cover is simple to install and can help protect the power jack on effects pedals and other electronics using this style of DC jack. Jack sold separately.

The NJM2120 is a dual operational amplifier of 2-INPUT and 1-OUTPUT with analog switch. The NJM2120 can be used as analog switch under the condition of GV=0dB, as Switch + Amp in order that each gain (A or B) can be adjusted independently. Each amplifier of the NJM2120 has the same electrical characteristics as the NJM4558. The NJM2120 is suitable for audio, video, electrical musical instrument, etc.

Gear duster from Befaco. The Befaco Synth Duster is a great tool for getting dust off of faceplates and other hard to reach spots on your equipment. The super soft bristles can gently clean around pots, jacks, and other hardware.

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.

Linear taper, vertical mount, Alpha pots with a 6mm T18 knurled shaft. These 9mm pots are popular in DIY guitar pedals, synthesizers, and other projects. Mounting nut and washer included.

Hex nut for W-QP-PJ3410 3.5mm jacks. See W-QP-NUT-PJ-R for the round, slotted version of this nut.

2N2646 programmable unijunction transistor often referred to as a PUT. The 2N2646 can be found in many tremolo effects pedal projects and vintage classics such as the Vox Repeat Percussion.

Premium two position DPDT submini toggle switches from Gorva Design. The Bascular Sub Mini switches have a medium 7.37mm actuator length. These switches feature silver plated copper alloy contacts. The bushing is smooth and the switch is secured with the mounting bracket on the PCB. RoHS compliant & lead-free. Details

• 5.59mm non-threaded bushing
• 2-Position On/On
• 4.95mm panel hole diameter
• Double pole/Double throw (DPDT)
• PC Pins

Features

• Power Rating: DC9V, 1A
• Contact Resistance: <20mΩ
• Insulation Resistance: 1000MΩ Minimum
• Dielectric Strength: 1000V RMS @ Sea Level
• Operating Temperature: -40°C ~ +85°C
• Electrical Life: 30,000 Cycles
• RoHS & Lead-free

TL064 quad op amp in a 14-pin DIP package. The JFET-input operational amplifiers of the TL06x series are designed as low-power versions of the TL08x series amplifiers. They feature high input impedance, wide bandwidth, high slew rate, and low input offset and input bias currents. The TL06x series features the same terminal assignments as the TL07x and TL08x series. Features

• Very Low Power Consumption
• Typical Supply Current: 200 µA (Per Amplifier)
• Wide Common-Mode and Differential Voltage Ranges
• Low Input Bias and Offset Currents
• Common-Mode Input Voltage Range Includes VCC+
• Output Short-Circuit Protection
• High Input Impedance: JFET-Input Stage
• Internal Frequency Compensation
• Latch-Up-Free Operation
• High Slew Rate: 3.5 V/µs Typical

A great digital reverb sound that easily replaces a spring reverberation unit. Stereo outputs may be summed for mono operation. Simple interface requires only input, output, +5V, and ground.