Synth & Eurorack Parts / DIY

High quality metal film resistors from Vishay / BC Components. PR01 resistors are rated for 1W but have a compact 2.5x8mm package. These resistors look great in vintage and vintage-style builds and have been used in high-end Marshall amplifiers and other audio equipment. Construction: A homogeneous film of metal alloy is deposited on a high grade ceramic body. After a helical groove has been cut in the resistive layer, tinned connecting wires of electrolytic copper or copper-clad iron are welded to the end-caps. The resistors are coated with a red, non-flammable lacquer which provides electrical, mechanical and climatic protection. This coating is not resistant to aggressive fluxes and cleaning solvents.

OC139 NPN germanium transistors. The OC139 is a popular NPN for fuzz pedals and boost effects. This transistor is in a glass SO-2 package with long leads commonly found on germanium transistors. The NPN polarity allows for use with standard pedal power supplies. The dot indicates the collector lead. The OC139 can be found in the EarthQuaker Devices Bows germanium preamp.

Black textured plastic knobs with orange infilled indicator lines similar to the original knobs found on Roland TR-808 drum machines.These knobs feature a straight knurled grip. The large and medium sizes both have a skirt with a notched indicator. All sizes fit 6mm T18 knurled pot shafts.

Thin wall heat shrink tubing available in multiple diameters. The flexible yet durable polyolefin material and standard 2:1 shrink ratio make this heat shrink a great option for electrical insulation, cable bundling, and component protection.

• Operating Temperature: -55°C to +135°C
• Minimum Shrink Temperature: 70°C
• Full Recovery Temperature: 100°C
• UL Approval
• RoHS Compliant

Panel mount LED lenses made of high quality polycarbonate. These lenses provide a clean semi-flush appearance with a small panel footprint and work well in any project using LED indicators. Features:

• 0.171” mounting hole
• For panel thicknesses of 0.031” to 0.125″
• Fresnel lens
• Low Profile
• Fits standard 3mm LEDs

For a version that fits 5mm LEDs, see P-L710-X.

Panel mount LED lenses made of high quality polycarbonate. These square lenses provide a clean semi-flush appearance with a small panel footprint and work well in any project using LED indicators. Features:

• 0.171” mounting hole
• For panel thicknesses of 0.031” to 0.125″
• Fresnel lens
• Low Profile
• Fits standard 3mm LEDs

Panel mount LED lenses made of high quality polycarbonate. These flat cylindrical lenses provide a unique retro appearance with a small panel footprint and work well in any project using LED indicators. Features:

• ¼” mounting hole
• For panel thicknesses of 1/16” to ⅛”
• Fresnel lens
• Flat cylindrical shape
• Fits standard 5mm LEDs

Panel mount LED lenses made of high quality polycarbonate. These flat cylindrical lenses provide a unique retro appearance with a small panel footprint and work well in any project using LED indicators. Features:

• 0.171” mounting hole
• For panel thicknesses of 0.031” to 0.094″
• Fresnel lens
• Flat cylindrical shape
• Fits standard 3mm LEDs

NPN low noise transistor (TO-92 package) - designed for high gain, low noise general purpose amplifier applications.

• Max collector to emitter voltage = 45 V
• Max collector to base voltage = 45 V
• Max emitter to base voltage = 6.5 V
• Max collector current = 0.2 A (continuous)

The 2N3392 is a general purpose NPN transistor in a TO-92 case. The 2N3392 is used in some original silicon Fuzz Face pedals as well as the Brassmaster fuzz.

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

Small PCB adapter boards to convert PCB mount 9mm vertical 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 mini-toggle switch, DPDT, 3 position, ¼" mounting hole diameter, 0.354" bushing length.

• 0.354" bushing length
• 3-Position
• ¼" mounting hole diameter
• Double pole/Double throw (DPDT)
• Solder lugs

CD4093B consists of four Schmitt-trigger circuits. Each circuit functions as a two-input NAND gate with Schmitt-trigger action on both inputs. The gate switches at different points for positive- and negative-going signals. The difference between the positive voltage (VP) and the negative voltage (VN) is defined as hysteresis voltage (VH). Features:

• Schmitt-trigger action on each input with no external components
• Hysteresis voltage typically 0.9 V at VDD = 5 V and 2.3 V at VDD = 10 V
• Noise immunity greater than 50%
• No limit on input rise and fall times
• Standardized, symmetrical output characteristics
• 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
• 5-V, 10-V, and 15-V parametric ratings
• Meets all requirements of JEDEC Tentative Standard No.

Dust cover for standard size 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.

MC78L05 5V Linear Regulator. Used in MOD® kits. The TI version is the LM78L05. This fixed-voltage monolithic integrated circuit voltage regulator is suitable for applications that required supply current up to 100 mA.

The BC183 is a general purpose NPN transistor in a TO-92 case. The BC183 is commonly used in fuzz pedals and has a reputation as a warm sounding silicon transistor for fuzz.

High-quality Bourns 3296Y trimpots. These sealed cermet trimmers have 25 turns for precision setting. ±10% tolerance.

W taper, vertical mount, 20kΩ Alpha pots with a 6.35mm shaft diameter. These 9mm pots are popular in DIY guitar pedals, synthesizers, and other projects. Mounting nut and washer included.

Knurled, slotted nut for W-QP-PJ3410 3.5mm jacks.
See W-QP-NUT-PJ-H for the hex version of this nut.
See S-TND-2X for nut driver tool

TI377 PNP germanium transistors from Texas Instruments. The TI377 is a great PNP for fuzz pedals and other effects. This transistor is in a metal SO-2 package with long leads commonly found on germanium transistors. This package with the gold leads visually matches the 2G308, 2G309, and 2G381 transistors found in Zonk and Tonebender MKI fuzz pedals.

Premium three 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
• 3-Position On/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

TL084 quad op amp in a 14-pin DIP package. These devices are low cost, high speed, dual JFET input operational amplifiers with an internally trimmed input offset voltage ( BI-FET II™ technology). They require low supply current yet maintain a large gain bandwidth product and fast slew rate. In addition, well matched high voltage JFET input devices provide very low input bias and offset currents. The TL082 is pin compatible with the standard LM1558 allowing designers to immediately upgrade the overall performance of existing LM1558 and most LM358 designs. These amplifiers may be used in applications such as high speed integrators, fast D/A converters, sample and hold circuits and many other circuits requiring low input offset voltage, low input bias current, high input impedance, high slew rate and wide bandwidth.

16mm solid shaft audio potentiometers. These pots are great for any project. The smaller size is useful for builds with limited panel space such as guitar pedals, synthesizer modules, and adding modifications to equipment. Washer and nut included.

• Threading: M7 x 0.75
• Distance between terminals: 5 mm (0.197”)
• Bushing Length: 6.5mm (0.256")
• Shaft Diameter: 6.35mm ( 0.250")
• Taper: Audio (Log)