Synth & Eurorack Parts / DIY

This low profile panel mount barrel jack is the original style Lumberg used before they changed the design of their jack. This high quality jack is the perfect size for smaller builds where additional space is necessary. The low profile DC jack is also great for builds where aesthetics are a priority. For use with barrel plugs with a 5.5mm external diameter and 2.1mm internal diameter. Mounting nut included.

High quality Japanese made ¼” stereo jack similar to those found in many Boss pedals. This jack has three solder lugs. One for the tip, one for the ring, and one for the sleeve. This style of jack has been widely used across the industry and can also be found in many Roland items. Includes nut and washer.

High quality Japanese made ¼” mono jack similar to those found in many Boss pedals. This jack has two solder lugs. One for the tip and one for the sleeve. This style of jack has been widely used across the industry and can also be found in many Roland items. Includes nut and washer.

2SA235 PNP germanium transistors manufactured by Hitachi. The 2SA235 is a popular PNP for fuzz pedals and other effects. This transistor is in a TO-1 package with long leads commonly found on germanium transistors. The additional leg is an optional connection for the case.

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)

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

The 2N4125 is a general purpose silicon NPN transistor in a TO-92 case. The 2N4125 is primarily intended for general purpose amplification. It is a popular choice for silicon fuzz pedals due to its low hFE specifications. It has also been used in a variety of classic pedals such as the Phase 90.

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.

2 to 1 heat shrink tubing variety pack with multiple colors in each size. This pack includes six different diameters ranging from 1/16” to 3/8”. Each piece is 4” in length. This set comes in a hard plastic case perfect for sorting and storing heat shrink. Features:

• Resistant to common fluids and solvents
• UL and CSA listed
• UV resistant
• Meets DEF. STAN 59.97
• Meets UL 224, 125°C and CSA C22.2 No. 198.1
• Meets MIL-DTL-23053/5 Class 2 & 3
• Flame retardant (Does not include transparent)
• Seals and protects cable splices and terminations.
• Thin wall tubing

Included Sizes (Diameter):

• 60 pieces - 1/16 in.
• 35 pieces - 3/32 in.
• 25 pieces - 1/8 in.
• 20 pieces - 3/16 in.
• 10 pieces - 1/4 in.
• 10 pieces - 3/8 in.

High quality single row machine pin sockets made by Preci-Dip. These sockets are the break-away type and can easily snap into smaller sizes such as 5 separate transistor sockets.

This is a set of two 2N1309 germanium transistors that have been hand-selected to work in the germanium Fuzz Face circuit. Also included are 4 metal film resistors to use in the circuit. In most cases, the values have been modified from the stock values slightly to ensure that the collector of Q2 biases to roughly -4.5V. A data sheet containing the schematic and the resistor values is included so that you can use your own resistor type if you would prefer. There is a range of bias voltages that can sound nice in a Fuzz Face, and voltages in original units varied. These transistors have been tested with bias voltage, sound, and noise level in mind. Note that due to a variety of factors such as battery/PSU voltage, temperature, and component tolerance, the voltage on the collector of Q2 may not measure at exactly -4.5V, but it should be close in a properly-built circuit.

The Switchcraft Type 111X enclosed ¼” jack is a high quality mono jack. This jack has two solder lugs. One for the tip and one for the sleeve. These jacks have been widely used across the industry and can also be found in many popular 5U synthesizers. Includes nut and washer.

• Type 111X
• 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

See W-SC-112BX for stereo

A great digital reverb sound that easily replaces a spring reverberation unit. Simple interface requires only input, output, +5V, and ground. Output requires no external capacitors.

The 2N2484 is a silicon planar epitaxial NPN transistor in a TO-18 metal case type. The 2N2484 is primarily intended for use in high performance, low level, low noise amplifier applications.

Dual low power opamps in an 8-pin DIP package. The TL062 offers a high input impedance and 1MHz bandwidth.

High quality R82 Series box film capacitors from Kemet. These polyester film capacitors have 5mm lead spacing, a minimum voltage rating of 63VDC, and a tolerance of ±10% or better. The small size, high specifications, and radial mounting makes them an excellent choice for PCB builds of pedals, synthesizer, and other audio equipment. The R82 Series is constructed of metallized polyester film with radial leads of tinned wire. Radial leads are electrically welded to the contact metal layer on the ends of the capacitor winding. The capacitor is encapsulated with thermosetting resin in a box of material meeting the UL 94V–0 requirements.

• Voltage rating: 63 VDC Minimum
• Lead Spacing: 5 mm
• Capacitance tolerance: ±10% or better
• Operating temperature range of -55˚C to +105˚C
• RoHS compliance and lead-free terminations
• Self-healing

Small plastic control knob with set screw and brass insert. This knob features a radial-brushed metal top and a stylish vertical knurl. The style is similar to the Boss middle knobs used on many pedals. Fits ¼” (6.35mm) pot shafts.

New old stock 2N404A PNP germanium transistors manufactured by Texas Instruments. These TI 2N404A feature gold plated leads. The 2N404A is used in many fuzz pedals along with other effects. The 2N404A is the same as the 2N404 but with a higher voltage rating. This transistor is in a TO-5 package with long leads commonly found on germanium transistors.

Threaded through dress nuts for use with mini toggle switches. Unlike the other versions of this dress nut, this nut is not capped allowing the nut to thread past the top of the switch’s bushing. The uncapped top can be useful where internal depth is an issue such as parallel PCB mounting. These plated dress nuts feature a chamfered edge for a professional look and work on any 1/4-40 UNS threaded bushing. Two sides are flatted for use with a tool when fastening.

LM1458 dual op amp in an 8-pin DIP package. The LM1458 is a general purpose dual operational amplifier. The two amplifiers share a common bias network and power supply leads. Otherwise, their operation is completely independent. Features

• No Frequency Compensation Required
• Short-Circuit Protection
• Wide Common-Mode and Differential Voltage Ranges
• Low-Power Consumption
• 8-Lead TO-99 and 8-Lead PDIP
• No Latch Up When Input Common Mode Range is Exceeded

The Sound Semiconductor DAB2130 is a pre-soldered DIP converter for the SSI2130. This board features the SSI2130 and two decoupling caps for the V+ and V- inputs. The pinout is labelled on the board and matches the QFN pinout. This adapter features a 32 pin DIP base with a .600 in. width. The pins are standard male headers so 2.54mm female headers are recommended for socketing the board. For the standard QFN version, please see P-Q-SSI2130. The first new VCO IC in decades, and worth the wait! The FatKeys™ SSI2130 Voltage Controlled Oscillator provides beautiful triangle, sawtooth, pulse, and square waveforms with unprecedented temperature stability; and adds an on-chip mixer, low distortion sine wave generator, through-zero FM/PM capability and more in an ultra-compact PCB footprint. The SSI2130 is a new-generation voltage controlled oscillator subsystem for high-performance electronic musical instruments.

The CD4049UB devices are inverting hex buffers, and feature logic-level conversion using only one supply voltage (VCC). The input-signal high level (VIH) can exceed the VCC supply voltage when these devices are used for logic level conversions. These devices are intended for use as CMOS to DTL or TTL converters and can drive directly two DTL or TTL loads. (VCC = 5 V, VOL ≤ 0.4 V, and IOL ≥ 3.3 mA.) Features:

• Inverting
• High Sink Current for Driving 2 TTL Loads
• High-to-Low Level Logic Conversion
• 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

Applications

• CMOS to DTL or TTL Hex Converters
• CMOS Current Sink or Source Drivers
• CMOS High-to-Low Logic Level Converters

The AS3080E is Alfa’s version of the CA3080 IC. The AS3080E is a gain block which is the operational-transconductance-amplifier (OTA). The AS3080E has differential input and a single-ended, push-pull, class A output. Amplifier bias
input may be used either for gating or for linear gain control. High output impedance and transconductance (gM) is directly proportional to the amplifier bias current (IABC). Linearizing diodes are provided at the inputs to reduce distortion and allow higher input levels. The result is a 10-dB signal-to-noise improvement referenced to 0.5 percent THD.
The AS3080E is notable for it’s high slew rate (50V/µs), which makes it especially useful for multiplexer and fast unity-gain voltage followers.

For Yamaha DX7, DX7 II, FX20, Korg M1, Trinity and T Series.