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.
Transistor - BC183, General Purpose, TO-92 case, NPN
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.
$0.70
Op-Amp - TL072, Dual, Low-Noise, JFET Input, 8-Pin DIP
The TL072 is a high speed JFET input dual operational amplifier incorporating well matched, high voltage JFET and bipolar transistors in a monolithic integrated circuit. The device features high slew rates, low input bias and offset current, and low offset voltage temperature coefficient.
$0.70
Transistor - 2N7000, Mosfet, Small Signal
2N7000 N-channel enhancement mode field effect transistors. 2N7000 MOSFETs are used in many DIY projects such as boost and distortion effects pedals.
Features:
  • Voltage Controlled Small Signal Switch
  • High Saturation Current Capability
  • Rugged and Reliable
  • High Density Cell Design for Low RDS(ON)
$0.72
Nut - Dress Nut, For Mini Toggle Switches
Colors Available:
Dress nuts for use with mini toggle switches. 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.
Starting at $0.75
CMOS - CD4011, 2-Input CMOS NAND Gates, 14-Pin DIP
CD4011B NAND gates provide the system designer with direct implementation of the NAND function and supplement the existing family of CMOS gates. All inputs and outputs are buffered. Features:
  • Propagation delay time = 60 ns (typ.) at CL = 50 pF, VDD = 10 V
  • Buffered inputs and outputs
  • Standardized symmetrical output characteristics
  • Maximum input current of 1 µA at 18 V over-full package temperature range; 100 nA at 18 V and 25°C
  • 100% tested for quiescent current at 20 V
  • 5-V, 10-V, and 15-V parametric ratings
  • Noise margin (over full package temperature range:
    • 1 V at VDD = 5 V
    • 2 V at VDD = 10 V
    • 2.5 at VDD = 15 V
  • Meets all requirements of JEDEC Tentative Standard No. 13B, "Standard Specifications for Description of "B" Series CMOS Devices"
$0.75
CMOS - CD4015, Dual 4-Stage Static Shift Register, 16-Pin DIP
CD4015B consists of two identical, independent, 4-stage serial-input/parallel-output registers. Each register has independent CLOCK and RESET inputs as well as a single serial DATA input. "Q" outputs are available from each of the four stages on both registers. All register stages are D-type, master-slave flip-flops. The logic level present at the DATA input is transferred into the first register stage and shifted over one stage at each positive-going clock transition. Resetting of all stages is accomplished by a high level on the reset line.
$0.75
CMOS - CD4049, Hex Inverting Buffer and Converter, 16-Pin DIP
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
$0.75
Nut & Washer - Panel, for ⅜" Potentiometers
Replacement nut and washer for pots with a ⅜" bushing diameter.
$0.75
CMOS - CD4007, Dual Complementary Pair Plus Inverter, 14-Pin DIP
CD4007UB types are comprised of three n-channel and three p-channel enhancement-type MOS transistors. The transistor elements are accessible through the package terminals to provide a convenient means for constructing the various typical circuits as shown in Fig. 2. More complex functions are possible using multiple packages. Numbers shown in parentheses indicate terminals that are connected together to form the various configurations listed. Features:
  • Standardized symmetrical output characteristics
  • Medium Speed Operation — tPHL, tPLH = 30 ns (typ.) at 10 V
  • 100% tested for quiescent current at 20 V
  • Meets all requirements of JEDEC Tentative Standard No.
$0.75
CMOS - CD4093, Quad 2-Input NAND Schmitt Triggers, 14-Pin DIP
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.
$0.75
CMOS - CD4029, Presettable Up/Down Counter, 16-Pin DIP
CD4029B consists of a four-stage binary or BCD-decade up/down counter with provisions for look-ahead carry in both counting modes. The inputs consist of a single CLOCK, CARRY-IN\ (CLOCK ENABLE\), BINARY/DECADE, UP/DOWN, PRESET ENABLE, and four individual JAN signals, Q1, Q2, Q3, Q4 and a CARRY OUT\ signal are provided as outputs. A high PRESET ENABLE signal allows information on the JAM INPUTS to preset the counter to any state asynchronously with the clock. A low on each JAM line, when the PRESET-ENABLE signal is high, resets the counter to its zero count. The counter is advanced one count at the positive transition of the clock when the CARRY-IN\ and PRESET ENABLE signals are low. Advancement is inhibited when the CARRY-IN\ or PRESET ENABLE signals are high. The CARRY-OUT\ signal is normally high and goes low when the counter reaches its maximum count in the UP mode or the minimum count in the DOWN mode provided the CARRY-IN\ signal is low.
$0.75
CMOS - CD4053, 2:1 SPDT, 3-Channel Analog Multiplexer with Logic-Level Conversion, 16-Pin DIP
The CD4053B analog multiplexers are digitally-controlled analog switches having low ON impedance and very low OFF leakage current.
$0.75
Transistor - 2N708, Silicon, TO-18 case, NPN
The 2N708 is a silicon NPN transistor in a TO-18 metal case type. The 2N708 is primarily intended for use in high speed switching and VHF amplification applications.
$0.75
CMOS - CD4013, Dual D-Type Flip-Flop, 14-Pin DIP
The CD4013B device consists of two identical, independent data-type flip-flops. Each flip-flop has independent data, set, reset, and clock inputs and Q and Q outputs. These devices can be used for shift register applications, and, by connecting Q output to the data input, for counter and toggle applications. The logic level present at the D input is transferred to the Q output during the positive-going transition of the clock pulse.
$0.75
Knob - Mini Indicator, Set Screw, 15mm x 11mm
Colors Available:
Mini fluted knob with infilled indicator line. Pairs well with the larger P-K850X. Fits ¼” (6.35mm) pot shafts.
  • Height: 11mm
  • Diameter: 15mm
  • Fits 1/4" shaft with set screw
Starting at $0.75
CMOS - CD40106, Hex Schmitt-Trigger Inverters, 14-Pin DIP
The CD40106B device consists of six Schmitt-Trigger inputs. Each circuit functions as an inverter with Schmitt-Trigger input. The trigger switches at different points for positive- and negative-going signals. The difference between the positive-going voltage (VP) and the negative-going voltages (VN) is defined as hysteresis voltage (VH). Features:
  • Schmitt-Trigger Inputs
  • Hysteresis Voltage (Typical):
    • 0.9 V at VDD = 5 V
    • 2.3 V at VDD = 10 V
    • 3.5 V at VDD = 15 V
  • Noise Immunity Greater Than 50%
  • No Limit On Input Rise and Fall Times
  • Standardized, Symmetrical Output Characteristics
  • 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
  • Low VDD and VSS Current During Slow Input Ramp
  • 5-V, 10-V, and 15-V Parametric Ratings
$0.75
Regulator - LM317T, Adjustable Output, 1.5A, Linear Voltage Regulator
Linear regulator with an adjustable voltage range from 1.2V to 37V. This regulator can supply 1.5A of current making it a great option for power supplies.
$0.75
Screw - M3, Phillips, Pan Head, Machine
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
package of 5
CMOS - CD4050, Hex Inverting Buffer and Converter, 16-Pin DIP
The CD4050B devices are noninverting 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:
  • Noninverting
  • 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
$0.75
CMOS - CD4001, Quad 2-Input NOR Gate, 14-Pin DIP
CD4001UB quad 2-input NOR gate provides the system designer with direct implementation of the NOR function and supplements the existing family of CMOS gates. Features:
  • Propagation delay time = 30 ns (typ.) at CL = 50 pF, VDD = 10 V
  • Standardized symmetrical output characteristics
  • 100% tested for maximum quiescent current at 20 V
  • Meets all requirements of JEDEC Tentative Standard No. 13B, "Standard Specifications for Description of ’B’ Series CMOS Devices"
  • 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
$0.75
Knob - Scalloped Edge, Indicator Line, Set Screw
Colors Available:
Set screw knob with indicator line and scalloped edge. Measures .50" in diameter and .6" in height. Davies 1900H clone
$0.79
Nut - M3-0.5 Hex Nut, Stainless Steel
A threaded fastener made from austenitic stainless steels. It contains chromium creating an invisible surface film that resists oxidation making the metal corrosion resistant. If the surface layer is damaged, it rebuilds itself in the presence of oxygen.
$0.80
package of 5
Transistor - 2N2484, Silicon, TO-18 case, NPN
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.
$0.80
Op-Amp - LF353, Dual, Wide-Bandwidth, JFET Input, 8-Pin DIP
Dual wide-bandwidth LF353 opamps in an 8-pin DIP package. The LF353 offers a high input impedance and 3MHz bandwidth.
This LF353 device is a low-cost, high-speed, JFET input operational amplifier with very low input offset voltage. It requires low supply current yet maintains a large gain-bandwidth product and a fast slew rate. In addition, the matched high-voltage JFET input provides very low input bias and offset currents.
$0.80