Pedal Parts / DIY

NJM4558L dual op amp from JRC in a SIP8 package. The NJM4558L is the same as the DIP NJM4558 (JRC4558) otherwise. The SIP version is a great replacement for dual op amps in vintage circuits as well as a space saving package for some PCB layouts. The NJM4558L is a dual high-gain operational amplifier with internal compensation circuit and constructed on a single silicon chip. It offers excellent characteristics by combining the parameters adjusted for a monolithic chip. The channel separation characteristic is suitable for measuring instruments. Features:

• Operating Voltage ( ±4V~±18V )
• High Voltage Gain ( 100dB typ. )
• High Input Resistance ( 5MΩ typ. )
• Bipolar Technology

See P-Q4558 for the DIP version of this chip

2 pole open 1/4" jack, 2 contacts, with washer and nut, panel thickness 3.5 mm, with 0.205" faston tabs

• Rugged, diecast aluminum alloy (tough yet easy to machine), electronic instrument enclosure.
• Lap joint construction provides protection against access of dust and splashing water. Also provides for improved EMI/RFI shielding.
• Vibra finished for a smooth surface with no sharp edges.
• Six 6-32 x ½" machine screws secure lid - into tapped holes.
• Designed to meet IP54.
• Low side wall draft angle (2 degrees or less) for easy P.C. board mounting.
• Dimensions shown are exterior dimensions.

The BC560 is a silicon general purpose PNP transistor in a TO-92 package. The BC560’s typical applications include signal processing, amplification, and switching.

The Gorva S90 is a high quality powder-coated take on the Hammond 1590BBM size enclosure with a focus on function and design. Features:

• Beveled top and rounded corners for high quality look.
• Tight fit and small gap between the enclosure and lid.
• Undercut boss allows more internal room for more flexible layout.
• Smooth, eggshell-like matte powder coating.
• Add 0.16" to enclosure depth for lid.

• One watt rating
• ± 20% tolerance
• New production
• Carbon composition
• Sold individually

Anodized aluminum knob with channeled indicator line and set screw. This slim, solid aluminum knob has a diamond knurled grip with a diameter of 0.495”. It also features a counterbore which allows it to hide pot bushings for a clean look. Fits ¼” (6.35mm) pot shafts.

• Height: 0.56 in.
• Diameter: 0.496 in.
• Fits ¼" shaft with set screw

The NJM4580D is a dual opamp popularly used in many distortion pedals.
This chip is a dual operational amplifier, specially designed for improving the tone control, which is most suitable for the audio application. Featuring noiseless, higher gain bandwidth, high output current and low distortion ratio, it is most suitable not only for acoustic electronic parts of audio pre-amp and active filter, but also for the industrial measurement tools. It is also suitable for the headphone amp at higher output current, and furthermore, it can be applied for the handy type set operational amplifier of general purpose in application of low voltage single supply type which is properly biased of the low voltage source.
Features:

• Operating Voltage ±2V~±18V
• Low Input Noise Voltage 0.8µVrms typ.

Cliff UK 1/4" white jack. External threading: 7/16-20. Ni-Ag® Alloy Self-Cleaning Contacts for superior performance and reliability. Tough, molded Nylon body.