LEDs & Optoelectronics

Optocoupler. Vibrato LDR for Fender Amps. Fix the dead LDR-style tremolo on your vintage Fender amps as well as others.

• Non-polarized optical side is indicated by silver dot and slightly longer leads
• Resistive side is indicated only by slightly shorter leads
• This neon lamp optocoupler is commonly referred to as a roach

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:

• ¼” mounting hole
• For panel thicknesses of 1/16” to ⅛”
• Fresnel lens
• Low Profile

Holder for mounting LEDs to panels.

VTL5C1 vactrols for use in amplifiers, effect pedals, synthesizers and more. The VTL5C1 was commonly used for channel switching circuits in amps made by Crate and others.

Bezel Assembly with 3mm Red LED. Required hole size: 0.25". Washer and hex nut included. LED Specifications: Color Red Lens Diam 3 mm Overall Height 5.4 mm Lens Type Diffused Luminous Intensity Min. 3.6 mCd @If (test) 10 mA Wavelngth (Peak) 568 nm V(FM) Max.(V) Forward Voltage 2.7 V @I(F) (test) 10 mA Min Operating Temp -30° Max Operating Temp 80°

Lens Diameter: 3 mm Overall Height: 5.4 mm Lens Type: Diffused Multiple color options available.

5 mm diameter Red LED with holder. Perfect for amps and effects. Mounts in a 5/16" diameter chassis hole.

High quality vactrols from Xvive. The Xvive vactrols are clones of the original Excelitas / Perkins-Elmer vactrols used in many effects pedals, synthesizers, compressors and other equipment. These vactrols feature a thick epoxy sealed casing. The VTL5C3 and VTL5C3/2 both have a steep slope, good dynamic range, a very low temperature coefficient of resistance, and a small light history memory.

High brightness 5mm LED. Great for use in pedal and amp builds as well as other applications where a bold, bright, indicator is needed. Multiple colors available.

• 5mm size
• Water clear
• High brightness
• Multiple colors available
• Package of 5

Leaded LED rings for use with standard footswitches. These LED rings use an array of LEDs with internal current limiting so no additional parts are required for use with 9VDC. Red, green, blue, and two-color combinations are available. A 15mm panel hole is required. See full dimensions below to check footswitch compatibility.

5mm (T-1 ¾) diffused LED’s. Great for use in pedal builds and other applications where a tinted and diffused indicator is needed. Multiple colors available.

• 5mm size
• Tinted and diffused
• Multiple colors available
• Package of 5

Prewired steel low-profile LED bezel with a diffused LED. With a 0.061” height, this steel LED bezel has an almost flush appearance on the panel it’s mounted to. An internal current limiting resistor is installed in this bezel and it can be used with voltages up to 12V. Mounting nut and rubber o-ring included.

High brightness 3mm LED. Great for use in pedal builds and other applications where a bold, bright, indicator is needed. Multiple colors available.

• 3mm size
• Water clear
• High brightness
• Multiple colors available
• Package of 5

Prewired low-profile LED bezel with a diffused LED. With a 0.07” height, this black metal LED bezel has an almost flush appearance on the panel it’s mounted to. An internal current limiting resistor is installed in this bezel and it can be used with voltages up to 12V. Mounting nut and rubber o-ring included.

Prewired cone-shaped LED bezel. An internal current limiting resistor is installed in this bezel and it can be used with voltages up to 12V. Mounting nut and lock washer included.

Photocell for Morley effects pedals. Great replacement for LDR1, LDR2 and LDR3 (M79-211564-000) in Morley Pro Series Volume PVO. Sold individually.
A photocell may also be referred to as a photoresistor, LDR, or light dependant resistor.

Prewired cup-shaped LED bezel with a red LED. An internal current limiting resistor is installed in this bezel and it can be used with voltages up to 12V. Mounting nut and lock washer included.

This small PCB is a simple way to add an indicator light that pulses to the rate of LFOs and clocks used in pedals, synthesizers, and other equipment. Simply connect the positive supply voltage to V+, ground to GND, and the output of a positive signal (0 to V+) such as an LFO or clock to the IN pad. The trimmer can adjust how the LED reacts to the signal. Fully clockwise it will simply pulse on and off when paired with a strong signal. If the signal is a sine, triangle, or any other non-pulse type signal, adjusting the trimmer counter clockwise can dial in settings that follow the shape of the waveform, brightening and dimming with the changing voltage. For certain dual op-amp LFOs in effect pedals, the signal may not go low enough to turn the LED fully off.