BT139-800E 800 V 16A Triac TO-220 recovery diode It's not difficult to etch

It's not difficult to etch PCBs at home

Connect the outer two pins to VCC and GND to use this potentiometer as a variable resistor

If you don't need advanced flashing patterns or colour mixing

This Koptan 12mm wide High-Temperature Resistant Tape for 3D Printers is a polyester film tape with a high-temperature resistant adhesive

Diameter at base 15mm

BT139-800E 800 V 16A Triac TO-220 recovery diode It's not difficult to etchIts BT139 800E 800 V 16A Triac TO 220, four quadrant sensitive gate triac in a TO 220 plastic package for general purpose bidirectional switching and phase control Applications. This sensitive gate "series E" triac is designed to be directly interfaced to microcontrollers, logic integrated circuits, and other low power gate trigger circuits. Specification Type Triac Non Repetitive On State Current 155 170 A RMS on state current 16A Rated Repetitive