The TC-33/35 series is a type of printed circuit board (PCB) passive components manufactured by SR Passives. This series is composed of single sided and multi-layer printed circuit boards that are used in a variety of embedded applications, such as industrial automation, energy automation, automotive electronics, medical equipment, and consumer electronics. The main feature of these components is their high power rating, resistance to thermal shock, and low ESR/ESL. They are well suited for use in systems where temperature may vary widely and short circuit protection is necessary. They can also be used in other dynamic environments where physical shock and vibration are present. Some of the most popular products in this line-up include resistors, capacitors, inductors, diodes, transistors, and light-emitting diodes (LEDs).