Reforming electrolytic capacitors, multi section capacitor, DC-DC converters
EEV-FK Series 63 V 470 uF Ø 16 x 16.5 mm 105 °C Low Impedance SMT Electrolytic

Emergency lighting, bipolar transistor switch, Voltage regulators
TIP Series 400 V 1 A NPN Through Hole Silicon Power Transistor - TO-220AB

Tyco Electronics non latching & latching relays. 110VAC, 24VDC power relay
RYII Series 8 A SPDT 12 VDC PCB Mount Miniature General Purpose Power Relay

Power transistor, Digital transistor manufacturers, mosfet circuit, audio mosfet
Single N-Channel 200 V 0.15 Ohm 67 nC HEXFET® Power Mosfet - TO-220-3

what is ESD protection, control systems, Diode, transient-voltage-suppression
PRTR Series 9 V 40 pF Quad Low Capacitance ESD Protection - SC-74