Lib="Amplifier_Operational" part="LM2902"> Low-Power, Quad-Operational Amplifiers, DIP-14/SOIC-14/SSOP-14Switch, triple pole double throw, separate symbols K switch single-pole double-throw spdt ON-ON K reed magnetic switch D MEC 5G single pole normally-open tactile switch SPST LED OFF-ON D Double Pole Single Throw (SPST) switch, separate symbol D 2x DIP Switch, Single Pole Single Throw (SPST) switch, small symbol D 7x DIP Switch.