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BackHorizontal MEC 5G single pole normally-open tactile switch SPST right angle, http://www.nkkswitches.com/pdf/GW.pdf switch single-pole double-throw spdt ON-ON D Push button switch, generic, two pins Switch, single pole double throw, separate symbols Quad Low-Noise JFET-Input Operational Amplifiers, DIP-8/SOIC-8/TO-99-8 | | | ----- | --- | ---- | ----------- | ---- | ---- | ---- | ---- | ---- | ---- | ----------- | ---- | ---- | ---- | ---- | | | | | | Tayda | A-1157 or A-2425 | | R9, R11, R13 | 3 | 2N3904 | 0.2A Ic, 40V Vce, Small Signal NPN Transistor, TO-92 | | Tayda | A-4349 | | | C7, C12 | 1 | LED | Light emitting diode | | | J9 | 1 | SW_Push | Push button switch, push-to-open, generic, two pins | Dailywell | PAS7B3M1CESA6-5 | Tayda | A-553 | | 4 | | | R3, R21 | 2 pin Molex header 2.54 mm spacing"/>