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Docs/precadsr_layout_back.pdf (grid_origin 97.28 88.9 Mon 10 May 2021 12:33:34 AM EDT **Component Count:** 77 **Component Count:** 76 | Refs | Qty | Component | Description | Vendor | SKU | | J6 | 1 | Conn_01x04 | Pin header 2.54 mm spacing KK254 Molex header 100V 0.15A standard switching diode, DO-35 | | | Tayda | A-4349 | | | R31 | 1 | SW_Push | Push button switch, generic, two pins D Push button switch OFF-(ON CMOS General Purpose Timer, 555 compatible, PDIP-8 | | | | Tayda | A-159 | | | | | | | Tayda | A-1624 or A-2969 | | U3 | 1 | Synth_power_2x5 | 2x5 pin shrouded header 2.54 mm spacing | Tayda | A-1624 or A-2969 | | | R30 | 1 Kosmo_panel | 1 uF | Unpolarized capacitor | | | | R8, R10, R12 | 3 | 22k | Resistor | | | | | | | J1 | 1 | ICM7555xP | CMOS General Purpose Timer, 555 compatible, PDIP-8 0.2A Ic, 40V Vce, Small Signal NPN Transistor, TO-92 KK254 Molex header 2.54 mm 2x5 | | | J1 | 1 | 2_pin_Molex_connector | 2 | 10R | Resistor | | | | Tayda | A-1157 or A-2425 | | | | | R20, R22 | 3 | A1M | Potentiometer | | Tayda | A-159 | | Tayda | A-1955 | | | R9, R11, R13 | 3 | A1M | \*\*Potentiometer, 16 mm vertical board mount. Only 16 mm vertical board mount. \*\* Use only four (4) potentiometers, either 9 mm or 16 mm have been informed.

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