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Back1U = 1.75" = 44.45mm // 1HP = 1/5" = 5.08mm // u[nits] # precadsr.sch BOM Mon 19 Apr 2021 10:22:18 AM EDT R14, R15 values changed\ndue to availability Kassu used 1 uF | Polarized capacitor | | | | | | | | S1 | 1 nF | Unpolarized capacitor | Tayda | A-1531 or A-557 | | | | L1 | 1 | TL074 | Quad operational amplifier, DIP-14 A-1135 2 8 pin connector, https://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Customer+Drawing%7F215079%7FY1%7Fpdf%7FEnglish%7FENG_CD_215079_Y1.pdf%7F215079-4 connector TE-Connectivity Micro-MaTch female-on-board top-entry thru-hole 18 pin connector, https://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Customer+Drawing%7F215079%7FY1%7Fpdf%7FEnglish%7FENG_CD_215079_Y1.pdf%7F215079-4 connector TE-Connectivity Micro-MaTch Vertical 215079-8 7-215079-8 USB 3.0, type A, right angle (http://www.molex.com/pdm_docs/sd/467651301_sd.pdf hdmi micro type d right angle DPDT push button https://www.e-switch.com/system/asset/product_line/data_sheet/210/800U.pdf momentary / push-push button, h=17.5mm C&K PVA2 https://www.ckswitches.com/media/1343/pva.pdf tact sw push PVA1 DPST momentary / push-push button, h=20.5mm C&K PVA2 https://www.ckswitches.com/media/1343/pva.pdf tact sw push 12mm SW PUSH SMALL http://www.ckswitches.com/media/1457/ksa_ksl.pdf SW PUSH SMALL Tactile C&K Generic Buzzer, D12mm height 9.5mm shunt pin pitch 2.54mm size 23.3x6.2mm^2 drill 1.1mm pad 2.2mm Terminal Block Phoenix MKDS-1,5-15-5.08 pitch 5.08mm size 40.6x10.6mm^2 drill 1.3mm pad 2.5mm terminal block RND 205-00086 vertical pitch 5mm size 20x8.1mm^2.
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