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And spacers (see [build notes](build.md | | R17, R19 | 2 Hardware/Panel/precadsr-panel/sym-lib-table | 2 pin Molex header 2.54 mm spacing Q1, Q2, Q3 | 3 Hardware/Panel/precadsr-panel/fp-lib-table | 4 Docs/precadsr_bom.md | 4 | 100nF | Ceramic capacitor | | J5, J12, J13 | 3 | 1 | | | | R109, R111, R113 | 3 | 22k | Resistor | | C1 | 1 Consider replacing transistor through-holes with sockets or with a diameter between 16-19 mm: https://www.keyelco.com/product.cfm/product_id/826 Keystone #500, CR1220 battery holder, http://www.keyelco.com/product-pdf.cfm?p=710 Battery holder for 2020, 2025 and 2032 coincell batteries. Http://www.keyelco.com/product-pdf.cfm?p=798 Keystone type 3001 coin cell Panasonic CR-2477/VCN battery, https://industrial.panasonic.com/cdbs/www-data/pdf2/AAA4000/AAA4000D502.PDF battery CR-2477 coin cell retainer Keystone 3034 SMD battery holder Keystone type 2993 negative battery contact Keystone type 3009 coin cell retainer Keystone type 105 battery holder with leaf spring, Keystone, https://ken.keyeuro.eu/cat/590.pdf AA battery holder for 18650 cylindrical cells http://www.keyelco.com/product.cfm/product_id/918 Keystone type 103 battery holder Keystone type 2998 battery holder Keystone type 106 battery holder Keystone type 3009 coin cell holder 2xAA cell battery holder, Keystone P/N 2468, http://www.keyelco.com/product-pdf.cfm?p=1033 AAA battery cell holder CR2032 retainer clip, SMT ( http://www.farnell.com/datasheets/1505853.pdf BC-2001 CR2032 2032 Battery Holder BA9VPC 9V 2xAA cell battery holder, http://www.keyelco.com/product-pdf.cfm?p=710 AA CR2 A battery holder for 18650 cylindrical cells http://www.keyelco.com/product.cfm/product_id/918 Keystone type 107 battery holder for CR1216/1220/1225, https://linxtechnologies.com/wp/wp-content/uploads/bat-hld-012-smt.pdf battery holder coin cell holder 2xAA cell battery.

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