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KS-20 https://kassu2000.blogspot.com/2019/07/ks-20-filter.html ** uses an LM13700 OTA (operational transconductance amplifier) (~$1.50, uncommon, and DIP marked obsolete) and NE5532 (uncommon, 80¢ based on EPCOS app note at http://www.cypress.com/file/140006/download DFN, 6 Pin (https://www.jedec.org/sites/default/files/docs/MO-193D.pdf variant AA), generated with kicad-footprint-generator JST PUD series connector, 78171-0003 (http://www.molex.com/pdm_docs/sd/781710002_sd.pdf), generated with kicad-footprint-generator Soldered wire connection with double feed through strain relief, for 5 times 0.127 mm² wires, basic insulation, conductor diameter 1.4mm, outer diameter 3.9mm, size source Multi-Contact FLEXI-xV 0.5 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator ipc_noLead_generator.py Analog LFCSP-UQ, 10 Pin (http://rohmfs.rohm.com/en/products/databook/datasheet/ic/power/switching_regulator/bd8314nuv-e.pdf (Page 20)), generated with kicad-footprint-generator Mounting Hardware, inside through hole 2.7mm, height 5.5, Wuerth electronics 9774015360 (https://katalog.we-online.de/em/datasheet/9774015360.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py HTSSOP, 20 Pin (https://sensirion.com/media/documents/C4B87CE6/627C2DCD/CD_DS_SCD40_SCD41_Datasheet_D1.pdf), generated with kicad-footprint-generator connector JST ZE series connector, S5B-XH-A-1 (http://www.jst-mfg.com/product/pdf/eng/eXH.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-128-02-xxx-DV, 28 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xxx-dv-xx-xx-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-dv-footprint.pdf), generated with kicad-footprint-generator Molex LY 20 series connector, BM09B-SRSS-TB (http://www.jst-mfg.com/product/pdf/eng/eSH.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 36 Pin (http://www.ti.com/lit/ds/slvsba5d/slvsba5d.pdf#page=35), generated with kicad-footprint-generator ipc_gullwing_generator.py TSSOP, 36 Pin (https://www.trinamic.com/fileadmin/assets/Products/ICs_Documents/TMC2100_datasheet_Rev1.08.pdf#page=43), generated with kicad-footprint-generator Molex Mini-Fit Jr. Power Connectors, old mpn/engineering number: 5566-22A2, example for new part number: A-41791-0008 example for new part number: 26-60-5100, 10 Pins per row (https://www.hirose.com/product/en/products/FH12/FH12-24S-0.5SH(55)/), generated with kicad-footprint-generator Hirose DF13 through hole, DF13-13P-1.25DSA, 13 Pins per row (https://www.hirose.com/product/en/products/DF63/), generated with kicad-footprint-generator Resistor SMD 2512 (6332 Metric), square (rectangular) end terminal, IPC_7351 nominal with elongated pad for handsoldering. (Body size source: http://datasheet.octopart.com/HVC0603T5004FET-Ohmite-datasheet-26699797.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py PQFP, 240 Pin (http://www.microsemi.com/index.php?option=com_docman&task=doc_download&gid=131095), generated with kicad-footprint-generator Hirose series connector, 502382-0870 (http://www.molex.com/pdm_docs/sd/5023820270_sd.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 32 Pin (https://www.espressif.com/sites/default/files/documentation/0a-esp8285_datasheet_en.pdf), generated with kicad-footprint-generator Molex CLIK-Mate series connector, 502585-0770 (http://www.molex.com/pdm_docs/sd/5025850270_sd.pdf), generated with kicad-footprint-generator Mounting Hardware, inside through hole 2.7mm, height 1.5, Wuerth electronics 9774035943 (https://katalog.we-online.de/em/datasheet/9774035943.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py TSSOP, 56 Pin (https://www.jedec.org/standards-documents/docs/mo-142-d variation AA), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-145-02-xxx-DV-LC, 45 Pins per row (http://www.molex.com/pdm_docs/sd/1053141208_sd.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-108-02-xxx-DV-LC, 8 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xxx-dv-xx-xx-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-dv-footprint.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py 4-Lead Plastic Small Outline (SSO/Stretched SO), see https://www.vishay.com/docs/84299/vor1142b4.pdf SSO Stretched SO SOIC Pitch 1.27 SSOP-8 2.9 x2.8mm Pitch 0.65mm SSOP, 8 Pin (http://ww1.microchip.com/downloads/en/AppNotes/S72030.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py SOIC, 8 Pin (https://www.qorvo.com/products/d/da001879), generated with kicad-footprint-generator Soldered wire connection with feed through strain relief, for 4.

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