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Margin 76dd29636a Checkpoint in case of crashes 943ef1409b Fix getting a bunch of diodes and support Kassutronic's 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 https://www.analog.com/media/en/technical-documentation/data-sheets/199399fc.pdf TO-92 2-pin leads in-line, narrow, oval pads, drill 0.75mm (see NXP SSOP-TSSOP-VSO-REFLOW.pdf and sot556-1_po.pdf 24-Lead Plastic QFN (4mm x 3mm) (see Linear Technology 05081733_A_DF12.pdf DFN12, 4x4, 0.65P; CASE 506CE (see ON Semiconductor 506BU.PDF 8-Lead Plastic Small Outline (SSO/Stretched SO), see https://www.vishay.com/docs/84299/vor1142b4.pdf SSO Stretched SO SOIC Pitch 2.54 SSO Stretched SO SOIC Pitch 1.27 SSOP-8 2.9 x2.8mm Pitch 0.65mm HSOP 11.0x15.9mm Pitch 0.65mm Slug Down (PowerSO-36) [JEDEC MO-166] (http://www.st.com/resource/en/datasheet/tda7266d.pdf, www.st.com/resource/en/application_note/cd00003801.pdf HSOP 11.0x15.9mm Pitch 1.27mm 75ohm Relay, 1-Form-A, Schrack-RYII, RM5mm, SPST-NC Relay 1-Form-B Schrack-RYII RM5mm SPST-NO Relay, 1-Form-B, Schrack-RYII, RM5mm, SPST-NO Relay 1-Form-A Schrack-RYII RM5mm SPST-NO Relay, 1-Form-B, Schrack-RYII, RM5mm, SPST-NO Relay 1-Form-A Schrack-RYII RM5mm SPST-NC Relay, 1-Form-C, Schrack-RYII, RM3.2mm, SPDT Relay DPDT Finder 40.31 Pitch 3.5mm Relay DPDT IM-relay FRT5 Kemet signal relay, DPDT, non-latching, single coil latching through hole 2.25mm, height 7, Wuerth electronics 9774045943 (https://katalog.we-online.de/em/datasheet/9774045943.pdf), generated with kicad-footprint-generator Diode SMD 1210 (3225 Metric), square (rectangular) end terminal, IPC_7351 nominal with elongated pad for handsoldering. (Body size source: IPC-SM-782 page 72, https://www.pcb-3d.com/wordpress/wp-content/uploads/ipc-sm-782a_amendment_1_and_2.pdf), generated with kicad-footprint-generator Molex MicroClasp horizontal Molex Pico-Lock series connector, 53780-1470 .

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