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Dual (https://www.vishay.com/docs/71656/ppak12128.pdf, https://www.vishay.com/docs/72598/72598.pdf PowerPAK 1212-8 Single (https://www.vishay.com/docs/71656/ppak12128.pdf, https://www.vishay.com/docs/72597/72597.pdf Vishay PowerPAK SC70 single transistor package http://www.vishay.com/docs/70486/70486.pdf TO-46-4 with Valox case, based on ** https://www.instructables.com/Another-MIDI-to-CV-Box-/ yet another fairly simple one, using Arduino (nano or uno) + MCP4725 (DAC). ** https://hkadesign.org.uk/monotronkb.html for yet another version Alternative: CV from something else VCF MK's Diode Ladder VCF 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 sot190-1_po.pdf VSSOP-8 2.3x2mm Pitch 0.5mm Analog Devices (Linear Tech), 133-pin BGA uModule, 15.0x15.0x4.92mm, https://www.analog.com/media/en/technical-documentation/data-sheets/4637fc.pdf MAPBGA 9x9x1.11 PKG, 9.0x9.0mm, 272 Ball, 17x17 Layout, 0.8mm Pitch, https://www.analog.com/media/en/package-pcb-resources/package/pkg_pdf/ltc-legacy-bga/05081600_0_bga49.pdf https://www.analog.com/media/en/technical-documentation/product-information/assembly-considerations-for-umodule-bga-lga-package.pdf BGA 324 0.8 CS324 CSG324 BGA 324 0.8 GateMate FPGA Maxim WLP-12, W121H2+1, 2.008x1.608mm, 12 Ball, 4x3 Layout, 0.4mm Pitch, https://www.st.com/resource/en/datasheet/stm32u575og.pdf#page=306 ST WLCSP-100, off-center ball grid, ST die ID 472, 4.36x4.07mm, 81 Ball, 9x9 Layout, 0.4mm Pitch, https://www.st.com/resource/en/datasheet/stm32g431c6.pdf ST.

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