# 1183/1184 Quad VCA BOM **URL:** \ **Category:** KOSMO MODULES\ **Created:** [March 27, 2020, 7:07pm UTC](https://lookmumnocomputer.discourse.group/t/1183-1184-quad-vca-bom/460 "2020-03-27T19:07:37Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![d42kn355](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/d42kn355/32/273_2.png) [@d42kn355](https://lookmumnocomputer.discourse.group/u/d42kn355)\ **Post date:** [March 27, 2020, 7:07pm UTC](https://lookmumnocomputer.discourse.group/t/1183-1184-quad-vca-bom/460/1 "2020-03-27T19:07:37Z")
1183/1184 Quad VCA BOM ![KOSMO QUAD VCA MIXER DIY](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/1/100e4f19f2875af1882682a3e3bae8bec17cc138.jpeg) Most parts are sourced from Tayda with the exception of the following: BZX55C2V0, AS3360, and Tayda is almost always out of b100k 9mm pots. **VCA Mixer Board** _ **BOM** _ ![1184 2](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/b/bd4c72e6d979ca47aa08623c38a03c5dae2709ec.jpeg) 1: [BZX55C2V0](https://www.mouser.com/ProductDetail/Taiwan-Semiconductor/BZX55C2V0-R0G?qs=sGAEpiMZZMtQ8nqTKtFS%2FEl6opqoFIJEfQj7G16QPz8a3VvWoAmYCQ%3D%3D) (Mouser) [BZX55C2V0](https://www.ebay.com/itm/1-2W-5-Watt-Zener-Diode-2V-47V-DO-35-DO35-10-Pieces-USA-SELLER/183488135290?hash=item2ab8bec07a:m:m4fQ4AMPT4G_n7LZ2NcJcUA) (Ebay) Designator: D1, D2, D3, D4 Qty: 4 2: [10-Pin Eurorack Power Connector](https://www.taydaelectronics.com/connectors-sockets/box-header-connectors/10-pin-box-header-connector-2-54mm.html) Designator: J1 Qty: 1 3: [TL072 Dual OpAmp](https://www.taydaelectronics.com/tl072-low-noise-j-fet-dual-op-amp-ic.html) Designator: U7 Qty: 1 4: [AS3360](https://electricdruid.net/product/as3360-dual-vca/) (Electric Druid) [AS3360](https://modularaddict.com/parts/synth-diy-parts/alfa-cemchips) (Modular Addict) Designator: U5, U6 Qty: 2 5: [TL074 Quad OpAmp](https://www.taydaelectronics.com/tl074-quad-operational-amplifier-j-fet-pdip-14-tl074cn.html) Designator: U1, U2, U3, U4 Qty: 4 6: [Ferrite Beads](https://www.taydaelectronics.com/axial-ferrite-bead-76-ohm.html) or [10R (10 Ohm) Metal Film Resistor](https://www.taydaelectronics.com/resistor-10-ohm-1-4w-1-metal-film-pkg-of-10.html) Designator: FB1, FB2 Qty: 2 7: [1k Metal Film Resistor](https://www.taydaelectronics.com/10-x-resistor-1k-ohm-1-4w-1-metal-film-pkg-of-10.html) Designator: R39, R40, R47, R48, R57, R58, R59, R60, R72 Qty: 9 8: [100k Metal Film Resistor](https://www.taydaelectronics.com/10-x-resistor-100k-ohm-1-4w-1-metal-film-pkg-of-10.html) Designator: R9, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23, R24, R25, R26, R27, R28, R29, R30, R31, R32, R49, R50, R51, R52, R53, R54, R55, R56, R65, R66, R67, R68, R69, R70, R71 Qty: 39 9: [47k Metal Film Resistor](https://www.taydaelectronics.com/10-x-resistor-47k-ohm-1-4w-1-metal-film-pkg-of-10.html) Designator: R35, R38, R43, R46 Qty: 4 10: [20k Metal Film Resistor](https://www.taydaelectronics.com/resistor-20k-ohm-1-4w-1-metal-film-pkg-of-10.html) Designator: R34, R37, R42, R45 Qty: 4 11: [6k8 Metal Film Resistor](https://www.taydaelectronics.com/6-8k-ohm-1-4w-1-metal-film-resistor.html) Designator: R33, R36, R41, R44 Qty: 4 12: [470k Metal Film Resistor](https://www.taydaelectronics.com/10-x-resistor-470k-ohm-1-4w-1-metal-film-pkg-of-10.html) Designator: R2, R4, R6, R8 Qty: 4 13: [220k Metal Film Resistor](https://www.taydaelectronics.com/resistor-220k-ohm-1-4w-1-metal-film-pkg-of-10.html) Designator: R1, R3, R5, R7 Qty: 4 14: [2N3904](https://www.taydaelectronics.com/2n3904-npn-general-propose-transistor.html) Designator: Q1, Q2, Q3, Q4 Qty: 4 15: [6.35mm Box Style Jack Sockets](https://www.taydaelectronics.com/hardware/6-35mm-1-4-plugs-jacks/6-35mm-1-4-stereo-phone-jack.html) Designator: J6, J7, J8, J9, J10, J11, J12, J13, J14, J15, J16, J17, J22 Qty: 13 17: [Male Single Row 2.54mm Header](https://www.taydaelectronics.com/connectors-sockets/pin-headers/40-pin-2-54-mm-single-row-pin-header-strip.html) (40-Pin, Break off into four 8-Pin Headers for the Main Board) Designator: J2, J3, J4, J5 Qty: 1 (Qty: 4 1x8-Pin Headers) 15: [100nf (0.1uf) Ceramic Capacitor](https://www.taydaelectronics.com/test-group-2.html) Designator: C3, C4, C7, C8, C9, C10, C11, C12, C13, C14 Qty: 10 16: [4n7 (0.0047uF/4700pF ) Ceramic Capacitor](https://www.taydaelectronics.com/test-group-2.html) Designator: C5, C6 Qty: 2 17: [10uf Electrolytic Capacitor](https://www.taydaelectronics.com/10uf-25v-105c-radial-electrolytic-capacitor-5x11mm.html) Designator: C1,C2 Qty: 2 **VCA Daughter Board** _ **BOM** _ ![1184 3](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/6/6781297aa2aba9806d1a9f1c5f4899063756e4e8.jpeg) 1: [SPDT ON-ON Mini Toggle Switch](https://www.taydaelectronics.com/electromechanical/switches-key-pad/toggle-switch/mini-toggle-switch-spdt-on-none-on.html) Designator: SW1, SW2, SW3, SW4 Qty: 4 2: [DPDT ON-ON Mini Toggle Switch](https://www.taydaelectronics.com/electromechanical/switches-key-pad/toggle-switch/mini-toggle-switch-1m-series-dpdt-on-on.html) Designator: SW5, SW6, SW7, SW8 Qty: 4 3: [B100k 9mm Alpha Potentiometer](https://www.taydaelectronics.com/potentiometer-variable-resistors/rotary-potentiometer/linear/100k-ohm-linear-taper-potentiometer-round-shaft-pcb-9mm.html) (Tayda - almost always out of stock) [B100k 9mm Alpha Potentiomer](https://modularaddict.com/parts/potentiometers-1/9mm-potentiometers) (Modular Addict) Designator: RV1, RV2, RV3, RV4, RV5 Qty: 5 4: [1k Metal Film Resistor](https://www.taydaelectronics.com/10-x-resistor-1k-ohm-1-4w-1-metal-film-pkg-of-10.html) Designator: R61, R62, R63, R64 Qty: 4 5: [8-Pin Female Single Row 2.54mm Header](https://www.taydaelectronics.com/connectors-sockets/pin-headers/8-pin-2-54-mm-single-row-female-pin-header.html) (for Daughter Board) Designator: J18, J19, J20, J21 Qty: 4 6: [5mm LED](https://www.taydaelectronics.com/leds/round-leds/5mm-leds.html) Designator: D5, D6, D7, D8, D9, D10, D11, D12 Qty: 8 ![1184 1](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/e/e546433ad5ab4f584e4f047209428eafc3514bab.jpeg) Happy Building! ---
**Author:** ![lookmumnocomputer](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/lookmumnocomputer/32/23_2.png) [@lookmumnocomputer](https://lookmumnocomputer.discourse.group/u/lookmumnocomputer)\ **Post date:** [March 27, 2020, 7:21pm UTC](https://lookmumnocomputer.discourse.group/t/1183-1184-quad-vca-bom/460/2 "2020-03-27T19:21:25Z")
very nice! ill pop a link on the page 😃 ---
**Author:** ![popflier](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/popflier/32/80_2.png) [@popflier](https://lookmumnocomputer.discourse.group/u/popflier)\ **Post date:** [March 28, 2020, 1:34am UTC](https://lookmumnocomputer.discourse.group/t/1183-1184-quad-vca-bom/460/3 "2020-03-28T01:34:22Z")
So Mouser doesn’t stock the [BZX55C2V0](https://www.mouser.com/ProductDetail/Taiwan-Semiconductor/BZX55C2V0-R0?qs=sGAEpiMZZMsODaMWbDSzPcJ6ho9qI40BKDRHdaDP%2FI0%3D) Zener diode that you linked to. They do stock this one though, which I think will work? Can someone confirm this who knows more than I do about circuits and reading data sheets? [https://www.mouser.com/ProductDetail/Taiwan-Semiconductor/BZX55C2V0-R0G?qs=sGAEpiMZZMtQ8nqTKtFS%2FEl6opqoFIJEfQj7G16QPz8a3VvWoAmYCQ%3D%3D](https://www.mouser.com/ProductDetail/Taiwan-Semiconductor/BZX55C2V0-R0G?qs=sGAEpiMZZMtQ8nqTKtFS%2FEl6opqoFIJEfQj7G16QPz8a3VvWoAmYCQ%3D%3D) ---
**Author:** ![fredrik](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/fredrik/32/682_2.png) [@fredrik](https://lookmumnocomputer.discourse.group/u/fredrik)\ **Post date:** [March 28, 2020, 4:30am UTC](https://lookmumnocomputer.discourse.group/t/1183-1184-quad-vca-bom/460/4 "2020-03-28T04:30:18Z")
Yes, the R0G bit is just a packaging code (R0 for reel which doesn’t matter unless you buy 10,000 of them, G for halogen free). Any 2 V zener will work here (1N4615, 1N4679, BZX55C2V0, BZX79C2V0, …) or if you cannot find 2 V anything from 1.9 to 2.4 V or so should be fine (and the diode will usually don’t do anything, it’s there’s to keep the CV to the chip within spec, in case you try to overwhelm the circuitry…) EDIT: Added some alternatives. ---
**Author:** ![d42kn355](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/d42kn355/32/273_2.png) [@d42kn355](https://lookmumnocomputer.discourse.group/u/d42kn355)\ **Post date:** [March 28, 2020, 1:03pm UTC](https://lookmumnocomputer.discourse.group/t/1183-1184-quad-vca-bom/460/5 "2020-03-28T13:03:56Z")
Edited to include the link to the R0G version - whoops - lol ---
**Author:** ![Riggidyboo](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/riggidyboo/32/10_2.png) [@Riggidyboo](https://lookmumnocomputer.discourse.group/u/Riggidyboo)\ **Post date:** [March 28, 2020, 9:57pm UTC](https://lookmumnocomputer.discourse.group/t/1183-1184-quad-vca-bom/460/6 "2020-03-28T21:57:08Z")
@lookmumnocomputer your projects page of your website says AS3340 ---
**Author:** ![lookmumnocomputer](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/lookmumnocomputer/32/23_2.png) [@lookmumnocomputer](https://lookmumnocomputer.discourse.group/u/lookmumnocomputer)\ **Post date:** [March 28, 2020, 10:10pm UTC](https://lookmumnocomputer.discourse.group/t/1183-1184-quad-vca-bom/460/7 "2020-03-28T22:10:02Z")
thanks for letting me know!!! fixing now 😃 ---
**Author:** ![Caustic](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/caustic/32/15588_2.png) [@Caustic](https://lookmumnocomputer.discourse.group/u/Caustic)\ **Post date:** [March 29, 2020, 3:26am UTC](https://lookmumnocomputer.discourse.group/t/1183-1184-quad-vca-bom/460/8 "2020-03-29T03:26:52Z")
Im going to claim credit for this cause i got them confused earlier. :B ---
**Author:** ![CTorp](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/ctorp/32/15023_2.png) [@CTorp](https://lookmumnocomputer.discourse.group/u/CTorp)\ **Post date:** [March 29, 2020, 4:43am UTC](https://lookmumnocomputer.discourse.group/t/1183-1184-quad-vca-bom/460/9 "2020-03-29T04:43:42Z")
@d42kn355 I really appreciate you make these tayda lists bro! ---
**Author:** ![sebastian](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/sebastian/32/39_2.png) [@sebastian](https://lookmumnocomputer.discourse.group/u/sebastian)\ **Post date:** [April 5, 2020, 7:43pm UTC](https://lookmumnocomputer.discourse.group/t/1183-1184-quad-vca-bom/460/10 "2020-04-05T19:43:47Z")
I have troubles with finding the jack sockets here in Germany… I am considering tayda, but there are sometimes issues with importing this stuff. Anyone used tayda from Germany? I am not sure where they are based, but if they are in the UK, there should be no problem with import right? I found these at [musikding.de](http://musikding.de), but I am not sure if they will match. It looks like there are too many outputs… ![63mm-klinkenbuchse-stereo-m-2-spdt-schaltern](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/a/a0aae30baf4977b4a43629f69d5bec5327f1eeb1.jpeg) ---
**Author:** ![Caustic](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/caustic/32/15588_2.png) [@Caustic](https://lookmumnocomputer.discourse.group/u/Caustic)\ **Post date:** [April 5, 2020, 8:27pm UTC](https://lookmumnocomputer.discourse.group/t/1183-1184-quad-vca-bom/460/11 "2020-04-05T20:27:06Z")
Tayda is from Taiwan. I have heard mixed results for imports in Euro. Hope its better in Germany. ---
**Author:** ![fredrik](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/fredrik/32/682_2.png) [@fredrik](https://lookmumnocomputer.discourse.group/u/fredrik)\ **Post date:** [April 5, 2020, 8:29pm UTC](https://lookmumnocomputer.discourse.group/t/1183-1184-quad-vca-bom/460/12 "2020-04-05T20:29:58Z")
Tayda is shipping from Bangkok (i.e. Thailand, not Taiwan) for Europe. I don’t know what the “customs don’t care” threshold is for Germany, but haven’t had any issues in not-Germany. ---
**Author:** ![CTorp](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/ctorp/32/15023_2.png) [@CTorp](https://lookmumnocomputer.discourse.group/u/CTorp)\ **Post date:** [April 5, 2020, 9:26pm UTC](https://lookmumnocomputer.discourse.group/t/1183-1184-quad-vca-bom/460/13 "2020-04-05T21:26:21Z")
Seems like getting anything from EU takes ages to get here in the states. Probably the same vice versa? Meanwhile tayda can deliver parts from Bangkok in 2 days ---
**Author:** ![fredrik](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/fredrik/32/682_2.png) [@fredrik](https://lookmumnocomputer.discourse.group/u/fredrik)\ **Post date:** [April 5, 2020, 10:02pm UTC](https://lookmumnocomputer.discourse.group/t/1183-1184-quad-vca-bom/460/14 "2020-04-05T22:02:45Z")
If you’re in the US, odds are they ship [from Colorado](https://www.taydaelectronics.com/about); shipping from Thailand to Europe might take a couple more days (if using DHL). ---
**Author:** ![analogoutput](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/analogoutput/32/29663_2.png) [@analogoutput](https://lookmumnocomputer.discourse.group/u/analogoutput)\ **Post date:** [April 5, 2020, 10:56pm UTC](https://lookmumnocomputer.discourse.group/t/1183-1184-quad-vca-bom/460/15 "2020-04-05T22:56:02Z")
Yikes, nine terminals? Stereo with double pole switches on both channels, looks like. You could undoubtedly use these, but I think you’d need only pins 3, 4, and 9. ---
**Author:** ![fredrik](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/fredrik/32/682_2.png) [@fredrik](https://lookmumnocomputer.discourse.group/u/fredrik)\ **Post date:** [April 5, 2020, 11:05pm UTC](https://lookmumnocomputer.discourse.group/t/1183-1184-quad-vca-bom/460/16 "2020-04-05T23:05:04Z")
Looks like the [6,3mm Stereo jack with 2 SPDT switches](https://www.musikding.de/63mm-Stereo-jack-with-2-SPDT-switches) which is a bit overkill. They’re cheaper than their (not available) mono jacks, though 🙂 Looking at [what’s available](https://www.musikding.de/Enclosed-Frame) from the musik thingies, maybe [6,3mm Stereo jack](https://www.musikding.de/63mm-Stereo-jack_1) or [6,3mm Stereo jack with switch](https://www.musikding.de/63mm-Stereo-jack-with-switch) could work? (not sure if you need switches or not). ---
**Author:** ![Caustic](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/caustic/32/15588_2.png) [@Caustic](https://lookmumnocomputer.discourse.group/u/Caustic)\ **Post date:** [April 5, 2020, 11:57pm UTC](https://lookmumnocomputer.discourse.group/t/1183-1184-quad-vca-bom/460/17 "2020-04-05T23:57:40Z")
That is the case once it arrives in the US. The info isnt available to me now, but I seem to recall the DHL express tracking showing it ship from Taiwan to China to the States (Colorado). [https://www.taydaelectronics.com/shipmenttracking](https://www.taydaelectronics.com/shipmenttracking) ---
**Author:** ![analogoutput](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/analogoutput/32/29663_2.png) [@analogoutput](https://lookmumnocomputer.discourse.group/u/analogoutput)\ **Post date:** [April 6, 2020, 12:10am UTC](https://lookmumnocomputer.discourse.group/t/1183-1184-quad-vca-bom/460/18 "2020-04-06T00:10:55Z")
They’re headquartered in Thailand. They have a facility in Colorado and all my recent orders have been posted (USPS) from there. Or at least shipping label created there and package marked mailed from there. > Where are we > > Tayda Electronics corporate offices are in Bangkok, Thailand. We also have warehouse, shipping and logistics centers both in Bangkok and in Colorado, USA. Our software developers and various marketing staff are in Durango, Colorado USA. Our Electronics kit testers are in Durango and Bangkok > **[About Us](https://www.taydaelectronics.com/about)** > > Very best parts source for electronics hobbyists. Lowest prices, no minimum quantity on parts, the biggest selection and fast inexpensive shipping. ---
**Author:** ![fredrik](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/fredrik/32/682_2.png) [@fredrik](https://lookmumnocomputer.discourse.group/u/fredrik)\ **Post date:** [April 6, 2020, 12:29am UTC](https://lookmumnocomputer.discourse.group/t/1183-1184-quad-vca-bom/460/19 "2020-04-06T00:29:59Z")
The mail operators they list for _Registered Mail_ has nothing to do with where they are shipping from, though; these actors all compete and the best price for any specific shipment depends on weight, volume, destination, time of day, the phase of the moon, etc, … (ok, maybe exaggerating slightly, but international mail is extremely competitive and involves a lot of actors buying and selling capacity and actors trying to find the cheapest path through that maze, e.g. things like [www.orangeconnex.com](http://www.orangeconnex.com)). (see the link I posted for where Tayda have their physical warehouses.) ---
**Author:** ![Caustic](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/caustic/32/15588_2.png) [@Caustic](https://lookmumnocomputer.discourse.group/u/Caustic)\ **Post date:** [April 6, 2020, 1:05am UTC](https://lookmumnocomputer.discourse.group/t/1183-1184-quad-vca-bom/460/20 "2020-04-06T01:05:28Z")
Im not saying that they dont have warehouses in many places, i was just explaining that i have personal experience that says they do not always ship from those warehouses. I was just trying to say that ymmv because of what the warehouse may have in stock. If there are other reasons thats cool too. 🙂 [Next page](https://lookmumnocomputer.discourse.group/t/1183-1184-quad-vca-bom/460.md?page=2)