500 Card Edge in KiCad?
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TO-92 is a standard package size and is definitively already in the Kicad standard footprint library.
Find footprints and symbols here.
https://www.snapeda.com/https://componentsearchengine.com/library/kicadhttps://www.ultralibrarian.com/Are in mouser or digikey they have links to symbol and footprints on the part pages.
https://www.snapeda.com/https://componentsearchengine.com/library/kicadhttps://www.ultralibrarian.com/Are in mouser or digikey they have links to symbol and footprints on the part pages.
john12ax7
Well-known member
I would recommend learning how to make your own. It's very useful for pcb design.
A 2N7000 symbol in the transistors_FET schematic symbols has TO-92-Inline as the footprint.
Looking at the symbol details that footprint is in Package_TO_SOT_THT library. There is a series of TO-92 footprints for inline, staggered, leads bent with body on PCB, etc.
@ ccaudle: great! I try to remember the word "package" in the future. Lots of options there.
We don't have to invent the warm water. For more special items I will look at the mouser pages.
Is there also a footprint for capacitors with multiple sizes? Lets say in one spot you will give the option to use 7,5mm or 5mm electrolytics later?
We don't have to invent the warm water. For more special items I will look at the mouser pages.
Is there also a footprint for capacitors with multiple sizes? Lets say in one spot you will give the option to use 7,5mm or 5mm electrolytics later?
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The usual way to handle that (in other programs I have used) is to put two capacitors in the schematic, connected in parallel, with different footprints. In the layout put the footprints one on top of the other so that only one can be installed. If you use automated bill of material processing you will probably need an attribute in the schematic symbols indicating which should be installed and which should not be installed.
I do not know if KiCAD may have a way to indicate a dual footprint, but the old way of just including two parts and manually placing them in the same location seems easy enough.
MidnightArrakis
Well-known member
[Is there also a footprint for capacitors with multiple sizes?] -- In the early days of CAD PCB-design, I worked at an "RF" company that designed custom equipment for "covert" U.S. Government agencies. Due to the nature of the "RF" circuits, some of the capacitors that -- could -- be used in certain sections of the circuitry could be any "one" of "four" different sizes!!! Instead of using the technique that Ccaudle has suggested (which is a perfectly fine way of doing things), I used to create custom PCB-footprints that had 5 pins.....1 as a "Common" and the other 4 spaced-out as necessary for each of the different sizes. The schematic would then only show a single capacitor symbol and it would only have a single PCB-footprint. Then, the schematic would have a "NOTES" Reference Number next to the symbol which would provide the necessary information as to which value and type of capacitor would need to be used for each different situation.
[is there an easy way to copy the pcb layout to make it stereo?] -- It would depend upon -- HOW -- you want a "stereo" unit to be. 1) You can either have two separate channel electronics within a single enclosure and each channel has its own set of controls, switches and knobs, or 2) You can use two separate channels of electronics, but instead use "Dual" control pots and switches, so there is only one set of pots, switches and knobs, or 3) You can use a single set of pots, switches and knobs to control both channels of electronics, providing that there is some manner in which to have a "Stereo-Link" connection or control voltage between the two channels.
From there.....you would then need to modify the schematic accordingly and then update the schematic "Annotations" (i.e., all of the Reference Designators) and output a new set of GERBER and N/C Drill data files. Your call.....
I once created a "Stereo" ALLISON Research "Gain-Brain" Compressor/Limiter in a 1U rack-chassis back in 1977 by mounting two separate PCB's into the chassis and tying them together using a provided "Stereo Link" pin on each PCB controlled by a switch. Once the two separate PCB's were connected together using the "Stereo Link" connection, the "Left-Channel" pots controlled both channels together, just like as my DBX166XL operates.
Personally.....I would decide and select on one of the above methodologies and create a single PCB that has both channels on it. But, that's just me.....
/
The unit will have 8 separate compressors (for convenance I said stereo) all the linking is there on the mono pcb on the left and right side of the pcb . The idea was to design one channel and than copy paste the other channels.
Unfortunately this doesn't work as planned. As it took me 2 days to design I don't want to redo the work several times.
The gain brain is a great compressor. I have always at least one in use.
Unfortunately this doesn't work as planned. As it took me 2 days to design I don't want to redo the work several times.
The gain brain is a great compressor. I have always at least one in use.
PCB's are usually manufactured on 18"x24" panels, then cut apart after manufacture. If you work with your board supplier you might be able to get groups of 8 channels arranged in a way that they can be used without cutting apart.
Hi
i know it s an old post but maybe someone can still help me
working on my first 500 board so i m very confused about pcb shape and dimensions specially at pin connector part
used Mihi template, that of course is fine cuase is mounted into edge connector, to compare with another shape i found online that i m running on kicad and here the connector has a different edge/cut.... can i use it anyway or have to fix the board?
i don t own a LunchBox just want to use the pcb with edac connector and fit 2 ch into 1U rack for easy to remove and upgrade any time i need... but maybe one day i like to use it into Api style one
in Api500 template there s also more room for components !
any explanation could be very useful
thanks for your attention
best
i know it s an old post but maybe someone can still help me
working on my first 500 board so i m very confused about pcb shape and dimensions specially at pin connector part
used Mihi template, that of course is fine cuase is mounted into edge connector, to compare with another shape i found online that i m running on kicad and here the connector has a different edge/cut.... can i use it anyway or have to fix the board?
i don t own a LunchBox just want to use the pcb with edac connector and fit 2 ch into 1U rack for easy to remove and upgrade any time i need... but maybe one day i like to use it into Api style one
in Api500 template there s also more room for components !
any explanation could be very useful
thanks for your attention
best
Did you see my post here? 500 VPR Style PCB Fabrication
My template. There is no real industry standard. One designer will be different from the next. All that matters is will it fit. There are guidelines in the edac pdf. At least 8mm card edge. I believe I went with 9mm. Radial I believe has a 10mm edge. Depending if you are using a sled you have to adjust length of board to compensate for depth of L shaped bracket. Typical 6mm or 1/4" standoffs or used. I personally go with a 38mm front panel instead of api recommended 38.1. Just don't go wider or you will have compatibility issues. Here is some helpful info.
My template. There is no real industry standard. One designer will be different from the next. All that matters is will it fit. There are guidelines in the edac pdf. At least 8mm card edge. I believe I went with 9mm. Radial I believe has a 10mm edge. Depending if you are using a sled you have to adjust length of board to compensate for depth of L shaped bracket. Typical 6mm or 1/4" standoffs or used. I personally go with a 38mm front panel instead of api recommended 38.1. Just don't go wider or you will have compatibility issues. Here is some helpful info.
My board setup template. I use 2mm trace for power top or bottom copper plane. 0.5mm componet traces top or bottom. I'll choose one side like you said to run power the other side for connections. Obviously, depending on componet layout it is impossible to get all connections on one copper plane. In which case I'll use the other side. I use ground pours on both sides set .5 mm from edge cuts. Any mechanical thru holes on the board for switches are pots make them as big as possible for better durability. ENIG surface finish the card edge connector if possible if it will be removed and inserted repeatedly for durability compared to HASL finish.
