Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [bom]

Bill Of Materials: The list of components for an assembly. All of the individual parts that go into the manufacturing of a final or sub-assembly.

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Is there a text or markup standard for describing a Bill of Materials?

I'm an electronics newbie, and recently purchased empty PCBs for GoodFET and Ubertooth. While trying to put together an order for all the parts in the bill of materials, I realized I'd very much like to have a computer parseable format I could dump…
shapr
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How to retrieve part information from Digi-Key automatically

How to automatically retrieve, given a Digi-Key part number, information such as Manufacturer, Manufacturer Part Number, Description, etc. Perhaps parsing the GET http respose…
apalopohapa
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What exactly is a "Bill of Materials" (BoM)?

My understanding of a BoM is that it's essentially a list of the various components required for an electronic product or module. Does this mean it could be as simple as a spreadsheet? Are there any formal standards/templates for BoM's citing…
smeeb
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How critical is it to declare the manufacturer part number for a component within the BOM?

I've never seen a BOM that explicitly declares manufacturer part numbers for the components (except the obvious ones, like a microcontroller) in any kind of circuit schematics. According to my knowledge, "if part numbers exactly matches, then…
ceremcem
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How to correctly fill a BOM with split connectors

I have to prepare the documentation for production. In our board we use a specific female header with 6 positions. Long story short, the buyer guys told me we will buy a 64-way connector and then it will be split…
Mark
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LED as Zener: is this a good way to lower the BOM cost?

I had an old AM radio board designed to operate with a 3V CR2032 coin cell. I want to revitalize this old junk with as few parts as possible and convert it into a USB-powered AM radio with a built-in speaker. Parts I have for this project include…
Maxthon Chan
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Need help finding PCB components on DigiKey

I am looking at the TinyDuino Schmatics (PDF) and Eagle BRD/SCH from Tiny-Circuits (an open source project) to put together Bill Of Materials. I am interested in creating my own version of this awesome board; this will be my first PCB. I am not an…
lucidgold
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Quantity less than one on Altium BOM

There are some items that goes on the BOM that, in production, apear as 1 for many. Example: large card box to package 10 boards/products. These kinds of items apear on the BOM as less than one quantity. For the example above, it would be "0.1"…
Sergio
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Where to get a USB type E front panel motherboard header?

I'm designing a product that will need to have USB type C ports on its front panel, and due to physical constraints with the design, I would like to use a USB type E connector in conjunction with a front panel cable (like this one) to accomplish…
AJMansfield
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Designing for Low Cost China Manufacturing

I have designed a few boards on a consulting basis. Some of them have been manufactured in China in +10k unit volumes. One of the complains I have gotten from my clients is my boards can be a bit expensive. (These clients have no real experience…
MadHatter
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Part number suffix meaning (,135 ,115)

When making a BOM I used a component which goes by part number BC847BW,135. It is available on Mouser and Digikey. An "alternative", is listed on Farnell: BC847BW,115 The datasheet doesn't seem to mention what ",135" or ",115" means. I've seen this…
Wesley Lee
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How to find a drop-in-replacement ADC

Sometimes I get a notice from a manufacturer that a part has gone obsolete. I now have to find a new part from a different manufacturer to put on the BOM. For a resistor or capacitor, it is pretty easy to look up the value, tolerance, temperature…
Robert Deml
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What kind of patterns are used to mark a PCB?

I would like to create a pattern for my PCB. I would like to update the pattern with changes in BOM, external interface, software, changes in pads. I would like some suggestions of patterns used in pcb design.
Tania Lazaro Izquierdo
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Reduce BOM Lines or reduce BOM cost? How to make production cheaper?

We are designing a product that will hopefully sell many thousand units, and now I am at the stage of specifying what parts to use. We require three inter-board connectors, one with 10contacts and two with 4 contacts. Instead of using two different…
SonderEng
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Best practice for wire harnesses in a BOM

Ive started a new job at a startup and am working on a BOM for a box build with a couple of PCBs and wire harnesses inside. Im in a bit of an impasse about how best to define wire harnesses in the BOM. In my previous job, we made standalone PCBs for…
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