Questions tagged [production]
The production tag has no usage guidance.
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Production programming: is there a practical size limit to serialization length? [closed]
This is a follow on question from the answers of these two:
Is it practical for firmware to be uniquely identified in production
How to verify hardware is legitimate
I would like to be able to ...
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Why do PNP silicon transistors cost more to produce? NPN is cheaper?
I got a few suggestions/answers but nothing definite after searching and digging around awhile .. I am not so sure about any of these so correct any of them that you see
Thanks
Alex Van den ...
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Term for a guarantee a manufacture makes that a product will be produced for a number of years?
Sometimes manufactures of electrical components guarantees that a product will be produced for a number of years so you can rely on getting new components for future production runs. What is the term ...
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How are through-hole boards mass-produced?
I'm familiar with the manufacturing process of surface mount boards. Chips come on reels (very high volume smaller parts), trays, or tubes. They are loaded into pick-n-place machines. The PCB, with ...
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Advantage of series vs parallel battery in handheld product
There are many handheld product like laptop or an Handheld measurement equipment that all parts would works fine with 3.3V or lower VCC. However these devices still comes with a 11.1ٰV battery or ...
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Why are EI-cores (shell-type) most common for power transformers?
I notice that most small power transformers (single-phase, 100-240V, 50hz/60hz, laminated core) are shell-type, with an EI-shaped core. But as I understand they have relatively low efficiency due to ...
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60335-1 27.5 Test - Am I doing this right?
I work at company producing household appliances, and I'm looking into a way to test compliance with part 27.5 of the NEN-EN-IEC 60335-1 standard (which is derived from IEC 60335-1).
It states (...
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Estimating Assembly costs II
This is a continuation of Estimating Assembly Cost which has addressed some approximations in estimating between North American and Asian assembly houses as price per pin.
The question does not ...
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Serial programming of several AVR microcontrollers simultaneously via ISP interface
I'd like to put several PCBs in a panel with only one ISP connector routed to each MCU in parallel.
I hope that it will be no problem that many MCU's outputs will be connected together as it is ...
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Chip masking process...what can be changed during the process?
I'm working with an overseas vendor.
We've tested the electronics and code of the product. We gave them the green light to start chip masking. However, a few days later we realized that the working ...
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Why don't I see the esp8266 chip in many commercial products? [closed]
I am a bit of a novice in the field of RF design, and I was looking around for an RF module to use in a project. I kept on noticing the ESP8266, which is pretty popular with hobbyists, but it's ...
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What connectors are best for mass production? Is it cheaper to not use connectors at all?
I'm in the middle of designing a circuit with hopes of going to mass production (> 5000 units). I'm trying to think ahead in my part selection a little bit for reliability and cost effectiveness. My ...
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How to prevent sealed in product battery drain on store shelf?
How can a microcontroller-based device prevent battery drain while the product is on the store shelf? We are creating a waterproof, sealed in product without any buttons. This means the battery is ...
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Baking 0603 Components
I have a few 0603 LEDs that come with the instruction to bake them if they had the chance to draw moisture. What is the best way to do that?
Can I leave them in the tape, so I don't lose the ...
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Reliability of edge connectors for production
I'm looking for an 6 pin .1 standard edge connector to program for production my board without any connector. And I cannot find the number of cycle they can support.
Does anyone has used such ...
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