Resistors and capacitors 01005 measurement of value

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I want to know how you measure capacitance and resistance to... - Jan 29, 2019 by Panaguru

There's always flying probe, although it's not particularly ... - Jan 29, 2019 by Steve Thomas

First, you cannot measure capacitors once they are soldered ... - Jan 29, 2019 by DeanM

I'm with Steve and flying probing. As long as you are testi... - Jan 30, 2019 by Robl

We measure each first board before the oven after every chag... - Jan 30, 2019 by Panaguru

Panaguru

#81832

Resistors and capacitors 01005 measurement of value | 29 January, 2019

I want to know how you measure capacitance and resistance to 01005 components?Is there such a machine for automatic measurement of component values on PCB? We have a lot 01005 components and we lose time to measure first panel components...I'm interested in how you are doing?

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Steve Thomas

#81835

Resistors and capacitors 01005 measurement of value | 29 January, 2019

There's always flying probe, although it's not particularly cheap.

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DeanM

#81837

Resistors and capacitors 01005 measurement of value | 29 January, 2019

First, you cannot measure capacitors once they are soldered onto the board. Second, why must you measure? Verify your machine set up by using intelligent feeders (if your machine has them) or a checklist, preferably by two people. If you cannot trust that the vendor put the correct value on the reel (it ca happen), then measure the first piece on each new reel using an LCR meter and mark that reel as Verified.

This in conjunction with AOI, ATE, or functional test, you should be able to assure your product.

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Robl

#81841

Resistors and capacitors 01005 measurement of value | 30 January, 2019

I'm with Steve and flying probing. As long as you are testing the capacitance of the cap in the circuit and not of the cap itself you'll get a pretty good indication. Most are going to be 10nf and 100nf decoupling caps at that size so quite easy to work out.

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Panaguru

#81843

Resistors and capacitors 01005 measurement of value | 30 January, 2019

We measure each first board before the oven after every chageover...Assembling one offset and measure component, after we clear plate...We have reason why do that...But we're wasting a lot of time.So I wanted to see how you do it. Thank you for answers.

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