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Forum: PCB Design & Technology Bed of Nails Tester


Author: PCB P. (Company: ALLPCB) (pcbassembly)
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A bed of nails checker may be a ancient electronic check fixture that 
has various pins inserted into holes in AN epoxy phenolic resin glass 
fabric laminated sheet (G-10) that square measure aligned victimisation 
tooling pins to form contact with test points on a computer circuit 
board and also are connected to a unit of measurement by wires. Named by 
analogy with a real-world bed of nails, these devices contain AN array 
of tiny, elastic device pogo pins; every pogo pin makes contact with one 
node within the electronic equipment of the DUT (device beneath test). 
By pressing the DUT down against the bed of nails, reliable contact may 
be quickly and at the same time created with a whole bunch or perhaps 
thousands of individual check points at intervals the electronic 
equipment of the DUT. The restriction force is also provided manually or 
by suggests that of a vacuum or a mechanical presser, so propulsion the 
DUT downward onto the nails.
Bed-of-Nails check itself because of the limitation of principle and 
technique, featured with severe technological challenges. however as I 
delineated on top of, there still has benefits different strategies 
don’t have. With the utilization of recent and improved technology and 
fixture technology, it'll even have robust vitality within the field of 
electrical testing.

https://www.allpcb.com/bed_of_nails_test.html?code=P9

: Moved by Moderator
Author: PCB P. (Company: ALLPCB) (pcbassembly)
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The thickness of a printed circuit board (PCB) can influence the 
performance and practicality of the board. counting on what your needs 
area unit for your PCB, can verify what thickness utmost suits you.

But not all PCB’s area unit identical. several variables inherit play 
once building a PCB. The thickness of the board is one in every of those 
essential variables. once electing the amount of thickness you would 
like, you want to take into account not simply the perform of the PCB, 
however the profile, weight, assembly parts and specifications of the 
parts additionally. All of those factors contribute to the performance 
of the PCB additionally because the thickness level.

The maximum thickness of a finished computer circuit board may be 
determined by measurement it from copper to copper. most thickness of a 
PCB plays a very important role within the fabrication of a printed 
circuit. the utmost finished PCB thickness determines the stack heights 
for the aim of drilling and identification, the ratio, additionally 
because the permanent limits of producing instrumentality for process. 
Thickness of solder mask ought to be thought of, whereas shrewd the 
whole thickness. the whole thickness of a PCB is between zero.5 mm 
(0.020 inches) to six.85 mm (0.270 inches). we offer PCBs with finished 
thickness zero.008″ - 0.275″ (0.2mm- 7mm).

https://www.allpcb.com/pcb_board_thickness.html?code=P9

Author: PCB P. (Company: ALLPCB) (pcbassembly)
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This is a comparison of printed circuit board design software. Our 
criteria for as well as a PCB CAD program are:
There ought to be a version accessible at no cost (no money).
The free version shouldn't be time restricted, i.e. you ought to be 
ready to use the package indefinitely without having to purchase it.
The free version ought to offer schematic and board style and will 
generate some type of output that may be accustomed manufacture boards.
The package ought to be actively developed and supported.

https://www.allpcb.com/software/P9

Author: Lothar M. (lkmiller) (Moderator)
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PCB P. wrote:
> we offer PCBs with finished thickness zero.008″ - 0.275″ (0.2mm- 7mm).
For advertising pls contact the webmaster.

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