Sometimes customers are unclear about the difference between fixture bed of nails vs.
Pcb electrical test flying probe.
Electrical test at pcbgogo with the pcb designs become more complex and smaller the need for e test becomes more critical.
Electrical probes located on each head make contact and test device vias and leads on the board to provide sequential access to the test points.
Depending on moving probes to test electrical performance of each net on a bare circuit board flying probe tester is actually an upgrading version of bed of nails tester.
And we only charge one time on e test fixture cost but flying probe e test need re charge in all orders.
Four to eight test heads move across the pcb under test at high speed.
This e test rule is applied in fr4 pcb flex circuit and rigid flex pcb and mcpcb.
For short runs the flexibility of quick set up ensures cost effective flying probe tests outperform the lead time cost and fixed designs of dedicated test beds.
Flying probe can be performed without an expensive fixture as mentioned above.
A traditional bed of nails tester for testing a pcb requires a custom fixture to hold the pcba and the pogo pins which make contact with the pcba.
This very reliable method of testing involves the use of a flying probe test sequence which probes the board at high speeds looking for shorts and openings throughout the board.
In the testing of printed circuit boards a flying probe test or fixtureless in circuit test fict system may be used for testing low to mid volume production prototypes and boards that present accessibility problems.
Pcb electrical testing types.
Pcb manufacturing facilities routinely perform electrical testing with flying probe testers which are well suited to smaller production runs.
With fixtures replaced by probes that can move at a high speed the min test pitch of a flying probe tester can be as small as 0 2mm.
Flying probe testing as well as the costs associated with them.
The significant market share that flying probe testers have conquered over the years is beyond all doubt due.
The flying probe testers originally evolved for use only for bare board testing and they have become the de facto standard for bare boards testing which involves testing for shorts opens etc.
In spite of the disadvantages mentioned flying probe test is still regarded as a significant test method as far as pcb fabrication and pcb assembly are concerned and will always play a crucial role in leading electronic products to excellent performance and high reliability.
