White Papers - Tips and Techniques

White Papers - Tips and Techniques

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Socketless Probes Utilize a Small Base Socket

What is Testability?

Circuit Board Design Files.

Socketless Probes Utilize a Small Base Socket

What is Testability?

Circuit Board Design Files.

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Technical Papers and innovative applications ideas.

Base Socketed Probes

As the size of circuit boards continues to shrink, the demand grows for smaller probes to use on 0.075", 0.050", and even 0.039" centers. Smaller-diameter probes, however, are not only costly to manufacture, they also are less robust, easier to damage, harder to maintain, and tend to need replacing more often than larger probes, all of which drive up test costs. Smaller probes also offer fewer tip-style and spring-force options.

Testability

Testability can best be described as the ease with which the functionality of any electronic product circuit or component can be determined to a desired degree of accuracy. To put it more simply, how easily can it be checked for performance to-spec throughout the entire product life cycle from product concept through design, manufacture, and service? How quickly can test programs be generated? How accessible are the test points? How comprehensive is the fault coverage?

Design for Testability

If possible, have your designer create a layer in the circuit board design files for test points and tooling pins. This will allow the creation of a DXF file specifically for the test pads and tooling pins. Example: file name of test.dxf. Although this is not necessary, it helps speed fixture design and reduce costs and the potential for fixture fabrication error.

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	Lever Latch		Panel Inserts
	Microcontroller		Mid Carrier Plate
	HV Shield		RF Shield

Pallet Material Antistatic / Reflectivity:
	No Carbon White	HighCarbon Black	Med Carbon Grey
Material Thickness:
	3mm	5mm
Hold Down Mechanism:
	None	SwivelLatch	TensionPins
Durability Until Delamination:
	12 Thousand	25 Thousand	50 Thousand
12K Cycles = 6 months at 100 cycles/day 25K Cycles = 1 year at 100 cycles/day 50K Cycles = 2 years at 100 cycles/day

Pallet Material Durability:
	Aluminum	Stainless	Titanium
Material Thickness:
	0.0625inch	0.090inch	0.125inch
Hold Down Mechanism:
	None	SwivelLatch	TensionPins

Pallet Material Conductivity:
	No Carbon NonConductive	Silicon Carbide Semiconductive
Material Thickness:
	2mm	3mm
Durability from Stress Pulveration Fractures:
	1 Million	1.2 Million	2 Million
1M Cycles Standard HS Machining 1.2M Cycles Bead Polished Finish 2M Cycles Polish & Heat Temper Treatment