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Fixtureless In-circuit TestFixtureless In-Circuit Test (FICT) is a cost-effective option for in-circuit testing of low to medium volumes of printed integrated circuit assemblies. Traditional "bed of nails" testers require the manufacture of a fixture comprising pins inserted into holes in a perspex plate connected to the measuring unit by wires. The number of wires used will often increase the capacitance of the circuit so that values below 60pf are difficult to measure. Also, the holes in the perspex do not allow pins to be close enough together to test fine pitch components with a lead pitch of 0.5mm unless test pads or vias allow connection from another part of the circuit. Typically, 4 to 6 weeks need to be allowed for the manufacture and programming of such a fixture unless premium payments are made. Fixtureless In-Circuit Test (FICT) does not suffer from any of these drawbacks and, in combination with Fabmaster smart software, STI can be testing a new board on the Takaya tester within hours for a low complexity design and within a few days for the most complex. Key features - Automatic optical inspection for presence of components, polarity, letters or numbers on ICs.
- Value measurements on resistors, capacitors, zener diodes and inductors.
- IC Opens checker finds lifted legs / dry joints on ICs.
- Testing of fine pitch to 0.3mm with a repeatable accuracy of probe placement of +/- 0.05mm.
- Test programme prepared from pcb cad data.
*All major cad platforms supported.
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