Savingup to 80% of the timeneeded to test a productis the advantage of ICT-FCT testing. ICT-FCT testscoverelectricalcircuittests, but alsofunctionaltests.
At JM elektronik we have the expertise to develop the testsourselves as well as the requiredtools: adapters (fixtures, “bed of nails“) thattransmitelectricalsignals to the PCB in order to check the presence and value of the componentsassembled in the product, and to read the response to the given test sequences.
Selectedspecifications of the test platform we use for FCT/ICT:
Up to 280 channels for ICT testing=max. number of needles (test points) 280,
*possibility to extend the number of channels for ICT tests up to 1400;
Current and voltage measurement.
ICT teststypes:
Tests of the track integrity on the pcb;
Track isolation test;
Resistance measurement: 0-40M Ohm, accuracy: from 5% to 0.5%;
Capacitance measurement: 1 pF-10mF;
Zener diode measurement 2V-25V;
Transistor measurement 0-10V;
Inductance measurement: 4uH-2H tolerance 5%;
Polarity check of axial, radial, miniature smd, tantalum capacitors;
Verification of correct connectors mounting;
Measurement of operational amplifiers 0-10V 0-100mA;
Measurement of thyristors;
Relays testing;
Optocouplers measurement;
Measurement of DC current and voltage values: 100m(A)(V) – 100(A)(V) tolerance 0.1% – 0.05%;
Measurement of alternating current and voltage values: 70m(A)(V)-70(A)(V) tolerance 0.35% – 5%;
Adjustable load 0-40A max 50V;
Testing of data buses.
Automated test systems
Either we and ourcustomersappreciatewhenmountedelectronicsassembliesundergoelectricaltests. We oftenbuildfunctionaltesters. In addition to the standard universal platform typicallyconnected by test points and a bed of nails, we usecustomer-suppliedtestersor we build test systemsthatperformindividual test procedures.
Automatic test systems
Development of automatic test systemsis a naturalextension of ourcompetencesrelated to providingourcustomers with the highestquality.
Our team of process development engineers develop complete automatic testing systems for end products on behalf of our customers, using
mechanical components;
pneumatic automated circuits simulating human finger operation;
electronic systems simulating interaction with external circuits;
AI solutions for reading the display content;
development of complete testing software;
development of methods for recording test results in an electronic archive;
development of methods for marking the product with the test number together with the specification of the tester and the testing software.
In-process control of THT assembly
JM elektronik’sprocess team developsdocumentationthatclearlydescribes the requirements for THT assembly, especiallycovering manual assembly.
The most experiencedemployees, the leaders, takecare of the wholeprocess, includingtraining of employees in reading the documentation, introduction of products new to the assembler and visualinspection to ensure the correctness of operation.
Traceablility
We have introduced traceability support in the company, a system solution supported by software, so that particular component deliveries, particular stages of assembly and tests are registered from the beginning of the production process.
SPI and AOI 3D
Despitemakingbestefforts for correctpasteapplication, high precision of component placement on a PCB and precisetemperaturecontrol in reflowoven, a NOK boardmay be assembled.
We use SPI in the solderpasteapplicationcontrolprocessat JM elektronik – a toolthatenables automatic 3D inspection of the PCB solderpastevolume.
Aftersurfacemountassembly, we use post reflowautomatedopticalinspection (AOI), whichdetectsrotation, polarity, bridging, missing components, amongothers – and alsoperformsmeasurement and inspection in the 3D to detectraisedleads, raisedcomponents, and tombstoneeffects for chip-typecomponents.
IntegratedQuality and Environmental Management System
Here at JM elektronik, we paycrucialattention to quality in itsbroadestsense. We workaccording to anintegratedquality management system thatisbased on ISO 9001:2015 standards and anenvironmental management system based on ISO 14001:2015 standards.
IPC Standards
In order to ensurequality in the assemblyprocess, we run regulartrainingsessions for ouremployees on importantaspects of our business. In particular, the trainingsarerelated to ESD protection in the productionprocess, knowledge of industrystandardsrelated to the processes we perform. The assembly and qualitycontrolemployeeshave IPC certificatesconfirmingtheirknowledge of the IPC-A-610 standard whichdefines the qualitystandards for the assembly of electroniccircuits.
We are a member of IPC organisation, whichdeals with standardisation of assembly and productionrequirements for electronicequipment.