Saving up to 80% of the time needed to test a product is the advantage of ICT-FCT testing. ICT-FCT tests cover electrical circuit tests, but also functional tests.
At JM elektronik we have the expertise to develop the tests ourselves as well as the required tools: adapters (fixtures, “bed of nails“) that transmit electrical signals to the PCB in order to check the presence and value of the components assembled 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 our customers appreciate when mounted electronics assemblies undergo electrical tests. We often build functional testers. In addition to the standard universal platform typically connected by test points and a bed of nails, we use customer-supplied testers or we build test systems that perform individual test procedures.
Automatic test systems
Development of automatic test systems is a natural extension of our competences related to providing our customers with the highest quality.
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’s process team develops documentation that clearly describes the requirements for THT assembly, especially covering manual assembly.
The most experienced employees, the leaders, take care of the whole process, including training of employees in reading the documentation, introduction of products new to the assembler and visual inspection 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
Despite making best efforts for correct paste application, high precision of component placement on a PCB and precise temperature control in reflow oven, a NOK board may be assembled.
We use SPI in the solder paste application control process at JM elektronik – a tool that enables automatic 3D inspection of the PCB solder paste volume.
After surface mount assembly, we use post reflow automated optical inspection (AOI), which detects rotation, polarity, bridging, missing components, among others – and also performs measurement and inspection in the 3D to detect raised leads, raised components, and tombstone effects for chip-type components.
Integrated Quality and Environmental Management System
Here at JM elektronik, we pay crucial attention to quality in its broadest sense. We work according to an integrated quality management system that is based on ISO 9001:2015 standards and an environmental management system based on ISO 14001:2015 standards.
IPC Standards
In order to ensure quality in the assembly process, we run regular training sessions for our employees on important aspects of our business. In particular, the trainings are related to ESD protection in the production process, knowledge of industry standards related to the processes we perform. The assembly and quality control employees have IPC certificates confirming their knowledge of the IPC-A-610 standard which defines the quality standards for the assembly of electronic circuits.
We are a member of IPC organisation, which deals with standardisation of assembly and production requirements for electronic equipment.
Best practices and industry standards
The production processes are carried out in accordance with the relevant industry standards, best industry technical practices and our own expertise. The entire production area is protected against electrostatic charges (ESD). In addition to ESD protection, electronic components often need to be stored under suitable environmental conditions. We ensure controlled temperature and humidity.
Moreover, we apply in practice the best developed principles in accordance with 8D, FPA, PPAP, 5xWHY or Ishikawa.
We strive to trigger the potential of Lean Manufacturing in our employees to continuously improve the productivity of processes with special attention to quality.
“Our traceability system allows us to record the history of each and every product we produce. It allows us to analyse the material mix, the assembly operations performed, the quality control results. Just in case…”
Sort, Set in Order, Shine, Standardize, Sustain – the 5 elements that make up the 5S method that we have implemented in our production plant.
Introduction of the 5S technique is aimed at reducing waste, managing quality, enhancing organisational performance, as well as improving processes and eliminating those that do not add value to the product (or service).
5S also helps to increase the employees’ responsibility for the tools, activities and processes related to their work station.
