ISO9001, ISO14001, IPC-A610F
contact

Testing & Test equipment 

Automated ICT/FCT tests

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.

Selected specifications of the test platform we use for FCT/ICT:

  • USB 5V 500mA 480MHz, 2xRS232/422/485 +-5V 300hZ-1.25MHz, SPI 2.5kHz – 10MHz 1.8V-5V, I2C 56kHz-1MHz;
  • Sine and rectangle generator: 0.6Hz – 150kHz;
  • Supply voltages: 4 programmable: 0-38V(+-) 2x1A and 2×0.4A, 6 unregulated: +5 V, -5 V, +15 V, -15 V, +40 V, -40 V;  
  • 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 tests types:

  • 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.