Power Semiconductor Testing System
LEMSYS is a leading supplier of Test Equipment and associated Services for Power Semiconductors discrete devices and modules.

LEMSYS activity is focused on Power Semiconductor Test Equipment for Component Manufacturers, Power Electronics OEM Manufacturers and End users.

.. We have a wide range of testers for all kind of components for measuring static and/or dynamic parameters, from a few Amps and Volts up to several thousand Volts and Ampere. New generation equipments are equipped for allowing remote software upgradation and diagnosis. LEMSYS also provides worldwide technical assistance and service. LEMSYS is certified ISO 9001 and delivers equipment in accordance with IEC & CE standards.

Over 1000 Equipment (LEM & LEMSYS) have been installed all over Europe, as well as in Australia, Brazil, China, India, Japan, Korea, Morocco, Malaysia, Mexico, Philippines, Taiwan and USA.

Applications:
Designed for testing of Static and Dynamic parameters of Diodes, SCRs, IGBT, GTO and Power BJTs and MOSFETs.
Also available service testers for above devices for application in
• Public Transportation:
  Maintenance and repair shops, Trains, Underground, Trolley-busses, Tramways, Ship, and others.
• Heavy industry using rectifiers and converters :
  Steel mills, mines, aluminium plants, galvanic-plastic and chlorine industry.
• Power electronics manufacturers:
  Drive, converter-inverter manufacturers, Repair shops (after sales), R & D.

Various Products of LEMSYS SA are :

• IGBT- MOSFET Power Modules ipm
For testing switching characteristics of IGBT up to 2000A and 3000V

• Lemsys PRO
LEMSYS pro modules for limited testing applications to be integrated into specific test environment for Modules or discrete devices.
Tests: Forward Vge Drop, Blocking Vge, Leakage Current and gate characteristics
Current: 2 – 1000A
Voltage: 20 – 2200V (0.1 – 100mA)

• Rectifiers – Thyristors – GTO – Triacs
It is designed a full range of power test equipment to satisfy the different customer's needs, for laboratory, production and maintenance.
Tests for Rectifiers: Vf, Vr, Ir, Qrr, Qra, Irr, trr, Sfactor,
dI/dt Current: up to 10000A
Voltage: up to 10000V
Tests for Thyristors: Vt, Vd, Vr, Id, Ir, Igt, Vgt, IH, IL, Tq, dV/dt, Qrr, Qra, Irr, trr
Tests for GTO: Vt, Vd, Vr, Id, Ir, tgd, tgr, tdq, tfq, tz, Izm, Vdp, Vdm, Eon, Eoff
Tests for Triacs: Commutating dV/dt, Commutating di/dt, Current drive capability,

• For Fast diodes
Diode Measuring System (DMS) Soft recovery, Snap off, voltage overshoot, and the fast diode is the key to the performance of the final equipment. The Lemsys DMS has been designed for finding the most suitable diode, meeting customer needs and satisfying a particular application. Made for testing dynamic parameters of fast recovery diodes either in compliance to the standards or close to their working conditions.
Fast diodes tests: trr, trra, Qrr, Qra, Turn-on, tfr
Current: 0.1 up to 300A
di/dt: 5 up to 500A/µs
Vr voltage: 5 up to 400V

• Portable Test Equipment
Portable Test Equipment The portable tester TP0620 is designed for easy and fast functional control of the major power semiconductors in the lab or on site (IGBT, MOSFET, diodes, Thyristors and other components).
Tests: Breakdown voltage, leakage current, forward voltage drop
Current: 3 to 600A
Voltage: 50 to 2000V
Gate: 15V – 200mA

• Test Generator
Strap Power supply source for EMC testing, AC mains LF disturbance simulator, Impulse current and voltage power generators. Test equipment for current sensors.

• Connecting Devices / Press System
Test Block for Power Modules and specific adapters for easy contacting and testing. Press, adaptors, heating systems and other devices to facilitate the physical handling of semiconductors to be measured. These systems are complementary or incorporated to test equipment.
Press: applied force from 1 up to 120KN (for presspack semiconductors)
Temperature: from ambient temperature to 200°C
Package: Presspack, power modules, stud or discrete devices

For more details about LEMSYS SA, Switzerland, products please visit their website www.lemsys.com