Reedholm dc test systems are used by a large number of GaAs and other compound semiconductor foundries in a variety of roles. These systems are used by both manufacturing and engineering departments. They offer a high degree of automation in the area of data acquisition, as well as providing network access allowing engineers to work more efficiently.
The following applications descriptions illustrate how our measurement tools might be used in your operation. For each, requirements unique to high gain and high power devices have been addressed:
Sensitivity to Damage – Special instrumentation power-up and power-down sequencing is incorporated in the test code.
Propensity to Oscillate – While needing to be solved at the test fixture, the analog cables and probe cards provided have proven to be well suited for the addition of ferr-magnetic mats, ferrite beads, and/or discrete components for the reduction of transistor oscillation.
Possibility of Self-heating – High current instrumentation beyond the standard 550mA is available, providing extensions for both 5A and 50A requirements. Pulsed measurement techniques also help prevent excessive heating.
Reedholm’s test executive software is designed for automated semiconductor parametric testing. It provides a complete solution, along with an easy to use UI. All test routines are built in, so code development is not necessary, but is available. Everything is stored (test plans, conditions, results) in a single database hosted on a current, networked, fully supported version of SQL server.
This data driven software environment makes programming optional. Many find the use of standardized test types leads to better data and faster test times, resulting in more actionable data with as much as 3.9x more throughput compared to other legacy systems.
The file based formats of the 1980’s eventually became the RDS Intranet versions of the new century. The offering was expanded to include an SQL database and simplification of the editing process from the original “Q&A” test plan creation process to one of filling in cells for a given test type.
With system lifespans spanning decades, it can be a challenge to know what calibration accessories were delivered with the tool. So that you can repopulate the tool kit, Reedholm Systems offers a number of calibration accessories that can be used to keep the test systems online and running correctly.
Instrument calibration is a process of adjusting and/or verifying that it is operating within specified limits of accuracy. This is accomplished by formal comparison or adjustment to a reference standard whose limits of accuracy can be traced to the National Institute of Standards and Technology.
In production, “set and forget” adjustments of potentiometers, variable inductors, and variable capacitors are made to bring a module within published specifica- tions. Afterwards, automatic calibration software is used to compensate for offset and scale factor errors. Manual calibration is not needed unless a precision component (op amp, A/D or D/A converter, reference amplifier, wire-wound resistor, etc.) is replaced.
Message from the CEO:
Believe it or not, it looks like in person conferences are happening again! It remains our hope that folks will find there way to Monterey, CA for the upcoming CS Mantech in May 2022.
On the Reedholm side, we’ve got three things to share:
Proven production parametric test systems for GaAs and silicon requirements, and the power (up to 10kV/50A) needed for WBG devices.
A complete modernization of the legacy Reedholm Intranet software, updated and improved to be a Windows application. This update became particularly timely with Microsoft’s recent announcement about long term support for IE, which we migrate away from in WIN 2.0.
A new hardware system that eliminates parasitic cabling while eliminating the footprint of the system.
At the conference, we will be joined by a couple of affiliate’s:
DR YIELD, who will be demonstrating their advanced yield management software offerings and
Suragus, who specialize in non contact measurement systems.
Both are well experienced in addressing the needs of compound semiconductor manufacturing.
Please contact us at [email protected] if you would like to talk to someone about your requirements. We look forward to hearing from you.
Jim Reedholm – CEO
CS Mantech – Booth 67 Monterey Marriott 350 Calle Principal Monterey, CA 93940 May 9-12, 2022