THERM-A-GAP™ GEL 50VT Reliability Report
TR 57988 May 2023
Chomerics Division of Parker Hannifin
77 Dragon Court
Woburn, MA 01888
(724) 771-7156
WARNING – USER RESPONSIBILITY
FAILURE OR IMPROPER SELECTION OR IMPROPER USE OF THE PRODUCTS DESCRIBED HEREIN OR
RELATED ITEMS CAN CAUSE DEATH, PERSONAL INJURY AND PROPERTY DAMAGE.
This document and other information from Parker-Hannifin Corporation, its subsidiaries and authorized
distributors provide product or system options for further investigation by users having technical expertise.
The user, through its own analysis and testing, is solely responsible for making the final selection of the system
and components and assuring that all performance, endurance, maintenance, safety and warning requirements of
the application are met. The user must analyze all aspects of the application, follow applicable industry standards,
and follow the information concerning the product in the current product catalog and in any other materials
provided from Parker or its subsidiaries or authorized distributors. To the extent that Parker or its subsidiar
ies or
authorized distributors provide component or system options based upon data or specifications provided by the
user, the user is responsible for determining that such data and specifications are suitable and sufficient for all
applications and reasonably foreseeable uses of the components or systems.
TR57988 May 2023
Executive Summary
THERM-A-GAP™ GEL 50VT is a high performance, one-component, silicone, dispensable
thermal interface gel material with 5.2 W/m-K thermal conductivity. It was developed to
conduct heat from electronics to heat sinks or enclosures and perform reliably in vertical, high
vibration, and harsh environments. 50VT is meant to support mission critical applications that
rely on consistent thermal performance over the course of hundreds or thousands of cycles
and many years of continuous operation. THERM-A-GAP™ GEL 50VT requires no mixing
or curing and is designed for easy application and rework. It can be dispensed at various bond
line thicknesses to take up gaps created by assembly or manufacturing tolerances. This
document outlines the examination of the thermal reliability of this high-performance gap
filler after being subjected to long-term environmental aging under dry heat, heat & humidity
conditions, and temperature cycling from -40°C to 125°C.
The thermal performance of THERM-A-GAP™ GEL 50VT was examined after being
subjected to multiple environmental stress tests.
The thermal impedance of the aged samples did not experience a significant increase after any
of the treatments studied. After 1000-hour dwell at 125°C, 1000 hours at 85°C/85% relative
humidity, and 1000 temperature cycles from -40°C to 125°C, there was no statistically
significant increase in impedance according to one-way ANOVA with the Tukey method for
multiple comparisons. The mean value for thermal impedance decreased slightly for each
aging treatment, indicating an improvement in thermal performance. This improvement can
likely be attributed to enhanced wetting at the interface between the gel and the reliability
fixture.
Based on these results, THERM-A-GAP™ GEL 50VT demonstrates the ability to withstand
long- term aging without a reduction in thermal performance.
TR57988 May 2023