Magna-Power Electronics, a leading programmable DC power supply, and electronic load manufacturer based in Flemington, New Jersey, introduced Pitel Paste, a high-performance thermal paste for use in power electronics applications. The first formula introduced, Pitel Paste AZ-01, has been formulated and refined over the past eight years, balancing thermal transfer performance with ease of dispensing and cost, making it attractive for a wide range of electronics manufacturers. Pitel Paste AZ-01 is available in seven different containers ranging in volume from 1 ml to 19,000 ml. Syringe, container, and tube packaging is available to support various dispensing methods.
A thermal interface material between two metal surfaces can offer up to two orders of magnitude drop in thermal resistance. With higher power densities afforded by new gallium-nitride (GaN) and silicon-carbide (SiC) wide-bandgap semiconductors, thermal transfer considerations in power electronics are more crucial than ever.
Pitel Paste AZ-01 achieves a thermal resistance of 6.5 x 10-6 K·m2/W (ASTM D5470), which benchmarks void-filling thermal paste performance for power semiconductors, measuring how easily heat can be conducted between two surfaces. Lower thermal resistance allows product designers to achieve greater power densities by providing better transfer of heat from power semiconductors to the heatsink. Magna-Power evaluated and iterated on its own thermal paste formulation through the lens of power electronics applications. Today, Pitel Paste plays a critical role in the company’s ability to deliver among the most power-dense programmable power supplies on the market.
“Pitel Paste has been formulated to achieve the ideal balance between thermal, electrical, and rheological properties,” said Stan Jaracz, Ph.D., a Senior Chemical Engineer at Magna-Power Electronics. “It is the perfect thermal interface material for all application methods from spatula to stencil, providing excellent thermal transfer properties, with a packaging portfolio that tailors Pitel Paste for many electronics manufacturing processes."
With internal capabilities that include sheet metal and heatsink fabrication, CNC machined surface finishing, and power module assembly, Magna-Power is uniquely positioned to address power semiconductor heat extraction with a vertically integrated approach. Through a series of white papers, Magna-Power will be sharing its thermal paste technical experience and application techniques. The first white paper, titled Thermal Paste Surface Application in Power Electronics Manufacturing, is now available and discusses various dispensing methods, with considerations for automation, volume precision, placement precision, and setup costs.
Pitel Paste Formula AZ-01 offers excellent performance in power electronics applications with minimal separation and a long shelf-life, all while supporting a variety of dispensing mechanisms, such as spatulas, stencils, and volumetric dispensing. Today, with over 15,000 Magna-Power DC power supplies and electronic loads in the field utilizing Pitel Paste, Magna-Power is pleased to offer power electronics manufacturers the same benefits it has achieved with a well-balanced high-performing thermal compound: Pitel Paste Formula AZ-01.
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