Headquartered on Long Island New York, SPI has been manufacturing switching mode power supplies since 1976.

With over42 years of experience in the power supply manufacturing industry, they realize customer satisfaction is the key to a successful business. Their knowledge in power development enables them to offer standard and custom designed products for a wide variety of electronics. From shipborne to airborne and from ground based to mobile, SPI's strength is in using their standard building block topologies to fulfill each individual program requirement. This combined with their high level of vertical integration results in a low risk approach and gives them the ability to deliver quickly.

A few recognizable achievements include the development of a low leakage EMI line filter, and a patented front end, passive, power factor correction module (rated at over one million hours of MTBF). Most recently, they patented a 3 phase input topology with active power factor correction which cancels out all harmonic power line frequencies on the output ripple thus eliminating the need for additional output LC filters (extremely reliable & saves weight!).

Conveniently located next to MacArthur Airport (ISP), their 30,000 square foot facility is completely turnkey and uniquely suited to design and manufacture high reliability COTS & Military grade power supplies. Their operation includes modern equipment for Parylene Coating, winding magnetics, fabricating sheet metal (including heat sinks) and a state of the art engineering laboratory where innovation takes place.