Headquartered on Long Island New York, SPI has been manufacturing switching mode power supplies since 1976. With over 48 years of experience in the power supply manufacturing industry, we realize customer satisfaction is the key to a successful business. Our knowledge in power development enables us 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 our standard building block topologies to fulfill each individual program requirement. This combined with our high level of vertical integration results in a low risk approach and gives us 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, we 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!).

Download a copy of our company brochure - Company Brochure

*** Quality Policy ***

"It is the policy of Switching Power, Inc. to maintain a Quality System that supports our effort to design and manufacture a product that meets or exceeds customer expectations. Our team goals are established to achieve customer satisfaction, including meeting applicable statutory and regulatory requirements, and deliver premium product so that we may be our customers First Choice Supplier for power supply products."

Terms and conditions of sale: Terms And Conditions



Conveniently located next to MacArthur Airport (ISP), our 30,000 square foot facility is completely turnkey and uniquely suited to design and manufacture high reliability COTS & Military grade power supplies. Our 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.

Additionally, SPI has achieved ISO 9001:2015 & AS 9100, Rev."D" quality system certifications and is ITAR registered.

Directions to SPI

Helpful Links:

Where to fly - MacArthur Airport

Where to stay - Hilton Garden Inn

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Factory Direct Sales: 1-800-456-8118
Phone 631-981-7231
Fax 631-981-7266

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