Espey Mfg. & Electronics Corp., a power electronics design and original equipment manufacturing company, designs, manufactures, and tests electronic equipment primarily for use in military and industrial applications in the United States and internationally.

The company's principal products include power supplies, power converters, filters, power transformers, magnetic components, power distribution equipment, UPS systems, antennas, and high-power radar systems for use in AC and DC locomotives, shipboard power, shipboard radar, airborne power, ground-based radar, and ground mobile power applications.

It also provides various services comprising design and development to specification, build to print, design services, design studies, environmental testing services, metal fabrication, painting services, and development of automatic testing equipment.

In addition, the company produces individual components, such as inductors, printed circuit boards, wires, and tests items.

It serves industrial manufacturers and defense companies, the government of the United States, foreign governments, and foreign electronic equipment companies through its direct sales organization and outside sales representatives.

The company was incorporated in 1928 and is based in Saratoga Springs, New York.