Filtran Ltd. : Filers, transformers, power supplies, inductors/chokes

Keytronics Inc. : Power transformers, reactors, magnetic amplifiers, power supplies and converters

Emcon Emanation Control Limited. : TEMPEST and Zone products, RFI, EMC and EMI engineering support services

ION Networks. : Remote administrative management and secure access technology - secure appliances, secure access gateway and vendor access & control solutions

Secure Systems & Technologies (SST). : Development and manufacture of electronics equipment for military and secure government organizations - TEMPEST (NATO SDIP-27), EMC rated, rugged, encryption and communication equipment

API Electronics. : Power transistors, small signal transistors, rectifiers, tuning diodes, hybrid circuits, resistor/capacitor networks, diodes

Cryptek. : Secure fax products, identity card access solutions

TM Systems. : Government systems - manufacture VRS (Vertical Reference Systems), VLA (Visual Landing Aids), SGSI (Stabilized Glide Slope Indicators)

Islip Transformer & Metal Co. : Government systems - radar threat indicator

Sensonics. : Vibrator assemblies for analog meters in aircraft cockpits

Acquisitions prior to 2000

Ampower. : Power transistors

Unitrode. : Power transistors & darlingtons

Solid Power Corp. : Homotaxial power transistors

MSI Electronics. : Varactor tuning diodes, abrupt & hyperabrupt

ASI Microsystems. : Custom hybrid circuits

REL Labs. : Standard hybrid amplifiers, oscillators & components