| TPTampa Printed Circuits Corporation | Tampa | FL | — | ◇ UNVERIFIED |
| TTaytronics | Saint Peter | MN | — | ◇ UNVERIFIED |
| TCT C Cosmotronic INC Dba Cosmotronic | Irvine | CA | — | ◇ UNVERIFIED |
| TCTdi Circuitek Div | Belvidere | NJ | — | ◇ UNVERIFIED |
| TUTechnica USA | Irvine | CA | — | ◇ UNVERIFIED |
| TITechnitron INC | Santa Clara | CA | — | ◇ UNVERIFIED |
| TITechnitron, INC | Mountain View | CA | — | ◇ UNVERIFIED |
| TCTe Conectivity | Menlo Park | CA | — | ◇ UNVERIFIED |
| TCTe Connectivity | Hampton | VA | — | ◇ UNVERIFIED |
| TETectron Engineering Company | Jacksonville | FL | — | ◇ UNVERIFIED |
| TITeknicircuits INC | Danbury | CT | — | ◇ UNVERIFIED |
| TMTek-tronics Mfg INC | Crystal Lake | IL | — | ◇ UNVERIFIED |
| TSTektronix Service Solutions, INC. | Orlando | FL | — | ◇ UNVERIFIED |
 Teledyne Controls Div Teledyn | Los Angeles | CA | — | ◇ UNVERIFIED |
| TITeledyne Instruments, INC. | Dallas | TX | — | ◇ UNVERIFIED |
| TRTeledyne Rad-icon Imaging Corporation | Sunnyvale | CA | — | ◇ UNVERIFIED |
| TWTeledyne Wireles LLC Dba Teled | Sunnyvale | CA | — | ◇ UNVERIFIED |
| TCTelephonics Corporation/ttm Technologies Building Expansion | Elizabeth City | NC | — | ◇ UNVERIFIED |
| TITelog Instruments INC. | Victor | NY | — | ◇ UNVERIFIED |
| TBTelonic Berkeley INC | Laguna Beach | CA | — | ◇ UNVERIFIED |
| TMTel-tru Manufacturing, INC. | Rochester | NY | — | ◇ UNVERIFIED |
| TATempo Automation INC | San Francisco | CA | — | ◇ UNVERIFIED |
| TCTeradyne Circuits San Diego | San Diego | CA | — | ◇ UNVERIFIED |
| TITeradyne INC | Boston | MA | — | ◇ UNVERIFIED |
| TITeradyne INC. | Agoura Hills | CA | — | ◇ UNVERIFIED |
| TPTest Products, Incorporated | Sterling Heights | MI | — | ◇ UNVERIFIED |
| TCTexas Circuitry | Garland | TX | — | ◇ UNVERIFIED |
| TBThe Boeing Company | Torrance | CA | — | ◇ UNVERIFIED |
| TEThe Energy Conservatory INC | Minneapolis | MN | — | ◇ UNVERIFIED |
| TTThermal Transfer Composites, LLC | Chattanooga | TN | — | ◇ UNVERIFIED |
| TEThermo Electric Company, INC. | West Chester | PA | — | ◇ UNVERIFIED |
| TFThermo Fisher Scientific | San Jose | CA | — | ◇ UNVERIFIED |
| TFThermo Fisher Scientific (dba Dionex) | Sunnyvale | CA | — | ◇ UNVERIFIED |
| TSThe Smtc Manufacturing Corporation | Fremont | CA | — | ◇ UNVERIFIED |
| TSThe Stratford Companies, Inc. | Hayden | ID | — | ◇ UNVERIFIED |
| TMThomson Multimedia INC. | Marion | IN | — | ◇ UNVERIFIED |
| TJThree J USA, LLC | Milwaukee | WI | — | ◇ UNVERIFIED |
| TZTime Zero CORP | Paterson | NJ | — | ◇ UNVERIFIED |
| TETitan Electronics | San Diego | CA | — | ◇ UNVERIFIED |
| TPTitan Pcb East INC | Amesbury | MA | — | ◇ UNVERIFIED |
| TTitan/sesco | Chatsworth | CA | — | ◇ UNVERIFIED |
 Tlc Electronics INC | Saint Paul | MN | — | ◇ UNVERIFIED |
 Tobar Industries | Mountain View | CA | — | ◇ UNVERIFIED |
| Tobar Industries INC. | Morgan Hill | CA | — | ◇ UNVERIFIED |
| TETokyo Electron America INC | Lehi | UT | — | ◇ UNVERIFIED |
 Tooh Dineh Industries, INC. | Leupp | AZ | — | ◇ UNVERIFIED |
| TEToppan Electronics INC | San Diego | CA | — | ◇ UNVERIFIED |
| TAToshiba America Electronic Com | San Jose | CA | — | ◇ UNVERIFIED |
| TAToshiba America Electronic Components, INC | San Jose | CA | — | ◇ UNVERIFIED |
| TIToxalert International INC | Mound | MN | — | ◇ UNVERIFIED |
| TCTrandes Corporation | Norfolk | VA | — | ◇ UNVERIFIED |
| TTTransaction Tech INC | Los Angeles | CA | — | ◇ UNVERIFIED |
| TJTranschem Jetronics Ind INC D | Corona | CA | — | ◇ UNVERIFIED |
| TCTrans Circuits INC | Saint Petersburg | FL | — | ◇ UNVERIFIED |
| TPTransco Products INC | Camarillo | CA | — | ◇ UNVERIFIED |
| TDTransfer Devices INC | Santa Clara | CA | — | ◇ UNVERIFIED |
| TDTransistor Devices Inc/stroudsburg | Delaware Water Gap | PA | — | ◇ UNVERIFIED |
| TTrans-lux | Norwalk | CT | — | ◇ UNVERIFIED |
| TETranspo Electronics INC | Orlando | FL | — | ◇ UNVERIFIED |
| TCTriad Circuit INC | Round Lake | IL | — | ◇ UNVERIFIED |
| TCTriangle Circuits of Pittsburgh | Oakmont | PA | — | ◇ UNVERIFIED |
| TITricon Industries INC | Downers Grove | IL | — | ◇ UNVERIFIED |
| TATried and True Metrology LLC | Chesapeake | VA | — | ◇ UNVERIFIED |
| TCTrilogy Circuits, Inc | Richardson | TX | — | ◇ UNVERIFIED |
| TNTrimble Navigation | Milpitas | CA | — | ◇ UNVERIFIED |
| TLTri-mcag, LLC | Visalia | CA | — | ◇ UNVERIFIED |
| TLTrio Laboratories INC | Plainview | NY | — | ◇ UNVERIFIED |
| TITri-state Industries, INC. | Tulsa | OK | — | ◇ UNVERIFIED |
 Tri-tech Forensics, INC. | Southport | NC | — | ◇ UNVERIFIED |
| TMTritech Manufacturing Incorporated | Fort Wayne | IN | — | ◇ UNVERIFIED |
| TATriton Aerospace | Burlington | WA | — | ◇ UNVERIFIED |
| TETrombetta Electronics | Malden | MA | — | ◇ UNVERIFIED |
| TSTrw Sensor Operations | San Dimas | CA | — | ◇ UNVERIFIED |
| TTTrw Technar INC | Irwindale | CA | — | ◇ UNVERIFIED |
| TITsc International, INC. | Toledo | IL | — | ◇ UNVERIFIED |
| TST S Mfg INC | Atwater | CA | — | ◇ UNVERIFIED |
| TITStream, Inc. | San Jose | CA | — | ◇ UNVERIFIED |
| TPTtm Printed Circuit Group INC | San Diego | CA | — | ◇ UNVERIFIED |
 Ttm Technologies | Santa Clara | CA | — | ◇ UNVERIFIED |
| Ttm Technologies Binghamton | Endicott | NY | — | ◇ UNVERIFIED |
| Ttm Technologies - Hayward/uni | Union City | CA | — | ◇ UNVERIFIED |
| Ttm Technologies INC | Logan | UT | — | ◇ UNVERIFIED |
| Ttm Technologies Redmond Site | Redmond | WA | — | ◇ UNVERIFIED |
| TITwin Industries | Santa Clara | CA | — | ◇ UNVERIFIED |
| TETyco Electronics/ciid | Asheville | NC | — | ◇ UNVERIFIED |
| TETyco Electronics Printed Circuit Group INC Los Angeles Div | Inglewood | CA | — | ◇ UNVERIFIED |
| TPTyco Printed Circuit Goup-stafford Div | Staffordville | CT | — | ◇ UNVERIFIED |
| TPTyco Printed Circuit Group INC | Santa Clara | CA | — | ◇ UNVERIFIED |
| TPTyco Printed Circuit Group Melbourne Div. | Melbourne | FL | — | ◇ UNVERIFIED |
| TPTyco Printed Circuit Group Stafford Div | Stafford | CT | — | ◇ UNVERIFIED |
| TPTyco Printed Circut Group INC | Inglewood | CA | — | ◇ UNVERIFIED |
| TCTympanium Corporation | Malden | MA | — | ◇ UNVERIFIED |
| USUltimate Solutions CORP | San Jose | CA | — | ◇ UNVERIFIED |
| URUnicircuit - Roseville | Roseville | MN | — | ◇ UNVERIFIED |
| UIUnimeasure INC | Corvallis | OR | — | ◇ UNVERIFIED |
| UUnipixel | Colorado Springs | CO | — | ◇ UNVERIFIED |
| UEUnited Electronics CORP | Rosemont | IL | — | ◇ UNVERIFIED |
 United Radio Frequency LLC | Fountain | CO | — | ◇ UNVERIFIED |
| UIUnit Industries Group INC Ems | Fullerton | CA | — | ◇ UNVERIFIED |
| UPUnitrode Passive Components Di | Sun Valley | CA | — | ◇ UNVERIFIED |
