| Accutron, LLC | 815 | Magma Design Automation, Inc. | 320 |
| Aehr Test Systems | 523 | MC Test Products | 835 |
| Altanova Corporation | 602 | MEI | 92 |
| Amphenol Intercon Systems | 613 | Mentor Graphics Corporation | 112 |
| Antares Advanced Test Technologies | 712 | Micro Control Company | 302 |
| Ardent Concepts, Inc. | 941 | MicroProbe | 97 |
| ARM Inc | 117 | Nano Integrated Solutions, Inc. | 741 |
| Asset InterTech, Inc. | 404 | Nextest Systems | 506 |
| Asterion | 612 | NHK Spring Co., LTD. | 841 |
| Baykal Technology, Inc. | 511 | Novas Software | 418 |
| BucklingBeam | 641 | NXP Semiconductors | 935 |
| Cadence Design Systems, Inc. | 122 | Optimal Test | 518 |
| Carsem | 403 | Paricon Technologies Corporation | 811 |
| Cascade Microtech | 96 | Phoenix Test Arrays, LLC | n/a |
| Centellax, Inc. | 723 | Pickering Electronics Ltd. | 809 |
| CMR Summit Silicon Valley | 810 | Pickering Interfaces Ltd. | 807 |
| Corad Technology Inc. | 95 | Pintail Technologies | 218 |
| Corelis, Inc. | 606 | Plastronics Socket Company | 224 |
| Credence | 121 | Precision Contacts | 823 |
| Custom Interconnects | 601 | Premier Semiconductor Services LLC/LP | 629 |
| Daitron, Inc. | 87 | ProductionLine Testers | 90 |
| Data Translation | 736 | Proligent | 643 |
| Defacto Technologies | 837 | Protos Electronics | 88 |
| DFT Microsystems, Inc. | 701 | Q-Star Test | 410 |
| DFW Test, Inc. | n/a | QualiSystems | 812 |
| DSL Labs | 821 | R&D Circuits | 611 |
| Dynamic Test Solutions | 94 | Reed Business Information | n/a |
| EE Evaluation Engineering | 722 | Reid-Ashman Manufacturing | 702 |
| Electroglas Inc. | 101 | Roos Instruments Inc. | 103 |
| ELES Semiconductor Equipment Spa | 642 | Rucker and Kolls Inc. | 513 |
| Enplas Tesco Inc. | 710 | Sanyu Electric, Inc | 721 |
| ERS America LLC | 726 | Scanimetrics | 737 |
| ESPEC Corporation | 801 | Semiconductor Test Consortium | 412 |
| Everett Charles Technologies | 716 | Signal Transfer Technology, Inc. | 742 |
| Exatron | 109 | Silicon Turnkey Solutions | 744 |
| Finley Design Services, Inc. | 803 | Siliconaid Solutions | 317 |
| Focused Test, Inc. | 632 | Simutest, Inc. | 719 |
| FormFactor | 631 | Soto Technologies International | 729 |
| Geotest-Marvin Test Systems, Inc. | 816 | Springer | 115 |
| GOEPEL electronic GmbH | 620 | SV Probe, Inc. | 938 |
| GuideTech | 636 | Synopsys Inc. | 212 |
| HiLevel Technology, Inc. | 624 | SynTest Technologies, Inc. | 735 |
| Inovys Corporation | 93 | Taconic | 638 |
| Integra Technology | 420 | TEAM A.T.E. | 639 |
| Integrated Test Corporation | 222 | Teledyne Relays | 813 |
| Intellitech Corporation | 308 | TeraVicta Technologies, Inc. | 422 |
| inTest Silicon Valley | 512 | Teseda Corporation | 111 |
| JD Instruments, LLC | 731 | Test Coach Corporation | 521 |
| Johnstech International | 502 | Test Enterprises, Inc. | 630 |
| Joy Signal Technology | 635 | Test Insight | 509 |
| JTAG Technologies, Inc. | 517 | Tokyo Electron America, Inc. | 825 |
| Lambda Americas | 708 | TSSI | 838 |
| Left Coast Instruments | 725 | Unitechno USA, Inc. | 113 |
| Liberty Research Co | 637 | Virage Logic | 319 |
| LogicVision Inc. | 314 | White Mountain Labs | 842 |
| Loranger International Corporation | 401 | Yamaichi Electronics USA Inc | 89 |
| M & M Specialties, Inc. | 937 | | |
