| Abbreviation | Definition |
|---|---|
| SHV | Safe High Voltage |
| SI | Semi-Insulating |
| SI | Signal Integrity |
| SIA | Semiconductor Industry Association |
| SIB | Solar Impluse Battery |
| SIC | Silicon Carbide |
| SID | Slew Induced Distortion |
| SIDP | Sputter Ion Depth Profiling |
| SIE | System Industrie Electronic |
| SIEC | Southern Illinois Electric Coop |
| SIEC | Southern Illinois Electric Cooperative |
| SIEC | Southern Iowa Electric Cooperative |
| SIEE | Source Inspector Electrical Equipment |
| SIEF | Seoul International Electric Fair |
| SiGe | Silicon Germanium |
| SIGR | Silicon-Graphen |
| SIH4 | Silane |
| SIL | Semiconductor Injection Laser |
| SIL | Speech Interference Level |
| SIL | Systems Integration Laboratory |