| Abbreviation | Definition |
|---|---|
| HARM | High-speed Anti-Radiation Missile |
| HART | Highway Addressable Remote Transducer. |
| HASL | Hot Air Solder Leveling |
| HAST | Highly-Accelerated Stress Testing |
| HAZCOM | HAZard COMmunication Standard |
| HB | Horizontal Bridgeman (crystal) |
| HBC | High Blow Current |
| HBT | Heterojunction Bipolar Transistor |
| HBTL | Heterojunction Bipolar Transistor Laser |
| HC | Headphone Coupling |
| HC | High Current |
| HCCT | Heat Cell Conductor Technology |
| HCI | Hot Carrier Injection |
| HCMOS | high-speed CMOS |
| HCP | Hexagonal Close Packed |
| HCRU | High Current Relay Unit |
| HCS | Hot-Carrier Suppressed |
| HCT | High Capacity Trap |
| HCT | High Compression Technology |
| HCT | High-speed CMOS (Complementary Metal Oxide Semiconductor) TTL (Transistor-Transnstor Logic) |