| HD1 | on-chip resistor NPN silicon epitaxial transistor For mid-speed switching | Datasheet*) |
| HD1A3M | on-chip resistor NPN silicon epitaxial transistor For mid-speed switching | Datasheet*) |
| HD1A4A | on-chip resistor NPN silicon epitaxial transistor For mid-speed switching | Datasheet*) |
| HD1A4M | on-chip resistor NPN silicon epitaxial transistor For mid-speed switching | Datasheet*) |
| HD1F2Q | on-chip resistor NPN silicon epitaxial transistor For mid-speed switching | Datasheet*) |
| HD1F3P | on-chip resistor NPN silicon epitaxial transistor For mid-speed switching | Datasheet*) |
| HD1L2Q | on-chip resistor NPN silicon epitaxial transistor For mid-speed switching | Datasheet*) |
| HD1L3N | on-chip resistor NPN silicon epitaxial transistor For mid-speed switching | Datasheet*) |