| Компонент | Описание | Производитель | |
| DCR1278/30 | Thyristor. Vrrm = 3000V, Vrsm = 3100V. D.C. motors control, controlled rectifiers, high power drives. |
Usha India Ltd. |
|
| DCR1278/34 | Thyristor. Vrrm = 3400V, Vrsm = 3500V. D.C. motors control, controlled rectifiers, high power drives. |
Usha India Ltd. |
|
| DCR1278/38 | Thyristor. Vrrm = 3800V, Vrsm = 3900V. D.C. motors control, controlled rectifiers, high power drives. |
Usha India Ltd. |