Miniature filament lamp for lighting fixtures inside ground transportation vehicles and planes.
Annotation breakdown:
SM – miniature lamp
28 – rated voltage
1,4 – rated power
Technical parameters:
| Rated voltage, V | 28 |
| Rated power, W | 1,4 |
| Luminous flux, lm | 1,5 |
| Average lifetime, not less than, h | 350 |
| Light color | white |
| Dimensions, mm (diameter x length) | 7,5 x 17,5 |
