| 2SB1277 |  | ROHM | Medium power Transistor(- 32V, -2A) | Original | PDF | 131.41KB | 4 | 
| 2SB1277 |  | Various Russian Datasheets | Transistor | Original | PDF | 84.39KB | 8 | 
| 2SB1277 |  | Unknown | The Transistor Manual (Japanese) 1993 | Scan | PDF | 102.05KB | 2 | 
| 2SB1277 |  | Unknown | Transistor Substitution Data Book 1993 | Scan | PDF | 36.04KB | 1 | 
| 2SB1277 |  | Unknown | Shortform IC and Component Datasheets (Plus Cross Reference Data) | Short Form | PDF | 123.33KB | 1 | 
| 2SB1277 |  | Unknown | Shortform Data and Cross References (Misc Datasheets) | Short Form | PDF | 43.27KB | 1 | 
| 2SB1277 |  | Unknown | Japanese Transistor Cross References (2S) | Scan | PDF | 38.78KB | 1 | 
| 2SB1277 |  | Unknown | Japanese Transistor Cross References (2S) | Scan | PDF | 48.53KB | 1 | 
| 2SB1277 |  | ROHM | FTR, FTL Transistors, Low Profile | Scan | PDF | 154.18KB | 2 | 
| 2SB1277P |  | ROHM | Medium Power Transistor (-32V -2A) | Scan | PDF | 542.3KB | 11 | 
| 2SB1277Q |  | ROHM | Medium Power Transistor (-32V -2A) | Scan | PDF | 542.3KB | 11 | 
| 2SB1277R |  | ROHM | Medium Power Transistor (-32V -2A) | Scan | PDF | 542.3KB | 11 |