| 2N4957 |  | Defense Supply Center Columbus | PNP Silicon Transistor, Amplifier | Original | PDF | 95.22KB | 16 | 
| 2N4957 |  | Microsemi | Discrete Semiconductor Products - Transistors - Bipolar (BJT) - RF - TRANS PNP 30V 30MA TO72 | Original | PDF | 226.01KB |  | 
| 2N4957 |  | Semico | Chip: geometry 0006 polarity PNP | Original | PDF | 28.77KB | 1 | 
| 2N4957 |  | Semico | PNP transistor | Original | PDF | 42.59KB | 2 | 
| 2N4957 |  | Advanced Semiconductor | Silicon Transistor Selection Guide | Scan | PDF | 404.58KB | 5 | 
| 2N4957 |  | General Transistor | Transistors for RF Applications | Scan | PDF | 27.37KB | 1 | 
| 2N4957 |  | Motorola | Motorola Semiconductor Datasheet Library | Scan | PDF | 236.76KB | 1 | 
| 2N4957 |  | Motorola | The European Selection Data Book 1976 | Scan | PDF | 45.74KB | 1 | 
| 2N4957 |  | Motorola | European Master Selection Guide 1986 | Scan | PDF | 89.34KB | 2 | 
| 2N4957 |  | Motorola | Power Transistor Selection Guide | Scan | PDF | 325.11KB | 6 | 
| 2N4957 |  | Unknown | Semiconductor Master Cross Reference Guide | Scan | PDF | 115.62KB | 1 | 
| 2N4957 |  | Unknown | Shortform Transistor Datasheet Guide | Short Form | PDF | 95.38KB | 1 | 
| 2N4957 |  | Unknown | Vintage Transistor Datasheets | Scan | PDF | 55.61KB | 1 | 
| 2N4957 |  | Unknown | Shortform IC and Component Datasheets (Plus Cross Reference Data) | Short Form | PDF | 104.47KB | 1 | 
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| 2N4957 |  | Unknown | Transistor Shortform Datasheet & Cross References | Scan | PDF | 92.66KB | 1 | 
| 2N4957 |  | Unknown | Transistor Replacements | Scan | PDF | 81.17KB | 1 | 
| 2N4957 |  | Unknown | Historical semiconductor price guide (US$ - 1998). From our catalog scanning project. | Historical | PDF | 33.32KB | 1 | 
| 2N4957 |  | Semico | UHF Amplifiers / NPN General Purpose Medium Speed Amplifiers | Scan | PDF | 182.56KB | 1 | 
| 2N4957 |  | SGS-Thomson | Class A Low Noise Transistors for Small Signal Applications | Scan | PDF | 60.24KB | 1 | 
| 2N4957 |  | Thomson-CSF | Shortform Semiconductor Catalogue 1982 | Short Form | PDF | 113.26KB | 2 |