If you do not own a physical copy of an all-transistor equivalent book, you can replicate its utility using these free online strategies:
An all transistor equivalent book is typically divided into two main sections: the and the Technical Data Tables .
Ensure the substitute is the same type (NPN or PNP). all transistor equivalent book
Several websites have emerged as the modern equivalent of the transistor databook:
| Original Part | NTE/ECG Equivalent | Common Alternatives | |---------------|--------------------|--------------------| | 2N2907 | NTE159M | PN2907 | | 2N3906 | NTE159M | BC557, BC327 | | BC557 | NTE159M | 2N3906, BC327 | | 2SA1015 | NTE85 | 2N3906, BC557 | If you do not own a physical copy
Select 10–20 transistors that cover 90% of replacements:
Originally started by Sylvania and later taken over by Philips, the is arguably the most famous cross-reference system in electronics history. It consolidated tens of thousands of worldwide semiconductors into a streamlined numbering system (e.g., ECG123A, ECG159). If you find an ECG number, you can easily buy that specific universal replacement or find its modern equivalent. 2. NTE Semiconductors Cross Reference all transistor equivalent book
Websites like AllTransistors compile detailed parameters and automatically suggest equivalents based on mathematical tolerances.
If you do not own a physical copy of an all-transistor equivalent book, you can replicate its utility using these free online strategies:
An all transistor equivalent book is typically divided into two main sections: the and the Technical Data Tables .
Ensure the substitute is the same type (NPN or PNP).
Several websites have emerged as the modern equivalent of the transistor databook:
| Original Part | NTE/ECG Equivalent | Common Alternatives | |---------------|--------------------|--------------------| | 2N2907 | NTE159M | PN2907 | | 2N3906 | NTE159M | BC557, BC327 | | BC557 | NTE159M | 2N3906, BC327 | | 2SA1015 | NTE85 | 2N3906, BC557 |
Select 10–20 transistors that cover 90% of replacements:
Originally started by Sylvania and later taken over by Philips, the is arguably the most famous cross-reference system in electronics history. It consolidated tens of thousands of worldwide semiconductors into a streamlined numbering system (e.g., ECG123A, ECG159). If you find an ECG number, you can easily buy that specific universal replacement or find its modern equivalent. 2. NTE Semiconductors Cross Reference
Websites like AllTransistors compile detailed parameters and automatically suggest equivalents based on mathematical tolerances.
