| 1723841 | ZTX197 | High frequency NPN transistor | FERRANTI |
| 1723842 | ZTX212 | General purpose PNP transistor | FERRANTI |
| 1723843 | ZTX212A | General purpose PNP transistor | FERRANTI |
| 1723844 | ZTX212B | General purpose PNP transistor | FERRANTI |
| 1723845 | ZTX213 | General purpose PNP transistor | FERRANTI |
| 1723846 | ZTX213A | General purpose PNP transistor | FERRANTI |
| 1723847 | ZTX213B | General purpose PNP transistor | FERRANTI |
| 1723848 | ZTX213C | General purpose PNP transistor | FERRANTI |
| 1723849 | ZTX214 | General purpose PNP transistor | FERRANTI |
| 1723850 | ZTX214 | Low Noise PNP Transistor | FERRANTI |
| 1723851 | ZTX214B | General purpose PNP transistor | FERRANTI |
| 1723852 | ZTX214B | Low Noise PNP Transistor | FERRANTI |
| 1723853 | ZTX214C | General purpose PNP transistor | FERRANTI |
| 1723854 | ZTX214C | Low Noise PNP Transistor | FERRANTI |
| 1723855 | ZTX223 | Medium power NPN transistor | FERRANTI |
| 1723856 | ZTX223A | Medium power NPN transistor | FERRANTI |
| 1723857 | ZTX223B | Medium power NPN transistor | FERRANTI |
| 1723858 | ZTX237 | General purpose NPN transistor | FERRANTI |
| 1723859 | ZTX237A | General purpose NPN transistor | FERRANTI |
|
| 1723860 | ZTX237B | General purpose NPN transistor | FERRANTI |
| 1723861 | ZTX238 | General purpose NPN transistor | FERRANTI |
| 1723862 | ZTX238A | General purpose NPN transistor | FERRANTI |
| 1723863 | ZTX238B | General purpose NPN transistor | FERRANTI |
| 1723864 | ZTX238C | General purpose NPN transistor | FERRANTI |
| 1723865 | ZTX239 | General purpose NPN transistor | FERRANTI |
| 1723866 | ZTX239 | Low Noise NPN Transistor | FERRANTI |
| 1723867 | ZTX239B | General purpose NPN transistor | FERRANTI |
| 1723868 | ZTX239B | Low Noise NPN Transistor | FERRANTI |
| 1723869 | ZTX239C | General purpose NPN transistor | FERRANTI |
| 1723870 | ZTX239C | Low Noise NPN Transistor | FERRANTI |
| 1723871 | ZTX300 | General purpose NPN transistor | FERRANTI |
| 1723872 | ZTX300 | NPN SILICON PLANAR SMALL SIGNAL TRANSISTOR | Zetex Semiconductors |
| 1723873 | ZTX301 | General purpose NPN transistor | FERRANTI |
| 1723874 | ZTX302 | General purpose NPN transistor | FERRANTI |
| 1723875 | ZTX303 | General purpose NPN transistor | FERRANTI |
| 1723876 | ZTX304 | General purpose NPN transistor | FERRANTI |
| 1723877 | ZTX310 | Switching NPN transistor | FERRANTI |
| 1723878 | ZTX311 | Switching NPN transistor | FERRANTI |
| 1723879 | ZTX312 | Switching NPN transistor | FERRANTI |
| 1723880 | ZTX313 | Switching NPN transistor | FERRANTI |
