| 1723961 | ZTX4403 | Medium power PNP transistors | FERRANTI |
| 1723962 | ZTX449 | Discrete - Bipolar Transistors - Transistor (BJT) Master Table - Transistors 30V to 50V | Diodes |
| 1723963 | ZTX449 | NPN Low SatTransistor | Zetex Semiconductors |
| 1723964 | ZTX450 | Discrete - Bipolar Transistors - Transistor (BJT) Master Table - Transistors 30V to 50V | Diodes |
| 1723965 | ZTX450 | Medium power NPN transistor | FERRANTI |
| 1723966 | ZTX450 | TO-92 Plastic-Encapsulate Biploar Transistors | Micro Commercial Components |
| 1723967 | ZTX450 | NPN Low Sat Transistor | Zetex Semiconductors |
| 1723968 | ZTX451 | Discrete - Bipolar Transistors - Transistor (BJT) Master Table - Transistors 55V to 100V | Diodes |
| 1723969 | ZTX451 | Medium power NPN transistor | FERRANTI |
| 1723970 | ZTX451 | NPN Med Power Transistor | Zetex Semiconductors |
| 1723971 | ZTX452 | Obsolete | Zetex Semiconductors |
| 1723972 | ZTX453 | Discrete - Bipolar Transistors - Transistor (BJT) Master Table - Transistors 55V to 100V | Diodes |
| 1723973 | ZTX453 | NPN Med Power Transistor | Zetex Semiconductors |
| 1723974 | ZTX454 | Obsolete | Zetex Semiconductors |
| 1723975 | ZTX455 | NPN SILICON PLANAR MEDIUM POWER TRANSISTORS | Diodes |
| 1723976 | ZTX455 | NPN High Voltage Transistor | Zetex Semiconductors |
| 1723977 | ZTX457 | NPN SILICON PLANAR MEDIUM POWER HIGH VOLTAGE TRANSISTOR | Diodes |
| 1723978 | ZTX457 | NPN High Voltage Transistor | Zetex Semiconductors |
| 1723979 | ZTX458 | NPN SILICON PLANAR MEDIUM POWER HIGH VOLTAGE TRANSISTOR | Diodes |
|
| 1723980 | ZTX458 | NPN High Voltage Transistor | Zetex Semiconductors |
| 1723981 | ZTX500 | General purpose PNP transistor | FERRANTI |
| 1723982 | ZTX500 | PNP SILICON PLANAR SMALL SIGNAL TRANSISTOR | Zetex Semiconductors |
| 1723983 | ZTX501 | General purpose PNP transistor | FERRANTI |
| 1723984 | ZTX502 | General purpose PNP transistor | FERRANTI |
| 1723985 | ZTX503 | General purpose PNP transistor | FERRANTI |
| 1723986 | ZTX504 | General purpose PNP transistor | FERRANTI |
| 1723987 | ZTX510 | Switching PNP transistor | FERRANTI |
| 1723988 | ZTX510 | PNP SILICON PLANAR HIGH SPEED SWITCHING TRANSISTOR | Zetex Semiconductors |
| 1723989 | ZTX530 | Low Noise PNP Transistor | FERRANTI |
| 1723990 | ZTX531 | Low Noise PNP Transistor | FERRANTI |
| 1723991 | ZTX537 | Medium power PNP transistors | FERRANTI |
| 1723992 | ZTX537A | Medium power PNP transistors | FERRANTI |
| 1723993 | ZTX537B | Medium power PNP transistors | FERRANTI |
| 1723994 | ZTX537C | Medium power PNP transistors | FERRANTI |
| 1723995 | ZTX537C | PNP SILICON PLANAR MEDIUM POWER TRANSISTOR | Zetex Semiconductors |
| 1723996 | ZTX538 | Medium power PNP transistors | FERRANTI |
| 1723997 | ZTX538A | Medium power PNP transistors | FERRANTI |
| 1723998 | ZTX538B | Medium power PNP transistors | FERRANTI |
| 1723999 | ZTX538C | Medium power PNP transistors | FERRANTI |
| 1724000 | ZTX541 | General purpose PNP transistor | FERRANTI |
