| 925401 | M27C4001-12L6TR | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS Thomson Microelectronics |
| 925402 | M27C4001-12L6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925403 | M27C4001-12L6X | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS Thomson Microelectronics |
| 925404 | M27C4001-12L6X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925405 | M27C4001-12N1TR | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS Thomson Microelectronics |
| 925406 | M27C4001-12N1TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925407 | M27C4001-12N1X | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS Thomson Microelectronics |
| 925408 | M27C4001-12N1X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925409 | M27C4001-12N6TR | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS Thomson Microelectronics |
| 925410 | M27C4001-12N6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925411 | M27C4001-12N6X | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS Thomson Microelectronics |
| 925412 | M27C4001-12N6X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925413 | M27C4001-12XB1TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925414 | M27C4001-12XB1X | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS Thomson Microelectronics |
| 925415 | M27C4001-12XB1X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925416 | M27C4001-12XB6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925417 | M27C4001-12XB6X | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS Thomson Microelectronics |
| 925418 | M27C4001-12XB6X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925419 | M27C4001-12XC1TR | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS Thomson Microelectronics |
|
| 925420 | M27C4001-12XC1TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925421 | M27C4001-12XC1X | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS Thomson Microelectronics |
| 925422 | M27C4001-12XC1X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925423 | M27C4001-12XC6TR | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS Thomson Microelectronics |
| 925424 | M27C4001-12XC6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925425 | M27C4001-12XC6X | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS Thomson Microelectronics |
| 925426 | M27C4001-12XC6X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925427 | M27C4001-12XF1TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925428 | M27C4001-12XF1X | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS Thomson Microelectronics |
| 925429 | M27C4001-12XF1X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925430 | M27C4001-12XF6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925431 | M27C4001-12XF6X | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS Thomson Microelectronics |
| 925432 | M27C4001-12XF6X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925433 | M27C4001-12XL1TR | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS Thomson Microelectronics |
| 925434 | M27C4001-12XL1TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925435 | M27C4001-12XL1X | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS Thomson Microelectronics |
| 925436 | M27C4001-12XL1X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925437 | M27C4001-12XL6TR | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS Thomson Microelectronics |
| 925438 | M27C4001-12XL6TR | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
| 925439 | M27C4001-12XL6X | 4 Mbit (512Kb x 8) EPROM, 120ns | SGS Thomson Microelectronics |
| 925440 | M27C4001-12XL6X | 4 Mbit 512Kb x 8 UV EPROM and OTP EPROM | ST Microelectronics |
