IC Manufacturer Codes Reference Table
Integrated Circuit (IC) manufacturer codes are unique identifiers printed on chips to indicate their origin and production details. These alphanumeric markings differ among companies, but all serve the same purpose – to ensure clear traceability and authenticity. Identifying the maker of an IC begins with reading its prefix, the abbreviation printed on the chip. This prefix links to a registered company — for instance, SN or TL typically represents Texas Instruments, LM may belong to National Semiconductor or TI, and MC points to Motorola or ON Semiconductor. Sometimes I have the same chip from different manufacturer f.i. SN and DM the chips are compatible.
| Abbreviation | Manufacturer | Abbreviation | Manufacturer |
| AM | Advanced Micro Devices (AMD) | A | National Semiconductor |
| AMSREF | Advanced Monolithic Systems | ADC | National Semiconductor |
| OM | AEG | CLC | National Semiconductor |
| PCD | AEG | COP | National Semiconductor |
| PCF | AEG | DAC | National Semiconductor |
| SAA | AEG | DM | National Semiconductor |
| SAB | AEG | DP | National Semiconductor |
| SAF | AEG | DS | National Semiconductor |
| SCB | AEG | F | National Semiconductor |
| SCN | AEG | L | National Semiconductor |
| TAA | AEG | LF | National Semiconductor |
| TBA | AEG | LFT | National Semiconductor |
| TCA | AEG | LH | National Semiconductor |
| TEA | AEG | LM | National Semiconductor |
| A | Allegro Microsystems | LMC | National Semiconductor |
| STR | Allegro Microsystems | LMD | National Semiconductor |
| UCN | Allegro Microsystems | LMF | National Semiconductor |
| UDN | Allegro Microsystems | LMX | National Semiconductor |
| UDS | Allegro Microsystems | LPC | National Semiconductor |
| UGN | Allegro Microsystems | MF | National Semiconductor |
| EP | Altera | MM | National Semiconductor |
| EPM | Altera | NH | National Semiconductor |
| PL | Altera | UNX | National Semiconductor |
| A | AMD | PB | NEC |
| Am | AMD | PC | NEC |
| AMPAL | AMD | PD | NEC |
| PAL | AMD | UPD | NEC |
| OM | Amperex | UPD8 | NEC |
| PCD | Amperex | NJM | New Japan Radio Corp. |
| PCF | Amperex | NSC | Newport |
| SAA | Amperex | SM | Nippon Precision Circuits |
| SAB | Amperex | NC | Nitron |
| SAF | Amperex | MM | Oki |
| SCB | Amperex | MSM | Oki |
| SCN | Amperex | MC | ON Semiconductor |
| TAA | Amperex | EF | ON Semiconductor (previously Thomson) |
| TBA | Amperex | ET | ON Semiconductor (previously Thomson) |
| TCA | Amperex | GSD | ON Semiconductor (previously Thomson) |
| TEA | Amperex | HCF | ON Semiconductor (previously Thomson) |
| V | Amtel | L | ON Semiconductor (previously Thomson) |
| AD | Analog Devices | LM | ON Semiconductor (previously Thomson) |
| ADEL | Analog Devices | LS | ON Semiconductor (previously Thomson) |
| ADG | Analog Devices | M | ON Semiconductor (previously Thomson) |
| ADLH | Analog Devices | MC | ON Semiconductor (previously Thomson) |
| ADM | Analog Devices | NE | Philips |
| ADP | Analog Devices | LM | Texas Instruments |
| CA | RCA | SN | Texas Instruments |
| CD | RCA | TL | Texas Instruments |
| HEP | RCA | UA | Fairchild Semiconductor |
| LM | National Semiconductor / TI | LF | Texas Instruments |
| MC | Motorola (ON Semiconductor) | LMV | Texas Instruments |
| NE | Philips | UC | Unitrode |
| NTE | NTE Electronics | LT | Linear Technology |
| MAX | Maxim Integrated | LTC | Linear Technology |
| ADI | Analog Devices | ST | STMicroelectronics |
| SG | Silicon General | STR | Sanken |
| TDA | Philips / STMicroelectronics | STRM | Sanken |
| TL | Texas Instruments | KA | Samsung |
| LMH | Texas Instruments | LA | Sanyo |
| MC | Motorola / ON Semiconductor | TA | Toshiba |
| NJU | New Japan Radio (JRC) | TC | Toshiba |
| HA | Hitachi | AN | Panasonic |
| HD | Hitachi | MN | Panasonic |
| BA | Rohm Semiconductor | BA | Rohm Semiconductor |
| BD | Rohm Semiconductor | CXA | Sony |
| CXA | Sony | CXD | Sony |
| CXD | Sony | IR | International Rectifier |
| IRF | International Rectifier | IX | IXYS Semiconductor |
| FDS | Fairchild Semiconductor | MMBT | Diodes Inc. |
| LMK | Texas Instruments | XC | Xilinx |
| XC | Xilinx | DS | Dallas Semiconductor |
| DS | Dallas Semiconductor | ISL | Intersil |
| ISL | Intersil | HN | Hitachi |
| KIA | KEC | SM | Silicon Motion |
| SI | Siliconix (Vishay) | VN | STMicroelectronics |
| TLV | Texas Instruments | MAX | Maxim Integrated |
| UC | Unitrode (now TI) | NJM | New Japan Radio Corp. |
| MCP | Microchip Technology | PIC | Microchip Technology |
| AT | Atmel (now Microchip) | SST | Silicon Storage Tech. |
| XC | Xilinx | EP | Altera |
| EPF | Altera | EPM | Altera |