# Practical Electronics/Manufacturers Prefix

| Prefix | Manufacturer/s |
| A | Fairchild |
| A | National Semiconductor |
| A | AMD |
| A | Allegro Microsystems |
| ACF | General Instrument |
| AD | Analog Devices |
| AD | Harris |
| ADC | National Semiconductor |
| ADEL | Analog Devices |
| ADG | Analog Devices |
| ADLH | Analog Devices |
| ADM | Analog Devices |
| ADS | Burr-Brown |
| ADVFC | Analog Devices |
| AH | Optical Electronics Inc. |
| ALD | Burr-Brown |
| Am | AMD |
| AM | Advanced Micro Devices |
| AM | Datel |
| AMP | Analog Devices |
| AMPAL | AMD |
| AMSREF | Advanced Monolithic Systems |
| AN | Panasonic |
| AT | Atmel |
| ATT | Lucent Technologies |
| ATV | Atmel |
| AVS | ON Semiconductor (previously Thomson)) |
| AY | General Instrument |
| β | I.P.R.S. Baneasa |
| BQ | Benchmarq Microelectronics Inc. |
| BT | Brooktree |
| BUF | Analog Devices |
| BUF | Burr-Brown |
| BUF | Precision Monolithic |
| BX | Sony |
| C | Intel |
| CA | Harris |
| CAV | Analog Devices |
| CD | Harris |
| CDP | Harris |
| CLC | Comlinear |
| CLC | National Semiconductor |
| CM | Supertex, Temic |
| CMP | Monolithics |
| CMP | Analog Devices |
| COM | Standard Microsystem Corp. |
| COP | National Semiconductor |
| CP | Harris |
| CS | Harris, Cherry Semiconductor |
| CX | Sony, Cyrix |
| CXK | Sony |
| CY | Cypress |
| D | Siliconix, Intel |
| DAC | Analog Devices |
| DAC | National Semiconductor |
| DAC | Burr-Brown |
| DCP | Burr-Brown |
| DF | Siliconix |
| DG | Harris, Temic |
| DM | National Semiconductor |
| DM | Fairchild |
| DP | National Semiconductor |
| DS | National Semiconductor |
| DS | Dallas Semiconductor |
| EF | ON Semiconductor (previously Thomson) |
| EL | Elantec |
| EP | Altera |
| EPM | Altera |
| ET | ON Semiconductor (previously Thomson) |
| F | Fairchild |
| F | National Semiconductor |
| FSS | Ferranti |
| G | California Micro Devices Corp. |
| GA | Gazelle |
| GAL | Lattice |
| GEL | GE |
| GIC | General Instrument |
| GL | Goldstar |
| GM | Goldstar |
| GMM | Goldstar |
| GP | General Instrument |
| GSD | ON Semiconductor (previously Thomson) |
| H | Harris |
| HA | Harris |
| HA | Hitachi |
| HAD | Honeywell |
| HAS | Analog Devices |
| HCF | ON Semiconductor (previously Thomson) |
| HCPL | Hewlett-Packard |
| HCTL | Hewlett-Packard |
| HD | Hitachi |
| HDAC | Honeywell |
| HDM | Analog Devices |
| HEF | Philips |
| HEP | Motorola |
| HFA | Harris |
| HG | Hitachi |
| HI | Harris |
| HIN | Harris |
| HIP | Harris |
| HL | Hitachi |
| HM | Hitachi |
| HM | Temic |
| HN | Hitachi |
| HPM | Hewlett-Packard |
| HT | Holtek |
| HV | Harris |
| HY | Hyundai |
| i | Intel |
| I | Intel |
| ICH | Harris |
| ICL | Harris |
| ICM | Harris |
| IDT | Integrated Device Technology |
| IM | Harris |
| IMS | Inmos |
| INA | Burr-Brown |
| IP | Temic, Seagate Microelectronics |
| IR | Sharp |
| IR | International Rectifier |
| IS | Integrated Silicon Solutions Inc. |
| IS | Burr-Brown |
| ISD | Information Strorage Devices |
| ISO | Burr-Brown |
| ISPLSI | Lattice |
| ITT | ITT |
| IVC | Burr-Brown |
| KA | Samsung |
| KM | Samsung |
| KMM | Samsung |
| KR | Standard Microsystem Corp. |
| L | Fairchild |
| L | National Semiconductor |
| L | ON Semiconductor (previously Thomson) |
| L | Siliconix |
| L | Siltronics |
| L | Unitrode |
| LA | Sanyo |
| LC | Sanyo |
| LD | Siliconix |
| LD | Siltronics |
| LF | National Semiconductor |
| LF | Motorola |
| LFT | National Semiconductor |
| LH | National Semiconductor |
| LM | National Semiconductor |
| LM | ON Semiconductor (previously Thomson) |
| LMC | National Semiconductor |
| LMD | National Semiconductor |
| LMF | National Semiconductor |
| LMX | National Semiconductor |
| LPC | National Semiconductor |
| LPC | National Semiconductor |
| LS | LSI Computer Systems |
| LS | ON Semiconductor (previously Thomson) |
| LT | Linear Technology Corporation |
| LTC | Linear Technology Corporation |
| LTZ | Linear Technology Corporation |
| M | Mitsubishi |
| M | ON Semiconductor (previously Thomson) |
| MA | Analog Systems |
| MA | Marconi |
| MA | TESLA |
| MAA | TESLA |
| MAB | Philips |
| MACH | Vantis (AMD) |
| MAT | Monolithics |
| MAX | Maxim |
| MB | Fujitsu |
| MBA | TESLA |
| MBL8 | Fujitsu |
| MBM | Fujitsu |
| MC | Micra Hybrids |
| MC | Motorola |
| MC | ON Semiconductor |
| MC | ON Semiconductor (previously Thomson) |
| MC | Temic |
| MC | Texas Instruments |
| MCC | Motorola |
| MCCS | Motorola |
| MCM | Motorola |
| MCS | MOS Technology |
| MCT | Motorola |
| MEC | Motorola |
| MF | National Semiconductor |
| MH | TESLA |
| MHB | TESLA |
| MIC | Micrel |
| MIL | Microsystems International |
| Motorola |
| MK | ON Semiconductor (previously Thomson) |
| MK | Mostek |
| ML | Micro Linear Corp. |
| MM | Motorola |
| MM | Fairchild |
| MM | National Semiconductor |
| MN | Plessy |
| MN | Micro Networks |
| MP | Micro Power (Exar) |
| MPC | Burr-Brown |
| MPF | Motorola |
| MPQ | Motorola |
| MPS | Motorola |
| MPSA | Motorola |
| MPY | Burr-Brown |
| MSC | Microcomputers Systems Components |
| MSC | Oki |
| MSK | M. S. Kennedy |
| MSL8 | Mitsubishi |
| MSM | Oki |
| MT | Mitel Semiconductor |
| MUX | Analog Devices |
| MVA | GEC-Plessey Semiconductor |
| MWM | Motorola |
| MX | Macronix |
| MX | Maxim |
| N | Philips |
| N | Intel |
| NC | Nitron |
| NE | Philips |
| NE | Texas Instruments |
| NH | National Semiconductor |
| NJM | New Japanese Radio Corp. |
| NM | Fairchild |
| NMC | Fairchild |
| NQ | Seeq |
| NSC | Newport |
| OHN | Optek |
| OM | AEG |
| OM | Amperex |
| OM | ON Semiconductor (previously Thomson) |
| OM | Siemens |
| OM | Philips |
| OM | Telefunken |
| OP | Monolithics |
| OP | Analog Devices |
| OP | Texas Instruments |
| OPA | Burr-Brown |
| OPT | Burr-Brown |
| P | Intel |
| P | Temic |
| P | Performance Semiconductor |
| PA | Apex |
| PA | Intel |
| PAL | AMD |
| PALCE | Cypress |
| PALCE | Vantis (AMD) |
| PB | NEC |
| PBL | Ericsson |
| PC | NEC |
| PC | Philips |
| PCD | AEG |
| PCD | Amperex |
| PCD | ON Semiconductor (previously Thomson) |
| PCD | Siemens |
| PCD | Telefunken |
| PCD | Philips |
| PCF | AEG |
| PCF | Amperex |
| PCF | ON Semiconductor (previously Thomson) |
| PCF | Siemens |
| PCF | Telefunken |
| PCF | Philips |
| PCM | Burr-Brown |
| PD | NEC |
| PDM | Paradigm |
| PEEL | Information Chips and Technology Inc. |
| PGA | Burr-Brown |
| PH | Silicon Storage Technology |
| PIC | Microchip |
| PL | Altera |
| PLC | Philips |
| PLS | Philips |
| PM | Analog Devices |
| PQ | Seeq |
| PSD | Waferscale Integration inc. (WSI) |
| PWR | Burr-Brown |
| PZ | Philips |
| QS | Quality Semiconductor Inc. |
| R | Rockwell |
| R | Raytheon |
| Ray | Raytheon |
| RC | Raytheon |
| RC | Texas Instruments |
| RCV | Burr-Brown |
| RD | EG&G Reticon |
| REF | Analog Devices |
| REF | Burr-Brown |
| REG | Burr-Brown |
| RF | EG&G Reticon |
| RM | Raytheon |
| RM | EG&G Reticon |
| RT | EG&G Reticon |
| RTC | Seiko |
| RTC | Epson |
| RU | EG&G Reticon |
| S | Temic |
| S | Philips |
| SA | Philips |
| SAA | AEG |
| SAA | Amperex |
| SAA | Philips |
| SAA | Siemens |
| SAA | Telefunken |
| SAA | ON Semiconductor (previously Thomson) |
| SAB | AEG |
| SAB | Amperex |
| SAB | Philips |
| SAB | Siemens |
| SAB | Telefunken |
| SAB | ON Semiconductor (previously Thomson) |
| SABE | Siemens |
| SAF | AEG |
| SAF | Amperex |
| SAF | Philips |
| SAF | Siemens |
| SAF | Telefunken |
| SAF | ON Semiconductor (previously Thomson) |
| SC | Philips |
| SCB | AEG |
| SCB | Amperex |
| SCB | Philips |
| SCB | Siemens |
| SCB | Telefunken |
| SCB | ON Semiconductor (previously Thomson) |
| SCC | Philips |
| SCN | AEG |
| SCN | Amperex |
| SCN | Philips |
| SCN | Siemens |
| SCN | Telefunken |
| SCN | ON Semiconductor (previously Thomson) |
| SD | Temic |
| SE | Philips |
| SFC | ON Semiconductor (previously Thomson) |
| SFC | ESMF |
| SG | Silicon General (Infinity Micro) |
| SG | ON Semiconductor (previously Thomson) |
| SG | Texas Instruments |
| SG | Motorola |
| SHC | Burr-Brown |
| SI | Temic |
| SI | Maxim |
| SL | Plessy |
| SM | Nippon Precision Circuits |
| SN | Texas Instruments |
| SN | Motorola |
| SP | Plessy |
| SP | Philips |
| SPR | General Instrument |
| SS | Honeywell |
| SSM | Analog Devices |
| SSS | Monolithics |
| ST | ON Semiconductor (previously Thomson) |
| ST | Startech |
| STR | Allegro Microsystems |
| SW | Analog Devices |
| SYD | Syntaq |
| SYS | Syntaq |
| T | Toshiba |
| TA | Toshiba |
| TAA | AEG |
| TAA | Amperex |
| TAA | ON Semiconductor (previously Thomson) |
| TAA | Siemens |
| TAA | Philips |
| TAA | Telefunken |
| TAB | Plessy |
| TBA | AEG |
| TBA | Amperex |
| TBA | ON Semiconductor (previously Thomson) |
| TBA | Siemens |
| TBA | Philips |
| TBA | Telefunken |
| TC | Toshiba |
| TC | Telcom Semiconductor |
| TCA | AEG |
| TCA | Amperex |
| TCA | ON Semiconductor (previously Thomson) |
| TCA | Siemens |
| TCA | Philips |
| TCA | Telefunken |
| TCM | Telcom Semiconductor |
| TD | Toshiba |
| TD | ON Semiconductor (previously Thomson) |
| TDA | Philips |
| TDA | Motorola |
| TDA | ON Semiconductor (previously Thomson) |
| TDC | TRW |
| TDF | ON Semiconductor (previously Thomson) |
| TEA | AEG |
| TEA | Amperex |
| TEA | ON Semiconductor (previously Thomson) |
| TEA | Siemens |
| TEA | Philips |
| TEA | Telefunken |
| THM | Toshiba |
| TIBPAL | Texas Instruments |
| TIL | Texas Instruments |
| TIP | Texas Instruments |
| TIPAL | Texas Instruments |
| TIS | Texas Instruments |
| TL | Texas Instruments |
| TL | ON Semiconductor (previously Thomson) |
| TL | Motorola |
| TLC | Texas Instruments |
| TLE | Texas Instruments |
| TM | Texas Instruments |
| TMC | Taytheon |
| TML | Telmos |
| TMM | Toshiba |
| TMP | Toshiba |
| TMPZ | Toshiba |
| TMS | Texas Instruments |
| TP | Teledyne Philbrick |
| TPQ | Sprague |
| TS | ON Semiconductor (previously Thomson) |
| TSC | Teledyne Semiconductor |
| TSH | ON Semiconductor (previously Thomson) |
| U | Temic |
| U | Zentrum Microelectronics |
| UA | Philips |
| UA | Motorola |
| UA | Texas Instruments |
| UAA | Motorola |
| UAF | Burr-Brown |
| UC | Unitrode |
| UC | Motorola |
| UC | ON Semiconductor (previously Thomson) |
| UCC | Unitrode |
| UCN | Allegro Microsystems |
| UCS | Sprague |
| UD | Zentrum Microelectronics |
| UDN | Allegro Microsystems |
| UDS | Allegro Microsystems |
| UGN | Allegro Microsystems |
| ULN | ON Semiconductor (previously Thomson) |
| ULN | Motorola |
| ULN | Texas Instruments |
| ULN | US Microchip |
| UM | United Microelectronics Corp. |
| UMA | Philips |
| UNX | Fairchild |
| UNX | National Semiconductor |
| UPD | NEC |
| UPD8 | NEC |
| V | Amtel |
| VA | VTC |
| VC | VTC |
| VCA | Burr-Brown |
| VFC | Burr-Brown |
| VT | VLSI Technology Inc. |
| W | IC Works |
| WD | Western Digital |
| X | Xicor |
| XC | Motorola |
| XR | Exar |
| XTR | Burr-Brown |
| Z | Zilog |
| ZH | Zetex |
| ZLD | Ferranti |
| ZLDO | Zetex |
| ZM | Zetex |
| ZMR | Zetex |
| ZN | Ferranti |
| ZN | GEC-Plessey Semiconductor |
| ZR | Zetex |
| ZRA | Zetex |
| ZRB | Zetex |
| ZREF | Zetex |
| ZRT | Zetex |
| ZSD | Zetex |
| ZSM | Zetex |