NOM-019-SCFI-1998 scope of application
The safety requirements and testing methods covered by this standard apply to products that include but are not limited to the following:
- Electronic data processing machines, identified as hand-held (laptop, notebook, palmtop), microcomputers, personal systems, personal computers, personal use computers, network terminals (Pc-net), servers or equivalent which additionally meet the following two requirements:
- They are uniprocessors.
- The technology they employ as their main operating BUS is BUS-AT (ISA), or EISA, or MCA, or NUBUS, or BIOS, or PCI, or PCMI, or PMCIA in all their current, future or derived releases.
- The peripherals associated with the machines described in the sub-section above such as printers, plotters, external disk units, external tape units, digitizing pads, image digitizers, optical readers, monitors and terminals.
- Equipment used for electronic communication between data processing equipment and peripherals, local area networks such as concentrators, protocol converters or routers, etc., designed to handle only one technology and with a data BUS not in excess of 100 MBs, or which has any of the following characteristics:
- They should not be of the modular type.
- They should not have programming facilities.
The following are also considered by the standard in accordance with general criteria in the field of certification:
- Machines for word treatment or processing.
- Automatic analogical or hybrid machines for processing data.
- Automatic machines or data processing, digital, hand-held with a weight equal to or less than [sic] kilogram, comprising at least a CPU, a keyboard and a display.
- Combined units with an input/output unit as well as those presented in the form of a system.
- Digital processing units that include memory units, input units and output units.
- Color and monochrome monitors with cathode ray tubes.
- Monitors other than cathode ray tubes with a visual field of 14" diagonally measured.
- Laser printers, LED printers, ink-jet printers, thermal transfer printers and ion deposition printers.
- Combined input and output units (interfaces).
- Optical readers (scanners) and magnetic ink reading devices, bar codes.
- Local area network (LAN) devices (concentrators, routers, distributors, repeaters).
- Control units or adapters and their interfaces.
- Modems.
- Multimedia systems.
- Digital photographic cameras.
- Disk units, for local area networks, controlling or adapting disks, etc., with their own carcasses.
- Memory units presented in their own carcasses.
- Peripherals such as keyboards, mice, remote control pointers, digitizing pads, etc.
- CD ROM units.
- Medical equipment for home use or self diagnosis equipment controlled by data processing equipment.
- Others resulting from new technological developments.
The following are excluded from the scope of application of this Standard: highly specialized equipment not included in the scope of application of the Standard and not sold directly to the public at large but rather to corporate users or institutions that install, operate and update such equipment directly or jointly with the company that supplies such equipment including:
- Multi-processing architecture equipment, irrespective of the type and number of processors used. This includes workstations, scalable servers that do not meet the provisions under Sub-section 1.1 of the Standard, superservers, minicomputers, corporate systems, enterprise systems or business computer systems, mid-range systems, fault-tolerant systems, non-stop systems, high-performance systems, supercomputers and macrocomputers.
- The peripherals associated to the machines set forth in sub-section 1.2 such as printers, plotters, external disk units, external tape units, digitizing pads, image digitizers (scanners), optical readers, monitors, terminals or control or adapter units.
- Equipment used for electronic communication among data processing equipment and peripherals, local area networks (LAN), etc., such as concentrators, protocol converters or routers that meet two of the following characteristics:
- Has a data BUS higher than or equal to 100 MBs.
- Has a modular structure designed to change their characteristics as regards to different technologies.
- Programmable and may handle different communication protocols and/or allow monitoring of local area network.
- Sensors, alarms and other equipment for the detection and signaling of conditions that may cause damage or personal injuries.
- Fire extinguishing systems.
- Power supply equipment installed separately in a unit or system (for instance, motor generators, transformers and cabling for the supply of by-passed circuits).
- Electronic equipment for playing and recording audio frequency not connected to systems such as dictating machines, recorders and record players.
- Data processing equipment specifically designed to operate at heights in excess of 3000m over sea level.
In case of Highly Specialized Equipment (EAE - Equipo Altamente Especializado), UL de México offers EAE dictum services. Issuing this dictum does not grant any right to use UL de México compliance Marks, since it indicates that equipment units are excluded of the application range covered by NOM-019-SCFI-1998, according to item 1.2 therein.
Note: Products powered by voltages of 24 V or lower are also excused, according to Article 10, Annex 2.4.1, NOMs agreement. However, UL may issue the corresponding compliance certificate upon the client's request.
Product standards can be found on the Secretary of Economy page dedicated to their standards catalog.


