What is BS EN 140402-801 - Fixed low power wire-wound surface mount (SMD) resistors about?  
BS EN 140402-801 discusses fixed low power wire-wound surface mount (SMD) resistors that specify the test methods for conducting tests and ensure that different surface mounting devices (SMDs) can be attached at the same place for the mounting process while assembling.
Various parameters of this component are precisely defined in BS EN 140402-801. Unspecified parameters may vary from one component to another.
Who is BS EN 140402-801 - Fixed low power wire-wound surface mount (SMD) resistors for? 
BS EN 140402-801 on fixed low power wire-wound surface mount (SMD) resistors is useful for: 
- Component manufacturers
- Manufacturer of electronic devices
- Manufacturer of electronic circuits
- Electronic engineers
- Computer hardware industry
Why should you use BS EN 140402-801 - Fixed low power wire-wound surface mount (SMD) resistors?  
Surface-mount technology is a method that helps in mounting the electrical components directly on the surface of printed circuit boards.
BS EN 140402-801 helps in designing the surface mounting components (SMDs) which result in the durability of component marking. BS EN 140402-801 specifies the general requirement for the components which help to withstand and maintain the reliability of the assembly.
The soldering process ensures resistivity to marking, cleaning solvent, and resistance to soldering heat. BS EN 140402-801 determines the performance of the surface mounting components (SMDs). BS EN 140402-801 will help in manufacturing resistors that are stable and have good temperature and time tolerance.
What’s changed since the last update?
BS EN 140402-801:2015 supersedes BS EN 140402-801:2005 which is withdrawn. BS EN 140402-801:2015 includes some technical changes with respect to BS EN 140402-801:2005. These include: 
- Adoption of P70 as the rated dissipation, leaving the prior used P25 as an additional information
- For style RW1607M, increase of P70 to 2,4 W, with P25 = 3,0 W
- Introduction of a test on the resistance to electrostatic discharge (ESD)
- Introduction of code letters for the temperature coefficient (TCR) as in BS EN 60062:2005
- Revision of ordering information
- Adoption of the IECQ rules of procedure according to QC 001002-3:2005
- Revision of the sample quantities and the sequence of tests
