What is BS EN 60603-4 - Spacing of contacts about? 
Electrical connectors are used to join electrical conductors to create an electrical circuit. BS EN 60603-4 is a part of an international multi-series standard that focuses on aspects of connectors for electronic equipment.
BS EN 60603-4 applies to a group of related rectangular, multi-contact, two-part printed board connectors with male and female contacts in conjunction with either solder or solderless terminations (such as wrap type). All connectors have the same contact spacing using the basic grid of 1.91 mm (0.075 in).
BS EN 60603-4 meets the following needs:
- Direct replacement of a socket-connector by a two-piece mother and daughter board connector mated set, without requiring major design changes in the packaging system
- Easy access to both sides of a board without having to use plated-through holes
- High-density packaging, with components on both sides of the board, without the complication of staggered pins and termination pads
Who is BS EN 60603-4 - Spacing of contacts for? 
BS EN BS EN 60603-4 on the spacing of contacts is useful for: 
- Manufacturers of electronic devices 
- Manufacturers and suppliers of electronic connectors
- Product development teams
- Maintenance and augmentation teams  
- Companies associated with designing and installation of electronic devices 
- Fault management teams
- Quality control personnel
- Regulatory authorities
Why should you use BS EN 60603-4 - Spacing of contacts?
Electronic equipment is used in applications that rely on mechanical or electric systems for their operation. They are essential to any work on electronics systems for creating signals and capturing responses from electronic devices. There are certain specifications regarding the performance of electronic equipment. Electrical connectors are manufactured for power, data, and audio-visual applications. They can be differentiated by their specific method of connection, pinout, size, materials, contact resistance, mechanical durability, ingress protection, insulation and lifetime.
BS EN 60603-4 provides you with dimensional information that helps you with the mounting process of contacts. BS EN 60603-4 discusses characteristics of contacts that help users to manufacture highly efficient electrical connectors. BS EN 60603-4 also provides you with test schedules to verify the performance characteristics of contacts which ensures their reliability.
The guidelines in BS EN 60603-4 provide you with a standardized process of spacing of contacts that enable you to provide a superior quality product to your customers.
