SMD Connector rework

Rework of SMD Connectors

Author: Dan Lilie

Abstract: Due to their reduced space requirements, miniaturized SMD connectors are increasingly being used for small component assemblies, for example, found in mobile devices. Large SMD connectors and plugs are also widely spread. An example here could be the PCI express connector typically found on motherboards and server boards. The length on the connector is a particular challenge here, because it has a direct influence on handling, heat distribution, and application of the solder paste. There are significant differences in terms of layouts and shapes, sizes, used materials (affects allowed maximum temperature), surface conditions, design of contact areas and pins (symmetric/asymmetric, open/covered, number, shapes, pitch, etc.). Infrared systems can be quickly stretched to their limits in this case due to the energy input through dark and matte surfaces of the connectors. Such surfaces reflect the energy which must be then transferred through the device in to the connectors. Their longer form does not completely allow a targeted energy input through the infrared spots, which usually leads to melted connectors and burned circuit boards. Component handling is yet another challenge. BGAs with mainly flat surfaces are easy to pick up with a vacuum tool, whereas connectors are better to pick up with a clamping tool.

Your Sales Contact James Bishop

Finetech USA/East Coast
+1 603 627 8989
Send an email

Full access with a free user account

With an user account you get:

  • instant access to all product flyers
  • access to technical data sheets (after activation)
  • access to technical papers and white papers (after activation)

Download now
Your Sales Contact James Bishop

Finetech USA/East Coast
+1 603 627 8989
Send an email

Full access with a free user account

With an user account you get:

  • instant access to all product flyers
  • access to technical data sheets (after activation)
  • access to technical papers and white papers (after activation)

Non-Business Email Address Detected
We strongly recommend to use a business email address for the registration. Our IT security policy restricts the use of public email addresses. You may not receive a response.