China PCB Assembly factory Through Hole Technology of Eternity EMS The thru-hole part is still vitally important to PCB design for the following reasons: 1. Durability: Many parts that serve as an interface must have a more robust mechanical attachment that what can be achieved through surface mount soldering. Switches, connectors, fuses, and other parts that will be pushed and pulled by human or mechanical forces, need the strength of a soldered thru-hole connection. 2. Power: Components that are used in circuits that conduct high power levels are usually only available in thru-hole packages. Not only are these parts larger and heavier requiring a more robust mechanical attachment, but the current loads may be too much for a surface mount solder connection. 3. Heat: Components that conduct a lot of heat may also favor a thru-hole package. This allows the pins to conduct heat through the holes and out into the board. In some cases these parts may be bolted through a hole in the board as well for additional heat transfer. 4. Hybrid: These are the parts that are a combination of both surface mount pads and thru-hole pins. Examples would include high density connectors whose signal pins are surface mount while their mounting pins are thru-hole. The same configuration can also be found in parts that carry a lot of current or run hot. The power and/or hot pins will be thru-hole while the other signal pins will be surface mount. Eternity EMS Brief Introduction: Eternity is capable of two types of printed circuit board assembly services, both of Surface Mounted Technology and Through Hole Technology. They are full and partial turn-key services. Full turn-key covers all aspects of printed circuit board assembly, including parts procurement, quality inspections, and final PCB assembly. As an electronic contract manufacturing company established in 2005, we offer electronic manufacturing services (EMS) from design, engineering and prototyping services to new product introduction (NPI) services and mass production. Besides, Eternity EMS can provide raw materials selection and procurement, quality control, logistic and delivery and after-sale services to our customers in respect of our assembling and production of Printed Circuit Board Assembly and fully-assembled electronic products. After 16 years' development, 1300 Eternity people in three production plants have confidence to provide electronics manufacturing services to OEMs and brands all the world. Eternity accumulates manufacturing knowledge by cooperation with global leading brands, and we stay focus in the fields as communication and telecom, financial device, industrial equipment, new energy, automotive, and medical electronics. We provide PCBA and Box Build for SAMSUNG, for ABB, for BYD etc., the cooperation with leading brands not only make Eternity build integrated system like ISO9001, ISO14001, ISO45001, ISO13485, ISO16949; but also motivate Eternity to keep investing in the latest technology and equipment. In one world, Eternity EMS is your R & D partner, your production provider, your supplier manager, and your after-sale supporter.China PCB Assembly factory website:http://www.eternityem.com/pcba/pcb-assembly/