Connector Structure and Part Names
Here is a case of FPC connector to illustrate its composition.
A connector mainly consists of an actuator, metal fitting, contact, and insulator.
See below for each application and material. The meaning of each part is explained in the Glossary.
Components and Related Terms
|Actuator||Slider||Parts to lock or temporary hold when mated.
In case of FPC/FFC connector, parts that fix or hold the cable.
|Resin molded parts.
The insulator that forms the entire connector and protects the contacts (wires).
|Contact||Terminal||Metal parts to provide contact and energizing functions.|
|Tail||Lead||Where the contacts/terminals are soldered.|
|Coplanarity||Flatness||Maximum height from board surface to contact tail.
Variance of lead to board surface.
|Pitch||-||Distance between terminals.
Set by miswiring prevention and rated current/voltage.
|Plug / Receptacle||Male / Female
Headers / Sockets
|Plug: The part to insert the contact. The shape that is on the insertion side when it is mated.
Receptacle: The part into which the contact is inserted. The shape that becomes the receiving side when mated.
|FPC||Flex cable||Short for Flexible Printed Circuits. A cable with printed circuits.|
|FFC||Flex cable||Short for Flexible Flat Cable. A cable consisting of flat laminated wires.|
|ZIF||Short for Zero Insertion Force. When inserting or removing the FPC/FFC, the connector terminal and conductor of FPC/FFC are brought into contact and conducted by operating a locking mechanism such as an actuator/slider. A connector with reduced insertion and removal force.
Connectors without ZIF structure. Insertion force is required when inserting the FPC/FFC into the connector. The connector terminal and conductor of the FPC/FFC are in constant contact from the moment they touch the terminal at the insertion port until they are pushed in. While the workability and cost are good, the cable retention force can be weak in case of small pin counts, and a high insertion force is required for high pin counts.
|Vertical||The connector mating direction is perpendicular to the mounting board surface.|
|Right Angle (RA)||The connector mating direction is horizontal to the mounting board surface.|
Terms for Failure Cases
|Weld||A line that forms a joint when molten materials, such as resin, solidify.|
|Contamination||Foreign matter entering the resin. Dirty resin.|
|Short shot||A lack of resin filling.|
|Burrs||A protrusion that pops out of its normal shape.|
|Solder fillet||The shape when soldered.|
|Blisters||A blister-like phenomenon on the surface of the resin. Also called a bubble.|
Learn More About Connector Terminology Here Glossary of Electronic Components
Q. What is the name of (1) to (3)?
(1) Parts to lock or temporary hold when mated.
(2) Metal parts to provide contact and energizing functions.
(3) Resin molded parts.
Answer (Click to Check)
- A. (1)Actuator (2)Contact (3)Insulator
List of Connector Trivia Articles
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