The Difference Between Top-Contact and Bottom-Contact FPC Connectors
2025-04-16 10:58:34
The terms “Top Contact” and “Bottom Contact” in FPC (Flexible Printed Circuit) connectors mainly refer to the direction the FPC’s contact pads (gold fingers) face when inserted, as well as the direction in which the connector’s cover (actuator) opens. These two types are designed to accommodate different structural layouts and installation requirements. The key differences are as follows:
1. Definition Comparison:
Type | Definition | FPC Contact Pad Orientation | Applicable Installation Direction |
Top Contact | The connector cover opens forward (toward the insertion direction) | Facing the top side of the connector (cover side) | Suitable for installations with space above |
Bottom Contact | The connector cover opens backward (away from the insertion direction) | Facing the bottom of the connector | Suitable for bottom routing or limited space above |
2. Structural Features:
·Top-Contact Connector:
·The actuator opens in the same direction as the FPC insertion
·FPC contact pads face upward
·The FPC makes contact from the top; often referred to as “top contact” type
·Bottom-Contact Connector:
·The actuator opens in the opposite direction of the FPC insertion
·FPC contact pads face downward
·The FPC makes contact from the bottom; typically called “bottom contact” type
3. Practical Selection Tips:
·If the FPC routing surface in your device is on the top, choose Top Contact.
·If the routing is on the bottom, choose Bottom Contact.
·Be sure to determine the FPC contact pad orientation during the design stage to avoid insertion errors or poor contact.
4. Easy Way to Remember:
"Top Contact connects from above, Bottom Contact connects from below."
If you have a specific model, product drawing, or structural layout, I can help you determine which type is more suitable—feel free to send it over.
