Category Archives: Copper Flex Circuitry

Hot Bar Solder Lamination: What is It and Why Utilize It?

Hot Bar Solder Lamination: What is It and Why Utilize It? Our customers sometimes require a membrane keypad with a connection that calls for flex circuits directly connected to rigid boards versus using connectors. Connecting a flexible circuit directly to a printed circuit board requires a manufacturing procedure called hot… Continue Reading →

Key Flex Circuit Terms That You Should Know

Key Flex Circuit Terms That You Should Know CSI Keyboards uses copper flex circuitry in the majority of our custom keypad designs due to its excellent dielectric strength, thermal stability, chemical resistance and flexibility. Copper flex, also known as Kapton circuits, have become the superior choice over printed silver especially for outdoor… Continue Reading →

What is Silver Migration in a Membrane Switch?

What is Silver Migration in a Membrane Switch? The Case Against Printed Silver – “Silver Migration” The biggest case against using printed silver circuitry and thus using copper flex circuity is a phenomenon known as silver migration which occurs in microelectronics, components, PCB assemblies and membrane switches. Silver migration is the… Continue Reading →

Designing a Waterproof (IP67) Membrane Switch

Designing a Waterproof (IP67) Membrane Switch Many customers come to CSI Keyboards looking for a waterproof IP67 membrane switch. CSI utilizes two major design techniques in order to waterproof a membrane switch: utilizing a frame seal gasket; and the use of copper flex circuitry. There are other methods and ways… Continue Reading →

Contact UsEmailQuote Form