The Evolution of Solderless Connectivity

Solderless PCB connectors represent a paradigm shift in high-frequency testing and measurement. Unlike traditional soldered interfaces, solderless connectors utilize precision mechanical pressure to establish reliable RF connections, eliminating thermal stress and enabling reusability. Ideal for R&D, production testing, and 110 GHz applications, these solutions ensure signal fidelity while reducing PCB damage risks.

How Solderless Connectors Work

Solderless pressure connectors employ two critical mechanisms:

• Compression/Pressure Mounts: Apply controlled force between the connector pin and PCB trace.

• Probe-Type Contacts: Use spring-loaded pins that retract upon board contact, maintaining constant impedance.
  Key Innovation: Focusimple’s proprietary two-piece fixture accommodates PCBs up to 7.62mm thick, ensuring grounding integrity without soldering.

Features & Benefits：

l  Easy to install and remove，Diverse optional types

l  Low VSWR，Low Insertion Loss

l  Rugged & Durable

l  Excellent Repeatability

Application：

l  Test & measurement

l  Research & development

l  High-speed digital component testing

l  Precision PCB board thin base material interconnection installation

Connector Types & Configurations

a) Probe Type (Stripline/Vertical)

• Design: Spring-retracting center conductor for stable trace contact.

• Use Case: High-reliability vertical interconnects for multilayer boards.

• Keyword Integration: Ideal for sma connector vertical deployments in stripline environments.

b) Compression Mount Type (Stripline/Microstrip Vertical)

• Robustness: Engineered for thicker/harder PCB substrates.

• Performance: Maintains good performance to 110 GHz.

• Applications: High-vibration test fixtures requiring solderless pressure connectors.

c) Edge Launch Type (Microstrip)

• Mounting: Edge mount 1.85 connector PCB solutions for panel-edge integration.

• Signal Path: Co-linear alignment between connector and PCB trace.

• Advantage: Optimized for >40 GHz applications; a specialized printed circuit board edge connector.

What is Microstrip & Stripline?

Stripline

▪A type of transmission line that consists of a conductor sandwiched between two ground planes, all embedded within a dielectric material

▪Excellent external EMI shielding

▪Thicker and more difficult to manufacture

Microstrip

▪A type of transmission line that consists of a single conducting strip separated from a ground plane by a dielectric layer

▪More susceptible to external electromagnetic interference

▪Easier to manufacture and cost-efficient

Solderless PCB Connectors at a Glance：

Specifications：

Solderless pressure connectors resolve the tradeoff between signal integrity and mechanical practicality in high-frequency PCB design. For engineers developing next-generation RF systems, Focusimple’s PCB solderless connector solutions deliver lab-grade performance in production environments.

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