Through-Hole PCB

H2: What is a Through-Hole PCB?

A through-hole PCB uses drilled holes and leaded components for secure solder connections, ensuring mechanical stability and heat resistance.

Key Advantages:

• Stronger connections – Ideal for high-vibration environments (military, automotive).

• Easier prototyping – Manual soldering & rework-friendly vs. SMT.

• Higher current handling – Supports large connectors & power components.

• Mixed-technology support – Combines with SMT-to-TH adapters for hybrid designs.

Common Applications:

• Power supplies & motor controllers

• Through-hole SMA connectors (RF/microwave boards)

• Industrial control systems

  
  

Through-Hole vs. SMT: When to Choose Each

Hybrid Solution: Use SMT-to-TH adapters when integrating SMT parts onto through-hole boards.

Through-Hole PCB Assembly Process

• Drilling – Precision holes for component leads (CNC or laser-drilled).

• Plating – Copper electroplating for conductivity in circuit board holes.

• Component Insertion – Manual or automated (axial/radial leads).

• Wave Soldering – Mass-soldering for high-volume through-hole assembly.

• Inspection – Automated optical inspection (AOI) for solder quality.

Specialty Options:

• Selective soldering for mixed SMT/TH boards.

• Conformal coating for harsh environments.

H2: Through-Hole SMA Connectors for RF Applications

• High-frequency stability: Gold-plated through-hole SMA connectors reduce signal loss.

• Secure mounting: Threaded interfaces withstand repeated mating cycles.

• Impedance matching: 50Ω/75Ω options for microwave & antenna boards.

• Design Tip: Pair with ground vias near connectors to minimize interference.