Through-Hole PCB

Our through-hole PCB technology delivers unmatched mechanical strength, ideal for industrial, automotive, and power electronics where reliability is critical. Supported by professional PCB manufacturing services, we ensure stable production and consistent quality for all through-hole PCB projects.

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

Factor	Through-Hole PCB	Surface Mount (SMT)
Mechanical Strength	Excellent (leads anchored through board)	Moderate (solder-only bond)
Component Size	Larger (e.g., axial resistors, SMA connectors)	Miniature (01005 chips)
Thermal Performance	Better heat dissipation	Requires thermal vias

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.

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.

Completed through-hole PCBs are fully compatible with professional PCB assembly services for robust and reliable electronic module production.