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Why Consider Using Through Hole Printed Circuit Boards?

Why Consider Using Through Hole Printed Circuit Boards?

In the printed circuit board business, there are two primary ways to mount components onto the circuit board: through-hole mounting and surface mounting. Through-hole mounting is the older technology and requires the circuit board manufacturer to drill holes through the PCB and place leads into the holes. More recently, surface mounted technology has taken over the field.

Through-Hole Components

Through-hole components come in one of two types of leads, radial and axial. Axial through-hole components run along the axis of symmetry of the component while radial components protrude in parallel from the same surface on a board.

Components of Surface Mount Technology

When you look at any modern PCB design, you will see SMT technology in most instances. Surface mount technology (SMT) is the most commonly used technology today. These types of boards and components have very small or no leads at all as their primary purpose is to be soldered directly on the surface of a PCB during the design process. This method allows for components to be much smaller, allowing for greater density and better overall performance on a smaller circuit board.

With surface mounting offering so many benefits, why even consider through hole flex printed circuit boards?

The reason is that through hole mounting offers stronger mechanical bonds. This makes through hole flex printed circuit boards the better option for devices that are designed to undergo major stresses, like sudden accelerations, collisions, or extreme temperatures. This makes them worth considering for military, automotive, and extreme sports applications.

Yun Industrial Acme PCB Assembly is capable of two types of printed circuit board assembly services. They are full and partial turn-key services. Full turn-key covers all aspects of PCB fabrication and assembly, including manufacture of PCBs, parts procurement, quality inspections, and final PCB assembly.

Conformal Coating Spray

The Growing Importance of Conformal Coating in PCB Protection

Printed Circuit Boards (PCBs) are at the heart of modern electronics—but as devices become smaller, more powerful, and more widely used in harsh environments, protecting these sensitive components has become more critical than ever. That’s where conformal coating in PCB protection steps in as a game-changer.

Whether it’s a consumer product exposed to daily wear or a military-grade device deployed in extreme climates, PCBs need an added layer of protection. Conformal coating provides exactly that: a thin, durable film that safeguards electronics from moisture, dust, chemicals, and temperature extremes without compromising performance or size.

Solder Mask on Printed Circuit BoardsWhat Is Conformal Coating?

conformal coating maskingconformal coating maskingConformal coating is a protective chemical layer applied to the surface of a PCB to create a barrier against environmental contaminants. It’s “conformal” because it conforms to the shape of the board and its components, coating even hard-to-reach areas without needing bulky enclosures.

At Board Assembly, we apply conformal coatings using precise, industry-approved techniques that ensure full coverage without interfering with the function or accessibility of electronic parts.

Why Is Conformal Coating Becoming More Important?

As electronics continue to expand into sectors like automotive, aerospace, defense, and IoT devices, the environments these PCBs operate in are becoming more unpredictable and challenging.

Here are a few key reasons conformal coating is gaining traction:

  • Moisture & Corrosion Resistance: In humid or marine environments, moisture can cause corrosion, short-circuits, and long-term failure. Conformal coatings seal off the PCB surface, keeping moisture at bay.

  • Chemical Protection: In industrial settings, exposure to cleaning agents, fuels, or harsh chemicals is common. A conformal coating acts as a shield, preventing chemical damage.

  • Dust & Debris Protection: For electronics in outdoor or manufacturing environments, dust accumulation can hinder performance. Coatings protect against particulate buildup.

  • Extended Product Life: By protecting the PCB from environmental damage, conformal coatings significantly increase product reliability and longevity—essential for industries where equipment failure is not an option.

Applications Across Industries

From automotive control units to aerospace avionics, and from wearable medical devices to outdoor smart home systems, conformal coating in PCB protection is now a standard best practice in many industries. As miniaturization and high-performance demands increase, protective coatings are no longer optional—they’re essential.

Why Work With Board Assembly?

At Board Assembly, we offer advanced PCB assembly solutions that include precision-applied conformal coatings to ensure your product performs reliably in any environment. Whether you need protection from moisture, vibration, chemicals, or dust, our team ensures your PCB is ready for real-world conditions.

Want to learn more about how conformal coating can improve your product’s performance and durability? Contact us today to discuss your PCB protection needs.