Conformal Coating Removal and Component Recovery for Electronic Assemblies

For electronics manufacturers, component shortages and extended lead times remain an ongoing challenge. When critical parts become difficult to source, businesses are often forced to explore alternative ways of maintaining production and supporting existing products.

One option that is frequently overlooked is recovering valuable components from existing conformally coated electronic assemblies.

The Continuing Challenge of Component Availability

The electronics industry has faced significant disruption in recent years. Growing demand from sectors such as AI, industrial automation, electric vehicles, aerospace, and telecommunications continues to place pressure on the supply of many electronic components.

As a result, manufacturers can face:

• Extended lead times for critical components
• Increased purchasing costs
• Delays to production schedules
• Engineering redesigns to accommodate alternative parts
• Difficult decisions around stock allocation and inventory management

While forecasting, stock holding, and alternative sourcing strategies all play an important role, these approaches cannot always solve the problem when components are simply unavailable.

Don't Overlook the Components You Already Own

Many organisations have valuable components sitting on existing assemblies that are no longer required.

These may include:

• Development and prototype boards
• Qualification and test assemblies
• Obsolete products that are being retired
• Customer returns where the assembly is no longer needed
• Boards affected by design changes
• Spare stock from cancelled projects

In many cases, the electronic components themselves remain perfectly functional and retain significant value. The challenge has traditionally been accessing those components safely, particularly when the assembly has been protected with a conformal coating. 

What is Conformal Coating Removal?

Conformal coating removal is the process of removing protective coatings from printed circuit boards (PCBs) and electronic assemblies. It is commonly required when assemblies need rework, repair, modification, failure analysis, component replacement, or component recovery.

While conformal coatings are designed to protect electronics from moisture, chemicals, dust, and harsh operating environments, there are situations where safe and controlled coating removal becomes essential.

Different coating types, including acrylic, polyurethane and hybrid materials (e.g. Electrolube DCA), require different removal techniques. Using the correct process helps ensure components and PCB substrates remain undamaged during the operation.

Conformal coating removal can be carried out on a specific area of a PCB assmebly, allowing access to individual components or circuits while leaving the surrounding coating intact. Alternatively, where required, the coating can be removed from the entire assembly to facilitate more extensive rework, repair, modification, or component recovery.

The most appropriate approach will depend on the coating type, assembly design, and the intended outcome of the process.

How Conformal Coating Removal Supports Component Recovery

Modern conformal coating removal processes make it possible to remove coating materials from a PCB without affecting surrounding components or the substrate.

Once access is gained, components can be:

• Removed from the assembly
• Inspected for condition
• Electrically tested where appropriate
• Reused in development, testing, repair, or production applications

This can provide manufacturers with an additional source of components at a time when replacement parts may be expensive, difficult to obtain, or subject to lengthy lead times.

Why Manufacturers Choose Component Recovery

For obsolete components, end-of-life devices and semiconductors with extended lead times, recovering parts from existing assemblies can provide a practical alternative to redesigning a product or sourcing stock through the open market.

Recovering components from coated assemblies can offer several advantages:

• Reduce dependence on uncertain supply chains
  Rather than relying entirely on external suppliers, organisations may be able to recover components from assets they already own.
• Lower costs
  When components are scarce, prices can increase significantly. Recovering usable components can help reduce the need for expensive spot purchases.
• Support production continuity
  Even a small quantity of recovered components may be enough to complete urgent builds, maintain service support, or keep production moving while waiting for new stock.
• Reduce waste
  Recovering high-value components extends the useful life of existing materials and can help reduce electronic waste.
• Preserve hard-to-find parts
  For legacy products, military applications, industrial equipment, or long-life systems, replacement components may no longer be manufactured. Recovery can provide access to parts that would otherwise be difficult to replace.

Is Component Recovery Right for Every Application?

Component recovery is not suitable for every component or every end-use application. Factors such as component type, condition, application requirements, and traceability requirements all need to be considered.

However, for many manufacturers, it can be a practical option that sits alongside traditional procurement strategies and helps build greater resilience into their supply chain.

Conformal Coating Removal for Rework and Repair

Component recovery is only one reason for removing conformal coating. Manufacturers may also require access to coated assemblies for rework, engineering modifications, component replacement, fault investigation, failure analysis and product upgrades.

Specialist Conformal Coating Removal Services

Successfully removing conformal coating requires more than simply stripping material from an assembly. Different coating chemistries, component types, board designs, and end-use requirements all need to be carefully considered to achieve the desired outcome without causing damage.

At Chiltern Connections, we have the knowledge, experience, and specialist facilities required to remove a wide range of conformal coatings safely and effectively. Our team understands the challenges associated with coated electronics and can assess the most appropriate removal method for each application, whether the objective is component recovery, rework, repair, failure analysis, or modification of an existing assembly.

Whether you need a full board stripped of conformal coating, or just particular parts, we can help. We can selectively remove coatings of components or particular parts for reuse, or we can remove coatings from the complete board.

Drawing on decades of experience in electronic protection and manufacturing processes, we work with customers to recover valuable components, access difficult-to-reach areas of assemblies, and support the ongoing performance and reliability of their products.

As component availability continues to challenge manufacturers, conformal coating removal can provide a practical and cost-effective solution. With the expertise, equipment, and facilities to carry out the process correctly, Chiltern Connections can help you maximise the value of existing assemblies and recover components that might otherwise be lost.

Frequently Asked Questions