The Impact of Incorrect Cushioning Materials on PCBs

The Impact of Incorrect Cushioning Materials on PCBs

Printed Circuit Boards (PCBs) require proper cushioning during transport, storage, and assembly to protect their delicate components and connections. Choosing inappropriate cushioning materials can cause significant damage, compromising functionality and longevity.

Physical Damage

Materials with poor shock absorption—such as overly rigid or inelastic options—fail to mitigate impacts and vibrations. This transfers force directly to PCBs, leading to substrate bending, cracking, or breakage. Solder joints may fatigue or loosen, while components like capacitors and ICs can detach; pin-based parts risk bending or breaking.

Size mismatches worsen issues: oversized materials squeeze PCBs, deforming them (especially flexible FPCs) and potentially tearing circuits. Undersized options create gaps, causing friction that wears the solder mask, exposes copper foil, and oxidizes pins.

Environmental Risks

Non-moisture-resistant or hygroscopic materials trap humidity, leading to copper oxidation, solder rust, and short circuits (critical for high-density PCBs). Low-quality materials may release corrosive substances (e.g., sulfides) or contain impurities (e.g., chloride ions), eroding copper, plating, and solder joints—fuelling open circuits or poor conductivity.

Static-Related Harm

ESD-sensitive components (ICs, MOSFETs, sensors) suffer from non-anti-static materials (e.g., regular foam, synthetic fibers). These generate static via friction or fail to dissipate it, causing electrostatic discharge that permanently damages components, leading to PCB failure.

Latent Failures

Poor-quality materials (e.g., low-grade rubber) shrink, expand, or harden over time, exerting continuous stress on PCBs. This causes solder joint fatigue (notably in BGA/QFP chips) and can compress surface components like capacitors, leading to internal damage (e.g., electrolyte leakage).

We Shenzhen Chang Universal Electronics Co., Ltd provide very professional and trusted pcb lamination materials such as :

1.Press cushion pad----High temperature resistant,ideal for multi layer PCB lamination.

2.Steel plate----Precision steel plate with excellent flatness & thermal conductivity.

3.Carrier plate--- High hardness & flatness and stable coefficient of expansion.

4. Release film----Non-stick,heat-resistant films that reduce cleaning costs and improve production efficiency.

Why Our Lamination materials Are Ideal for PCB/CCL/HDI Production:

1.Excellent thermal and pressure resistance,

2.Improved layer registration and dimensional control,

3.Reduced risk of surface defects and microvia collapse,

4.Suitable for sequential lamination and blind/buried via stack-ups.

If you need source for High-temperature resistant materials for your PCB production, we are your best choice !