Selecting the Right Cushioning Material Sizes to Maximize PCB Protection

Selecting the Right Cushioning Material Sizes to Maximize PCB Protection

Choosing appropriate sizes for cushioning materials is crucial to safeguarding PCBs during transportation, storage, and handling. The key lies in three core principles: tight conformity, reserved buffer space, and targeted reinforcement of vulnerable areas.

First, the cushioning material should slightly exceed the PCB’s overall dimensions—typically by 5-10mm on each side. This ensures full coverage of edges and corners, which are prone to damage, preventing partial exposure or collisions caused by shifting during transit. For PCBs with protruding components like connectors or heat sinks, the cushioning thickness must be increased according to the component height to avoid compression damage.

Second, the size must align with the packaging or storage space. When used inside boxes, cushioning materials should fill gaps between the PCB and box walls (keeping gaps under 3mm) to minimize shaking. For stacked PCBs, interlayer cushioning needs uniform thickness (2-5mm, adjusted by weight) to prevent uneven pressure and deformation.

Third, vulnerable areas require reinforced protection. Precision components such as BGA or QFP chips demand locally thicker cushioning (1-2mm higher than the components) to form dedicated support. For edge-mounted solder joints and pins, grooved or notched cushioning designs can match the edge contours exactly, reducing friction and wear.

In summary, size selection must consider the PCB’s structure, weight, and transportation environment. A combination of full enclosure and targeted reinforcement ensures optimal cushioning effectiveness.

We Shenzhen Chang Universal Electronics Co., Ltd has developed & self - produced NAWES MAT Cushion Pad,

It’s size can be customized,the thickness (1.0 - 10 mm) is accepted according to production needs, and the performance can be enhanced.

1. Excellent high temperature resistance,can work at 260 ℃ for a long time without carbonization

or embrittlement.

 2.Superior buffering effect,uniform heat conduction,stable expansion and contraction,consistent

expansion coefficient and tear -resistant.

3.Good flame - retardant performance, its components are non - toxic and odorless,dust - free.

4.Pressure - resistant and can be used multiple times, offering high cost - effectiveness. The number of usage times ranges from 200 to 500 times, which reduces losses and cuts costs by 20 -30%.