Printed Circuit Boards (PCBs) are designed to provide structural support for electronic components while also facilitating electrical connections. Their strength is measured by several key parameters, including bond strength, flexural strength, and tensile strength.
Based on the provided reference from EDCOR Electronics, the strength specifications for a PCB (specifically 0.125 inches thick for flexural and tensile strength measurements) are as follows:
Key PCB Strength Parameters
Here are the typical strength values for a PCB:
| Parameter | Value | Explanation |
|---|---|---|
| Bond strength | > 1,000 kg (2,200 lb) | Measures how well layers (like copper foil) are bonded together. |
| Flexural strength (A; 0.125 in) - LW | > 440 MPa (64,000 psi) | Resistance to bending along the "Lengthwise" direction of the material. |
| Flexural strength (A; 0.125 in) - CW | > 345 MPa (50,000 psi) | Resistance to bending along the "Crosswise" direction of the material. |
| Tensile strength (0.125 in) - LW | > 310 MPa (45,000 psi) | Resistance to pulling or stretching along the "Lengthwise" direction. |
These values indicate the minimum strength a PCB must possess under specified test conditions, demonstrating its ability to withstand various mechanical stresses encountered during assembly and operation. The "LW" and "CW" designations refer to the orientation relative to the material's manufacturing direction, as PCB laminates can exhibit anisotropic properties.
This data provides a clear picture of the robust mechanical characteristics of standard PCBs.
Printed Circuit Boards (PCB) - EDCOR Electronics Corporation
