mechanical drilling

What does the ‘TG’ symbol signify on the PCB specification sheet?

The glass transition temperature (Tg) is crucial for PCB substrates as it marks the shift from a solid to a rubbery state, impacting pressing conditions and resulting in varying board hardness. This transition influences mechanical drilling and electrical properties, with higher Tg enhancing thermal and chemical resilience.

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Introduction to PCB microhole drilling characteristics

With the rapid development of electronic products, PCB printing has expanded to high-precision multi-layer boards with smaller apertures and hole spacing, leading to increased demand for micro-hole processing methods such as mechanical drilling, which requires operators to consider axial force and cutting torque to ensure hole quality and reduce the proportion of defective products.

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Common PCB Drilling Techniques Employed by Circuit Board Manufacturers

With advancing product performance, PCBs undergo continual updates and development, necessitating denser circuits despite shrinking sizes. Precise drilling techniques, including mechanical, laser, plasma, and chemical methods, are vital for accommodating more components efficiently while minimizing costs and time.

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