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What does the 'T' code represent in a drill file for PCB manufacturing?

easy🧠 Conceptual Q1 of 15
PCB Design - Manufacturing Output
What does the 'T' code represent in a drill file for PCB manufacturing?
ATool number and size
BTemperature setting
CThickness of the PCB
DType of solder mask
Step-by-Step Solution
Solution:
  1. Step 1: Understand drill file syntax

    The 'T' code defines the tool number and its diameter used for drilling.
  2. Step 2: Identify the meaning of 'T' in context

    It specifies which drill bit size is active for the following drill coordinates.
  3. Final Answer:

    Tool number and size -> Option A
  4. Quick Check:

    Drill file 'T' code = Tool number and size [OK]
Quick Trick: Remember 'T' means tool size in drill files [OK]
Common Mistakes:
MISTAKES
  • Confusing 'T' with temperature
  • Thinking 'T' relates to PCB thickness
  • Assuming 'T' is solder mask type

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