What Are Some Useful Shortcuts In PCB Design
I. Shortcut keys:
Ctrl+G: Set the minimum moving space;Q: Switching to the Imperial system;V+A: Move Ctrl+Backspace with the mouse: return;Shift+ space: round corner/right Angle switch;E + D: delete it
E+E+A: Deselect;E+F+L: Reference point setting for component packaging
The above is the shortcut key used in the operation of PCB design proofing excellent customer board, can get twice the result with half the effort in the design!
Two, line rules
Line width is generally 10mil;Generally, the aperture of the needle arrangement is 32mil.Generally, 28MIL is taken as the crystal oscillator of directly inserted resistor capacitor;
Inner diameter (aperture) +1.2mm (minimum 1.0mm) = outer diameter of welding plate;Pin diameter +0.2mm = aperture of welding plate;If the diameter of the welding plate is 32mil, the diameter of the welding plate is generally set to 62mil.When the diameter of welding plate is 1.5mm (small) ≤60mil, square welding plate shall be adopted.1 mm material 40 mil;2.54 mm 100 mil material;The outer diameter size of the general welding plate = twice of the aperture size
Three, component packaging
1. AXIAL-0.4 is the most commonly used straight insert resistance package (AXIAL-0.3 can also be used)
2. RAD0.1 is the most commonly used non-polar capacitor package
3. The distance between the pins of the electrolytic capacitor is usually 100mil or 200mil, and rB. 1/.2 is selected for those less than 100uF
4, electrolytic capacitor packaging is generally made according to the size of the components
5. The LIGHT emitting diode is generally rB.1 /.2 package
6. A single row of needles encapsulates SIPxx
7. Crystal vibrator pin spacing 200mil
8. 10Pin encapsulates IDC10
9, AT89S51 MCU can be encapsulated with DIP40
10, plate making process restrictions, hole ≥0.3mm, welding plate ≥0.4mm
11. DRC check before copper coating
12, welding plate generally to fill tears, in order to increase the stability of the circuit