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General Printed Circuits Boards Design Tips
PCB Design Tip 1: LABEL YOUR PCB
Include your TEAM NUMBER & COURSE CODE
Put it on Top Overlay
Include your TEAM NUMBER & COURSE CODE
Put it on Top Overlay
PCB Design Tip 2: Be careful with your power nets
Place decoupling caps near microcontrollers and other ICs, to help reduce noise on your power-supply line. How much capacitance? If the datasheet don’t specify an amount, start with 10-100nF, then measure your supply-line using a CRO
Place decoupling caps near microcontrollers and other ICs, to help reduce noise on your power-supply line. How much capacitance? If the datasheet don’t specify an amount, start with 10-100nF, then measure your supply-line using a CRO
PCB Design Tip 3: Orientate polarised components sensibly
PCB Design Tip 4: Where did that component go?
PCB Design Tip 5: Make sure you draw a PCB border on Mechanical Layer 1
PCB Design Tip 6: Make sure you turn on all USED layers when you submit your PCB for manufacturing!
PCB Design Tip 6: Make sure you turn on all USED layers when you submit your PCB for manufacturing!
PCB Design Tip 7: Don’t use tracks at right angles, they are a common point of failure when the board is being routed
PCB Design Tip 8: If you make mistakes on your board, it is possible to correct them with PCB hacks
• Cut tracks with a sharp knife.
• Bridge tracks/pads with fly-wire.
• File/cut your board down to size. Wear a mask.
• Drill new mounting holes (if you forgot them!)
• Cut tracks with a sharp knife.
• Bridge tracks/pads with fly-wire.
• File/cut your board down to size. Wear a mask.
• Drill new mounting holes (if you forgot them!)
PCB Design Tip 9: Use oval shaped solder pads instead of circular pads
PCB Design Tip 10: Use long solder pads for surface mount devices.
PCB Design Tip 11: Learn how to use the Bill of Materials tool!
You can keep track component details such as:
• Part Manufacturer
• Supplier (and cost)
• Supplier order number
• Datasheet URL
• etc
You can keep track component details such as:
• Part Manufacturer
• Supplier (and cost)
• Supplier order number
• Datasheet URL
• etc
PCB Design Tip 12: Spend lots of time setting up your PCB rules! Eg
• Set your Power Nets to have a minimum track
width of 18mil.
• Set your ground plane to have a larger
clearance constraint than usual.
PCB Design Tip 13: Make sure you check the PCB manufacturing rules!
Or your board will not be manufactured!
PCB Design Tips
• Use a sensible number of drill-hole sizes. (Consolidate with
other teams).
• Don’t forget mounting holes!
• If your PCB has a background layer, delete it!
• Take your time (and allocate a lot of it). You can’t do a PCB
design the night before a batch is due.
• Set your Power Nets to have a minimum track
width of 18mil.
• Set your ground plane to have a larger
clearance constraint than usual.
PCB Design Tip 13: Make sure you check the PCB manufacturing rules!
Or your board will not be manufactured!
PCB Design Tips
• Use a sensible number of drill-hole sizes. (Consolidate with
other teams).
• Don’t forget mounting holes!
• If your PCB has a background layer, delete it!
• Take your time (and allocate a lot of it). You can’t do a PCB
design the night before a batch is due.
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