(85g) tube of the cheaper brands for as low as $1 - $2 (US$).Īdded bonus is that it comes in a variety of colours, so you may want to seal positive terminals with RED & Negative terminals with Black. This high-speed PCB design rule is only correct in very.

The rule basically states conditions under which you don’t need to calculate trace impedance by stating: if the length of a trace is less than 25 of the distance traveled by a digital signal, then the trace impedance does not matter. No need to waste money on the high-end ranges, you can probably get a 3oz. CircuitMaker using this comparison chart. This rule is also known as the 25 rise time rule. I've been insulating my project boards (& exposed contact spots) with a readily available & reasonably cheap product which is resistant to extreme temperatures & most oils & some solvents too - it's a silicon-based automotive sealant which is commonly known as 'GASKET MAKER' or 'High Temperature RTV Silicone'. I realise this reply is about a decade too late to help the O.P,īut I'm replying for future reference to those who might need it.įirstly, Never use doublesided tape or any tape other than electrical insulation tape or self-amalgamating insulation tape to try insulating electrical circuits, the adhesive on some tapes may be conductive - which means that your project may go up in a Puff of smoke (& probably a bright flash & a loud bang too)

Altium circuit maker