Solder Stencil Machine

This is important to stop solder defects from forming such as bridging and solder beads.

Solder stencil machine.

My overall thought is if you are doing less than 100 boards plunger all the way. Most apertures are designed to be slightly smaller than the pads typically 2 thou reduction all round to provide a good gasket seal between stencil and pcb but some apertures need a special design to deposit less paste on the inner edge of the part to reduce the possibility of mid chip solder balls. The dispense control you get from syringes keeps messes low. It is also compatible with most reusable stencil frame systems including lpkf zelflex vectorguard alpha tetra the wizzard and many others.

Both options do require practice. Ddm novastar can provide a stencil printer in manual to automatic configuration with frame or frameless construction designed for low to medium volume smt production on areas up to 18 457mm. The proto pcb stencil maker home of the kapton polyimide and stainless steel laser cut solder paste stencils for prototype and batch pcb runs. Normal cloth wipe cleaning of stencils cannot completely remove solder paste especially in fine pitch applications as a small amount of solder balls have a tendency to adhere in the corners of the apertures.

By hand no machines in the mix. I have done both methods stencil and with solder paste plungers. Each pcb requires a specific amount of solder that s why our smt stencil printer machines are equipped with squeegee blades. Sawa stencil cleaners are widely used in the japanese electronics industry to ensure high yields when screen printing solder paste onto printed circuit boards.

Soldering desoldering rework products solder stencils templates are in stock at digikey. Stencil machines hold the metal cut stencil flat and taut so that you dont have any shifting or curling while you try to lay paste down. Soldering desoldering rework products ship same day. The good ones have a fixture so you can always get the same alignement every time speeding up your stenciling time down to under a minute per pcb.

Serving the maker community since 2013 focusing on smt and smd based stencils for solder paste electronic circuits and electronic design applications. Squeegee blades are used to spread the solder paste uniformly across the printed circuit board. The source for cheap pcb solder stencils and foils. A mandatory step in the pcb assembly process represents the application of solder paste to the pcb.

Critical to pcb smt assembly and the first step in the paste place reflow process is the accurate deposition of solder paste with a stencil printing machine. Stenciling is far more messy and unnerving to do.