Hot Bar Soldering Design Rules

Hot bar reflow soldering is a selective soldering process where two pre fluxed solder coated parts are heated using a heating element called a thermode or a hot bar to a sufficient temperature to melt the solder.

Hot bar soldering design rules.

The connection of the layers are favorably produced with flexible circuit carriers and or foil connectors these connections are prepared mostly by hot b ar reflow soldering. The temperature of the stamp transfers the required heat into the joint to be soldered. Flex and pcb designs 1109 08 2010. Hot bar reflow soldering bonding fundamentals technical articles and whitepapers blogs videos training information and more.

Excessive differences in the heat continue reading pcbs. Flex carriers and foil connectors. Design tips for successful hot bar reflow. Although normal solder will melt at 180 c ideal solder temperature is above 220 c to get a good flowing and wetting behavior but below 280 c to prevent burning of the solder.

Hot bar reflow soldering systems. Solder must be pre tinned on pcb prior to hot bar process start point for screen printing is a 150 microns thick stencil with a mask opening that results in a 40 pad coverage for small pitch applications it is recommended to pre tin the parts by electro plating as being the most accurate technology. Hot bar reflow soldering. Hot bar soldering in this method resistance soldering a heated stamp also cal led bar or thermode is pressing with an adjustable programmable force on the two parts to be joined one lying on top of the other.

But some materials ceramic substrates in particular need to be heated in a more controlled fashion to minimize the chance of cracking. Mobile electronics such as telecommunications equipment as well as the electronics in motor vehicles require increasing packing density and thus arrangement of the circuits in multiple layers. Design tips for successful hot bar reflow soldering. Hot bar touches the leads 400 c hot bar touches kapton or 500 c ceramics and mc pcb soldering.

3 layouts for hot bar reflow soldering.