How do you solder a BGA package?
BGA Soldering by Hand
- Apply Flux Paste (Not Liquid Flux) on to the pad.
- Place solder balls very carefully on the pad.
- Apply paste flux to the bottom (soldering side) of the BGA package.
- Carefully place the BGA Package on the solder balls.
- Preheat and then apply Hot Air with Hot Air Blower from both top and bottom.
What is good flux?
1. SRA Rosin Paste Flux– Overall Best flux for circuit boards. This petrolatum-based soldering flux is one of the most popular and ideal fluxes for electrical and electronic repairs. SRA is a highly popular brand that offers high-quality made in the USA most Products.
What kind of solder to use for Maxim BGA?
A low-residue, no-clean solder paste is recommended for mounting BGA packages. Type III or IV solder pastes are best suited for the typical pitch used in Maxim’s modules. Nitrogen purge is recommended during solder reflow. Follow the paste supplier’s recommended stencil clean frequency for respective solder pastes.
Is it possible to hand solder a BGA without solder balls?
No. Depending on the chip the extra length of wire may cause issues especially with high frequency signals. Since you want to solder the chip back in place on the board, the amount of tinning and solder you add to the board and chip is crucial to ensure no shorts no cracks no uneven heating.
Can a pick and place machine be used for BGA?
Also, it is recommended to do a post-printing solder inspection to check for print quality. A standard pick and place machine with 0.05mm accuracy can be used for placing the BGA modules on the printed solder. Low mounting speed is recommended to prevent the paste from squeezing out.
What kind of pins are used in Maxim BGA?
Maxim BGA packages use solder mask-defined (SMD) pins/ balls. Two types of land patterns are used for surface-mount devices: Solder Mask-Defined (SMD) pads have solder mask openings that are smaller than metal pads.