I was wondering what is the history for having convex and concave resistor arrays.
- Why are there 2 variants developed in the first place?
- And why do they continue to co-exist if, apparently, convex has mostly advantages over concave ones?
Summary of convex resistor array advantages from the EEVBlog article:
- 5-sided vs. 3 sided termination gives better solderability
- A larger gap between terminations reduces solder bridging
- Better view for visual inspection
- Larger terminations increase reflow soldering self-alignment
- Better part availability (70% of the market)
- Lower cost in general