It uses the standard 0.100" (2.54 mm) pitch on both rows and between rows, making it a direct fit for breadboard-compatible layouts and common 0.100" grid prototyping boards.
The 0.100" (2.54 mm) pitch is the industry-standard spacing for 0.025" square posts — the footprint is a 30-position dual-row pattern of 0.040" plated-through holes on a 0.100" grid. The 110 V rating provides adequate creepage for low-voltage board-level signals but is not intended for mains or high-voltage bus work. The tin mating finish (100.0 µinch) is cost-effective for connections that mate once or a few times in the product life — it does not offer the low-fretting corrosion resistance of gold for frequent disconnect/reconnect cycles.