What is a DIN Connector?
Connectors that conform to German industrial standard DIN 41612.
Board-to-board connectors with 2.54 mm pitch are commonly referred to as DIN connectors.
What is a Half Pitch Connector?
A connector with 1.27 mm contact -pitch,which is the half size of the major 1 inch(=2.54 mm) pitch,is called a half-pitch connector.
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DIN Connectors/DIN Style Connectors
Comprehensive product lineup based on the international DIN standard.

Half-Pitch SMT Connectors
Contact pitch of 1.27 mm. Supports increments of 1 mm for stacking heights of 5 to 20 mm.