ECS-3961 (5V) and ECS-3963 (3.3V) miniature SMD cr.
ECS
ECS-3961 - SMD CLOCK CRYSTAL
ECS-3961 (5V) and ECS-3963 (3.3V) miniature SMD crystal controlled oscillators. Package is seam welded with a metal lid. ECS-3961/3963 SMD Clock Osci.
