Manufacturer ECS Inc. Series CSM-7 Packaging ? Cut Tape (CT) ? Part Status Active Type MHz Crystal Frequency 4MHz Frequency Stability ±50ppm Frequency Tolerance ±30ppm Load Capacitance 20pF ESR (Equivalent Series Resistance) 150 Ohms Operating Mode Fundamental Operating Temperature -10°C ~ 70°C Ratings - Mounting Type Surface Mount Package / Case HC49/US Size / Dimension 0.449" L x 0.189" W (11.40mm x 4.80mm) Height - Seated (Max) 0.169" (4.30mm)