Specifications: 1) Nominal frequency: 8.000MHz - 125.000MHz 2) Frequency tolerance: ?0ppm to ?0ppm 3) Load capacitance: 20pf typ. 4) Aging (first year): ?ppm max. Features: 1) These crystal units satisfy extremely strict temperature characteristics specifications and feature superlative frequency traceability and shockproofness 2) Surface-mount type of RUM-1J, RUM-5J and RUM-4J crystal resonators with metal jacket 3) These are highly reliable surface mount type crystal units that can be widely used in communication equipment, OA equipment, telecom equipment and measuring instruments