CLOCK OSCILLATOR 520-TCH5000, a Half-Size 50.000 MHz Clock Oscillator will no longer be stocked by Mouser. Once stock has been depleted, it will be available on a non-stocked basis subject to ECS minimum order requirements, pricing and standard leadtimes at the time of request. The closest replacement available for this item is 73-XO52B5000. The replacement is the same type of device and is available at a better price. 5-0300-97