VXA4 Microprocessor Crystals The VXA4 series of HC-49/U packaged crystals offers the most popular crystal package for computer and peripherals' applications. Our type "A" package (HC-49/U) offers the highest level of quality at the most economical price. Vite's standard crystal tolerance (Option "B" under stability vs. temperature) is 50 PPM -20C to +70C relative to the load capacitance at +25C. All VXA crystals will operate -40C to +85 C. The "B" stability of 50 PPM is an absolute guarantee but the typical crystal is better than 30 PPM 0C to +70C and better than 75 PPM from -40C to +85C. Package Options A4 = HC-49/US 3.6 mm tall Frequency Range Standard Frequencies 3.5 MHz to 100.00 MHz See Standard Frequency Table Mode 1 = Fundamental (3.5 to 40 MHz) 3 = 3rd Overtone (20 to 100 MHz) Stability Options A = 100 PPM -20C to +70C B = 50 PPM -20C to +70C C = 100 PPM -40C to +85C D = 50 PPM -40C to +85C F = 30 PPM -20C to +70C Load Capacitance 0 = Series Resonant 1 = 16 pF 2 = 20 pF 3 = 32 pF 4 = 18 pF 5 = 10 pF 6 = 30 pF STD Calibration 25 PPM at +25C Tolerance Equivalent Series Resistance Shunt Capacitance Drive Level Crystal Tolerances to 10 PPM are available See ESR Table II 7 pf Maximum 10 to 2,000 uW Aging Standard <5 ppm/1 Packaging Typical P/N Bagged st year VXA4-1B2-20M000 A4 = HC/49US package 3.6 mm tall 1 = Fundamental Mode B = 50 PPM -20C to +70C 2 = 20 pF load Generate your own part number! We welcome your custom requests and will issue a custom part number for items that are not listed. Vectron International, 267 Lowell Rd, Hudson NH 03051-4916 Tel: 1-88-VECTRON-1 Website: www.vectron.com Dimensions in mm. Vectron International, 267 Lowell Rd, Hudson NH 03051-4916 Tel: 1-88-VECTRON-1 Website: www.vectron.com