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 -20°C to +70°C relative to the load capacitance at +25°C. All VXA crystals will operate -40°C to +85° C. The "B" stability of ±50 PPM is an absolute guarantee but the typical crystal is better than ±30 PPM 0°C to +70°C and better than ±75 PPM from -40°C to +85°C. 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 -20°C to +70°C B = ±50 PPM -20°C to +70°C C = ±100 PPM -40°C to +85°C D = ±50 PPM -40°C to +85°C F = ±30 PPM -20°C to +70°C 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 +25°C 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 -20°C to +70°C 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