The HC-49/U-S4000000ABEB is a high-quality 4 MHz quartz crystal manufactured by CITIZEN. Supreme Components International is an authorised distributor of CITIZEN components, ensuring you receive a genuine and reliable product. This crystal is housed in the HC49/U package, a standard form factor for through-hole mounting. Quartz crystals are essential components in electronic circuits, providing a stable and accurate frequency reference for oscillators and timing applications. The HC-49/U-S4000000ABEB is suitable for a wide range of applications, including microcontrollers, communication equipment, real-time clocks, and signal processing circuits. Its precise frequency and stable performance make it a dependable choice for demanding applications. Trust Supreme Components International for your CITIZEN component needs.