Clock reference for digital and timing-sensitive designs
The ECS-2033-040-BN is a standard CMOS-output crystal oscillator, delivering a 4 MHz square-wave clock at 3.3 V from the ECS-2033 series — the kind of tight clock reference that microcontrollers, CAN transceivers, and timing peripherals need to run their internal state machines correctly.
Frequency stability and power draw
±50ppm frequency stability over the full operating range means the accumulated timing error stays within bounds for serial communication at standard baud rates — a UART running at 115200 baud tolerates the drift without requiring re-sync on every frame.
Industrial temperature grade and 3.3 V operation
The 3.3 V supply rail is standard on most 32-bit MCUs, which means it typically runs directly from the same LDO or rail that powers the host processor — no level-shifting needed between the oscillator output and the clock input pin.
Package and board footprint
Surface-mount only — no through-hole variant in this series. Tape-and-reel packaging is compatible with standard pick-and-place assembly lines; the no-lead format requires a reflow profile with appropriate soak and peak temperatures for the package size.