403C35D12M00000

Crystals Overview

The CTS-Frequency Controls part number 403C35D12M00000 is a fundamental mode MHz crystal resonator designed for surface mount applications. It operates at a nominal frequency of 12 MHz with a frequency tolerance of ±30 ppm and a stability of ±50 ppm. The component features a load capacitance of 18 pF and an equivalent series resistance (ESR) of 150 Ohms, as documented by Mouser. It is housed in a compact 4-SMD, No Lead package with dimensions of 3.2 mm x 2.5 mm and a maximum seated height of 0.031 inches (0.80 mm). The device supports base harmonic operation and is rated for an operating temperature range of -20°C to +70°C.

Crystals Feature Summary

• Surface mount design utilizing a 4-SMD, No Lead package for automated assembly integration.
• Fundamental mode crystal operation providing stable frequency generation for timing circuits.
• Compliant with RoHS3 specifications and REACH regulations for environmental standards.

Crystals Applications

• Microcontroller unit (MCU) clock sources
• Human-machine interface (HMI) display systems
• External peripheral timing synchronization

Crystals Procurement Notes

Verify the specific datasheet version when ordering, as documentation may list ESR values of either 60 Ohms or 150 Ohms for this part number across different distributors. Confirm that the 18 pF load capacitance matches the target circuit design requirements. Ensure the -20°C to +70°C industrial temperature range is sufficient for the intended application environment before finalizing procurement.

Crystals Selection Notes

Select this component for designs requiring a 12 MHz reference signal in space-constrained surface mount layouts. The 18 pF load capacitance must align with the oscillator circuit's external capacitor values to maintain the specified ±30 ppm tolerance. Consider the 150 Ohm ESR specification if driving low-power oscillators, ensuring the circuit can sustain oscillation within these impedance parameters.

Crystals Part Context

This component belongs to the CTS 403 Series of crystals, which are characterized by their small 3.2mm x 2.5mm footprint. The series is engineered for general-purpose timing applications where moderate size reduction is required compared to larger through-hole alternatives. It serves as a passive frequency control element distinct from active oscillators like the CA20 series.

Crystals Replacement Considerations

Direct substitute part numbers include 403I35D12M00000 from CTS-Frequency Controls. Cross-manufacturer replacements such as TXC Corporation 7V-32.000MAAJ-T exist but require verification of mechanical and electrical parameter alignment.