CSM1Z-A5B2C3-200-4.0D18

Crystals Overview

The CSM1Z-A5B2C3-200-4.0D18 is a fundamental parallel quartz crystal manufactured by Cardinal Components Inc. It operates at a nominal frequency of 4.0 MHz with a tolerance of ±30 ppm and stability of ±50 ppm. The component features a load capacitance of 18 pF, an equivalent series resistance of 200 Ω, and a maximum drive level of 1000 µW. Designed for surface mount installation, it utilizes the HC-49/US package format with dimensions of 11.60 mm length, 4.70 mm width, and a maximum height of 4.30 mm. The unit supports an operating temperature range from -20°C to +70°C and complies with RoHS standards.

Crystals Feature Summary

• Utilizes AT-cut quartz technology for stable oscillation performance
• Features a low-profile surface mount design compatible with automated assembly
• Encapsulated in a standard HC-49/US form factor for reliable mounting

Crystals Applications

• General-purpose clock signal generation in electronic circuits
• Timing reference sources for microcontroller systems
• Frequency control in consumer electronics devices

Crystals Procurement Notes

Verify that the replacement part matches the specific 200 Ω ESR requirement, as this value differs significantly from common 50 Ω or 90 Ω variants within the same series. Confirm the physical package dimensions align with the target PCB footprint, specifically noting the 4.30 mm maximum height constraint. Ensure the supplier provides documentation confirming RoHS compliance and lead-free status to meet environmental regulations. Cross-reference the load capacitance specification to guarantee circuit compatibility.

Crystals Selection Notes

Select this component when a fundamental frequency near 4 MHz is required with moderate stability specifications. The 200 Ω series resistance indicates suitability for oscillator circuits designed for higher impedance loads compared to standard low-resistance crystals. Consider the HC-49/US package size if space allows for through-hole style footprints adapted for surface mount. Evaluate the -20°C to +70°C temperature range against the operational environment requirements before finalizing the design choice.

Crystals Part Context

This model belongs to the CSM1 series of surface mount crystals produced by Cardinal Components Inc. The series offers various frequency and resistance options packaged in the widely recognized HC-49/US outline. This specific variant targets applications requiring a 4 MHz fundamental resonance with a 200 Ω internal resistance characteristic.

Crystals Replacement Considerations

Abracon ABLS-27.000MHZ-B2F-T is listed as a parameter-equivalent substitute for similar CSM1 models, though frequency differences must be verified.