C16-40.000-8-1520-R

Crystals Overview

The C16-40.000-8-1520-R is a parallel fundamental quartz crystal manufactured by Aker Technology Corp, designed for surface-mount applications. It operates at a nominal frequency of 40 MHz with an 8 pF load capacitance. The component features a 4-pin SMD package measuring 7.0 x 5.0 x 1.1 mm. Key electrical specifications include a frequency tolerance of ±20 ppm at 25°C, a maximum equivalent series resistance (ESR) of 70 Ω, and a drive level of 100 µW. It supports an operating temperature range from -40°C to +85°C and exhibits an aging rate of ±3 ppm per year.

Crystals Feature Summary

• Surface-mount design with four pins for automated assembly integration
• Parallel fundamental resonance mode for stable oscillator circuits
• Compliant with RoHS environmental standards

Crystals Applications

• General-purpose clock generation in embedded systems
• Timing references for microcontrollers and digital logic
• Communication modules requiring 40 MHz stability

Crystals Procurement Notes

Verify the specific suffix 'R' against the manufacturer's current datasheet to confirm tape-and-reel packaging configuration. Ensure the load capacitance requirement of the target circuit matches the specified 8 pF value. Confirm that the operating temperature range of -40°C to +85°C meets the environmental constraints of the final application before procurement.

Crystals Selection Notes

Select this component when a 40 MHz reference with tight ±20 ppm initial tolerance is required. The 8 pF load capacitance suits circuits with low parasitic capacitance. Consider the 70 Ω ESR limit for oscillator driver strength compatibility. The extended temperature range makes it suitable for industrial environments where standard commercial grade parts may fail.

Crystals Part Context

This part belongs to the C16 series of surface-mount crystals from Aker Technology. The series offers various frequencies and load capacitances. The C16 form factor provides a compact footprint compared to larger through-hole alternatives, facilitating high-density PCB layouts for modern electronic devices requiring precise timing.

Crystals Replacement Considerations

Direct substitutes must match the 40 MHz frequency, 8 pF load capacitance, 4-pin SMD package, and ±20 ppm tolerance. Verify equivalent ESR and aging characteristics. Cross-reference with other manufacturers offering identical pin-out and mechanical dimensions to ensure board-level compatibility.