18QHTF21-35.021-PD

Oscillators Overview

The 18QHTF21-35.021-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 35.021 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and supports a standby power-down function. Frequency stability is rated at ±50ppm. It functions within an operating temperature range of -40°C to +85°C. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Oscillators Feature Summary

• Supports standby power-down mode for energy management
• Delivers LVCMOS output signal compatibility
• Compact surface-mount design suitable for space-constrained layouts

Oscillators Applications

• General purpose clock generation in embedded systems
• Timing reference for digital communication interfaces
• Clock source for microcontrollers requiring low voltage operation

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Ensure the 1.8V supply rail is stable and within specification limits to maintain the stated ±50ppm frequency stability. Confirm that the PCB footprint matches the 4-SMD No Lead package dimensions of 2.0 x 1.6 mm to ensure proper mechanical fit and solder joint integrity during assembly processes.

Oscillators Selection Notes

Select this component when a precise 35.021 MHz timing source is required for low-voltage digital circuits. The choice is driven by the need for LVCMOS interface compatibility and the ability to enter a low-power standby state. Consider the industrial temperature range if the application environment varies significantly. The small form factor makes it suitable for dense board layouts where larger packages are not feasible.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequencies with consistent electrical characteristics. The 'PD' suffix indicates the inclusion of a power-down control feature. These components are designed for applications requiring reliable clock signals in consumer electronics and industrial equipment.

Oscillators Replacement Considerations

Direct replacements must match the 35.021 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and thermal specifications. Cross-reference with other manufacturers offering similar low-profile oscillators with identical electrical parameters.