18QHTF21-2.028-PD

Oscillators Overview

The 18QHTF21-2.028-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 2.028 MHz and utilizes LVCMOS output logic. The device is designed for low-power applications, featuring a supply voltage of 1.8V and a standby power-down mode. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes a standby power-down function to reduce current consumption
• Operates on a single 1.8V supply voltage

Oscillators Applications

• Battery-powered portable electronic devices
• Low-power consumer electronics
• Digital signal processing circuits requiring precise timing

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply rail stability meets the oscillator's operational specifications. Confirm that the 4-SMD no-lead package footprint aligns with your PCB layout constraints to ensure proper soldering and mechanical reliability during assembly.

Oscillators Selection Notes

Select this component when a low-profile, low-voltage oscillator is required for space-constrained designs. The 1.8V operation makes it suitable for modern battery-operated systems where power efficiency is critical. Consider the 2.028 MHz frequency specifically for applications requiring this exact clock rate rather than standard frequencies like 32.768 kHz or 25 MHz.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz-based frequency control products. The manufacturer has decades of experience in Taiwan's crystal industry. This series typically offers various frequency options within the same compact form factor, allowing designers to maintain consistent board layouts across different product variants.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF21 series parts with identical pinout and voltage but different frequencies, such as 18QHTF21-30.300-PD or 18QHTF21-6.1679-PD, provided the system clock requirement can be adjusted. Cross-brand replacements must match the 1.8V LVCMOS specification and 2.0x1.6mm SMD package.