18QHTF21-100.600-PD

Overview

The 18QHTF21-100.600-PD is a fixed-frequency crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a nominal frequency of 100.6 MHz with an LVCMOS output logic level. The device is designed for a supply voltage of 1.8V and includes a standby or power-down function to reduce consumption when not in use. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 mm by 1.6 mm. This component is suitable for applications requiring precise timing signals in space-constrained electronic designs.

Feature Summary

• Supports LVCMOS output logic for standard digital interfacing
• Includes standby mode capability for power management
• Utilizes a leadless surface-mount package for compact integration

Applications

• General-purpose clock signal generation
• Digital circuit timing references
• Embedded system clock sources

Procurement Notes

Verify the specific ordering suffix to ensure the correct package variant and frequency tolerance match the design requirements. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Check for RoHS compliance status if environmental regulations apply to the manufacturing process. Ensure the leadless SMD footprint matches the PCB layout specifications to avoid assembly issues.

Selection Notes

Select this model when a low-voltage 1.8V operation is required alongside a standard LVCMOS interface. The small 2.0x1.6 mm footprint makes it ideal for dense PCB layouts where space is limited. Consider the standby feature if power efficiency during idle periods is a critical design constraint. Verify that the 100.6 MHz frequency meets the exact timing needs of the application without requiring external dividers.

Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options within a consistent small form factor. The PD suffix typically denotes a specific packaging or tape-and-reel configuration compared to other variants like OE. These components are widely used in consumer electronics and industrial equipment requiring reliable clock sources.

Replacement Considerations

Direct substitutes include other 18QHTF21 series parts with identical 100.6 MHz frequency and 1.8V supply, such as 18QHTF21-100.600-OE, provided the package type matches. Cross-reference pinouts and electrical characteristics carefully before swapping manufacturers.