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Product Detailed Parameters
- Description：118.125 MHz XO 1.8V 2.0X1.6MM PD
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：118.125 MHz
- Function：Standby (Power Down)
- Output：LVCMOS
- Voltage - Supply：1.8V
- Frequency Stability：±50ppm
- Absolute Pull Range (APR)：-
- Operating Temperature：-40°C ~ 85°C
- Spread Spectrum Bandwidth：-
- Current - Supply (Max)：28mA
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：4-SMD, No Lead
- Size / Dimension：0.079" L x 0.063" W (2.00mm x 1.60mm)
- Height - Seated (Max)：0.031" (0.80mm)
- Supplier Device Package：-
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Overview
The 18QHTF21-118.125-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 118.125 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a standby (power down) function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.
Feature Summary
- Supports standby mode for reduced power consumption
- Utilizes LVCMOS output interface
- Compact surface-mount package design
Applications
- Low-power electronic designs
- Digital signal processing systems
- Communication equipment requiring precise clocking
Procurement Notes
Verify the specific operating temperature range and load capacitance requirements against your system design before procurement. Ensure that the 1.8V supply voltage aligns with your power rail specifications. Confirm that the 4-SMD no-lead package footprint matches your PCB layout constraints to ensure proper soldering and mechanical stability during assembly.
Selection Notes
Select this component when a low-profile, low-voltage oscillator is required for high-frequency applications. The integrated standby feature makes it suitable for battery-operated devices or systems requiring active power management. Compare its physical dimensions and electrical characteristics against alternative oscillators to ensure compatibility with existing board space and power budget limitations.
Part Context
This model belongs to the QHTF series of crystal oscillators from Mercury Electronics. The series is known for providing stable frequency generation in small form factors. The 'PD' suffix typically indicates the presence of a power-down control pin, allowing for dynamic power management in portable and energy-efficient electronic applications.
Replacement Considerations
Direct substitutes may include other 118.125 MHz LVCMOS oscillators in a 2.0x1.6mm SMD package from different manufacturers. Verify equivalent electrical parameters such as supply voltage, current consumption, and output swing. Ensure thermal performance and frequency stability specifications meet or exceed the original component's requirements.
