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MMD WC146SMF-32.768KHZ-T 32.77kHz Crystal Unit, 20ppm, Tape & Reel, SMD, 12.5pF, 7x1.5x1.4mm
Specifications
| Country of Origin | China |
|---|---|
| Brand | MMD |
| Operating Temperature | -40°C to 85°C |
| Height | 1.4mm |
| Length | 7mm |
| Model | WC146SMF-32.768KHZ-T |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel |
| Width | 1.5mm |
| Mount Type | Surface |
| Series | WC146SM |
| Maximum Operating Temperature | 85°C |
| Package Type | Tape & Reel |
| Minimum Operating Temperature | -40°C |
| Standards/Approvals | RoHS |
| Standard Frequency | 32.77kHz |
| Load Capacitance | 12.5pF |
| Series Resistance | 65kΩ |
Key Features
- Operates at a standard frequency of 32.77kHz for reliable timing reference.
- Low frequency tolerance of 20ppm ensures precision in oscillation frequency.
- Surface-mountable with ultra-low profile, only 1.4mm high.
- Compact package size with dimensions 7mm x 1.5mm x 1.4mm, suitable for space-limited circuits.
- Supplied on tape & reel, ideal for automated assembly environments.
- RoHS compliant for use in environmentally regulated electronics.
- Wide operating temperature range from -40°C to 85°C for industrial usage.
- Load capacitance rated at 12.5pF to match standard oscillator circuits.
Product Description
The MMD WC146SMF-32.768KHZ-T is a high-precision 32.77kHz surface mount crystal unit, engineered for applications requiring stable and reliable timing such as real-time clocks, microcontroller oscillators, and digital watches.
This crystal features a fundamental operating mode with an exceptionally low frequency tolerance of 20ppm, ensuring minimal deviation from its nominal 32.77kHz specification. Its ultra-low profile, with a height of just 1.4mm, and compact footprint of 7mm by 1.5mm make it ideal for densely populated PCBs where board space is at a premium.
The WC146SMF-32.768KHZ-T is designed for ease of integration with a standard 12.5pF load capacitance, and its series resistance of 65kΩ ensures reliable oscillator start-up and operation across a wide variety of circuits. The component is fully compliant with RoHS directives, suitable for use in environmentally conscious product designs.
32.77kHz crystal frequency, SMD-optimized for clock-timekeeping applications. 20ppm frequency tolerance supports high-accuracy system timing. Ultra-low 1.4mm max height for compatibility with shallow PCB assemblies. 7mm length and 1.5mm width proportions for minimized board footprint.
Tape & reel packaging enables rapid automated assembly processes in production environments. Wide -40°C to +85°C operating temperature, ideal for industrial and consumer electronics. 12.5pF load capacitance and 65kΩ series resistance for precise circuit matching.
Meets RoHS environmental standards.
Applications for the MMD WC146SMF-32.768KHZ-T include timing sources for data logging systems, RTCs in embedded devices, industrial controllers requiring precise clocking, portable battery-powered instruments, and wearables. Its compact design allows for cost-effective integration in high-density layouts, while the frequency stability and wide temperature range support versatility across sectors such as automotive, consumer electronics, industrial automation, and laboratory instrumentation.
Explore more surface mount crystal units, oscillators, and timing components in the ‘Electronics & Electricals > Electronics Components > Crystal Unit’ category on EnvMart.
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Frequently Asked Questions
The standard frequency of this crystal unit is 32.77kHz, designed for reliable timing reference applications.
It features a low frequency tolerance of 20ppm, ensuring precision in oscillation frequency.
The dimensions of this crystal unit are 7mm in length, 1.5mm in width, and 1.4mm in height, making it suitable for space-limited circuits.
The load capacitance is rated at 12.5pF, which matches standard oscillator circuits for optimal performance.
The series resistance is 65kΩ, which helps ensure reliable oscillator start-up and operation.
It operates within a wide temperature range of -40°C to 85°C, making it suitable for both industrial and consumer electronics applications.
This crystal unit is supplied on tape and reel, which is ideal for automated assembly environments.
It is designed for surface mounting, allowing for easy integration into circuit boards with limited space.
Yes, it is RoHS compliant, making it suitable for use in environmentally regulated electronics.
It is suitable for timing sources in applications such as real-time clocks, microcontroller oscillators, and digital watches.
This model is part of the WC146SM series, which is known for high precision in timing applications.
The crystal unit operates in a fundamental mode, which is essential for stable and reliable timing in various electronic applications.
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