The 5V-48V, 45W–140W wall-type USB-C compact charger excels in power, efficiency, and portability. It supports PD3.1, AVS, GAN3.5, and QC5, enabling fast, safe charging across a wide range of devices. Its compact footprint and robust heat dissipation make it ideal for home, office, and travel, delivering reliable performance where you need it most. Compatible with a variety of latest USB-C devices—from iPhone 17 series and tablets to laptops, robots, VR headsets, and more.

For businesses and brands, this built-in USB-C charger offers a versatile solution for multi-device charging needs. Its broad protocol support and compact design enable streamlined charging experiences in corporate environments, retail spaces, and hospitality settings. Ready for bulk orders, it can be integrated into customer tech ecosystems or used to highlight your commitment to high-quality, future-proof charging solutions.

LVSUN continue to push the boundaries of portable power, combining thoughtful engineering with practical usability. Whether you’re a consumer seeking dependable everyday charging or a business looking to upgrade device ecosystems, LVSUN delivers a 100W or 140W USB-C charger that’s both powerful and precisely engineered for real-world use.

The Hong Kong AsiaWorld-Expo once again hosts the HK global consumer electronics showcase in October 2025. The Global Sources Consumer Electronics Show runs from October 11 to 14, bringing together innovative manufacturers and cutting-edge products from around the world. As a focal point in the industry, the expo offers buyers and media a one-stop stage to explore the latest smart devices, home tech, wearables, and mobile peripherals. Shenzhen LVSUN Electronics Technology Co., Ltd. is a noteworthy exhibitor, unveiling its latest product lines in Hong Kong. The booth number is 6Q24, and the team looks forward to face-to-face discussions on the newest technology trends and application scenarios.

LVSUN has long been known for its cost-effective charging application solutions. At booth 6Q24, the company will present several key new USB-C charger products and upgraded versions of mature series. The exhibiting team will conduct live demonstrations of core features, interoperability, and real-world applications to help buyers quickly assess market fit and mass-production capabilities. During the show, visitors can experience LVSUN’s innovative design, high reliability, and globally coordinated supply chain in person.

If you plan to visit the Asia-World Expo, please note the event dates: October 11–14, at Hong Kong Asia-World Expo. It is advisable to pre-locate 6Q24 on the venue map and schedule meetings with the LVSUN team to maximize communication efficiency.

GESS DUBAI 2025 is about to kick off. We will be at LVSUN booth H22 from November 11–13, showcasing our latest products and solutions for the charger industry. This exhibition is not only an ideal stage for new product launches but also a valuable opportunity to gain deep insights into global charging technology trends and industry needs. No matter who you are, we look forward to connecting with you on-site to share our practical experiences in the rapidly expanding charging ecosystem, helping you enhance product performance, reduce total cost of ownership, and accelerate time to market. 

During the show, LVSUN will present key technologies and solutions for the charger industry, focusing on improving efficiency, voltage and current stabilization, thermal management, and safety. You will see:

1. Real-world applications of efficient charging modules and new power management solutions.

2. Customizable solutions for portable USB-C charging devices and fast-charging adapters.

3. A modular, scalable ecosystem with seamless integration with existing systems.

The on-site team in the exhibition area will also share standardized charging industry processes, testing methods, and best practices to help you advance more efficiently through development, certification, and mass production.

In healthcare, education, retail, warehousing, and office environments, the Safe-IT Multi-Device UV USB-C Charging Cabinet offers a hospital-grade solution for securely charging, organizing, and sanitizing up to 10 USB-C devices, including laptops and Chromebooks. With up to 1000W of power across 10 USB-C ports, it delivers fast, centralized charging to meet the needs of varied devices and users.

A core highlight is the built-in UV-C disinfection capability. The ultraviolet lights disinfect devices between uses without heat or chemicals, reducing cross-contamination risks. The sanitization occurs quickly, allowing devices to be ready for the next user without long downtime, making it especially suitable for hospital corridors, laboratories, classrooms, and office areas with high device usage.

From an application perspective, this UV-C charging cabinet covers a wide range of use cases. Whether in patient areas of hospitals, classrooms on campuses, training centers, front-desk zones in retail stores, or daily device management in warehouses and offices, the 10-port centralized charging design provides stable power and efficient organization. It helps teams quickly locate and access the devices they need, improving workflow and safety.

In short, Safe-IT’s multi-device UV-C charging cabinet not only completes the “charging-organizing-disinfection” trifecta but also adheres to hospital-grade safety standards, offering a reliable USB-C charging solution for education, healthcare, and business. Whether for everyday classroom devices or work environments with stringent hygiene requirements, this cabinet can be the central hub for centralized charging and disinfection management.

LVSUN’s 1000W USB-C charger stands out as a flexible, high-density charging solution with three kinds of port configurations—20-port, 16-port, and 10-port—each delivering up to 100W per port. With intelligent power distribution and automatic device detection, it maximizes total available power while ensuring safe, efficient charging for multiple devices simultaneously.

Designed for varied environments, this industrial USB charger excels in both professional workstations and dispersed charging setups. The 1000W USB-C charging station’s modular port layouts accommodate shifting needs—from a centralized office hub to classroom or library stations—demonstrating that more ports translate to greater charging flexibility across scenarios.

Key benefits include high per-port output, smart allocation, and robust protection mechanisms. The automatic device recognition minimizes configuration hassles, while advanced safety features safeguard devices during rapid charging, long sessions, and high-density deployments.

Targeting education, public spaces, healthcare, government, and training facilities, LVSUN’s 1000W multiple USB-C charger enables scalable, centralized charging management. Whether you’re optimizing a busy campus, a transit hub, or a government office, you can deploy a model that meets daily charging needs with reliability and ease.

Crystal oscillators are widely used in the Internet of Things (IoT) and play a key role. The following is a detailed introduction to some specific applications of crystal oscillators in the IoT:

1. Provide accurate clock signal

A crystal oscillator generates the clock frequency signal necessary for the CPU to execute instructions. All instructions are executed based on this signal. Furthermore, by providing a precise clock signal, a crystal oscillator facilitates synchronous data transmission, preventing data loss or misalignment. For example, a 32.768 kHz crystal oscillator is a common clock source in IoT devices. It provides a stable clock signal, ensuring proper operation.

PSX315 3.2*1.5*0.9mm  32.768KHz Crystal

2. Data collection and time synchronization

1） Data collection

In IoT devices, crystal oscillators provide an accurate clock reference, helping to achieve timed data acquisition and ensuring the accuracy and reliability of data sampling. This is crucial for IoT systems to obtain accurate data information.

2）Time synchronization

Crystal oscillators provide accurate clock signals that can be used to trigger events and synchronize time between devices. Multiple devices in an IoT system must work together, and crystal oscillators provide a unified time base to ensure consistent operation across all devices. This is crucial for achieving overall system synchronization and collaboration.

3.Low power design

IoT devices often need to operate for extended periods, making low-power design crucial. Certain crystal oscillators, such as 32.768kHz, can operate low-power devices for extended periods in power-saving mode, helping to extend the battery life of IoT devices. This is crucial for the practical application and widespread adoption of IoT devices.

DTLF206 2*6mm 32.768khz cylindrical crystal with low power consumption

4.Miniaturization and integration

As IoT devices become increasingly miniaturized and integrated, crystal oscillator products are also evolving towards smaller, lower-power designs. Miniaturized crystal oscillators better meet the size and weight requirements of IoT devices, enhancing their portability and flexibility. Furthermore, integrated crystal oscillators help simplify device circuit design and production processes, reducing costs and improving production efficiency.

5. Diverse application scenarios

IoT systems encompass a wide range of applications, including smart homes, smart cities, and industrial control. Different applications have varying requirements for crystal oscillators, such as frequency stability, power consumption, and size. Therefore, IoT systems must select crystal oscillator products tailored to their specific needs. For example, in the smart home sector, temperature-compensated crystal oscillators (TCXOs) are widely used due to their high precision and stability. However, in industrial control, crystal oscillators with enhanced shock and interference resistance may be required.

PTC1612  1.6 * 1.2 * 0.59 mm   TCXO quartz crystal oscillator

6. High precision and time-frequency technology

IoT applications sometimes require high-precision clock signals and time-frequency technologies. As a core component of the frequency source, the performance of the crystal oscillator directly impacts the system's clock accuracy and stability. Therefore, high-performance crystal oscillator products are essential for high-precision IoT applications. For example, GPS positioning and network transmission modules require high-precision crystal oscillators to ensure communication synchronization and positioning accuracy.

In summary, crystal oscillators play an irreplaceable role in the Internet of Things (IoT). With the continuous development of IoT technology, the application of crystal oscillators will become more extensive and in-depth. Furthermore, with the continuous advancement and innovation of crystal oscillator technology, more high-performance, low-power, and miniaturized crystal oscillator products will be applied to the IoT in the future, providing better support for the development of IoT technology.

Contact Us

Want to know more about A-Crystal’s Technology products?

Need selection the model or technical consultation?

Feel free to contact us via the following methods!

Tel: 0086-576-89808609  

Email: market@acrystals.com

Website: [www.acrystals.com](http://www.acrystals.com)  

In the realm of high-speed digital circuit design and system integration, the crystal oscillator acts as the system's "heartbeat." The quality of its output signal is paramount, directly determining the overall system's stability and performance. However, navigating the myriad of output types listed in datasheets—CMOS, LVDS, LVPECL, HCSL, and Clipped Sine—can be a common source of confusion for engineers. This article provides an in-depth comparison of these five primary oscillator output types, empowering you to make the perfect choice for your next project and ensure an optimized, highly reliable system design.

Understanding Output Logic: From General-Purpose to Specialized Solutions

Fundamentally, we can categorize these outputs into two main families: single-ended and differential CMOS/LVCMOS output oscillators and Clipped Sine wave oscillators fall under single-ended signals. They feature simple circuit structures and are the ideal choice for low-power clock oscillators and general-purpose microcontroller clock sources, dominating in cost-sensitive consumer electronics where frequencies are not extremely high. However, single-ended signals are susceptible to noise and show their limitations in high-speed, long-distance transmission. This is where differential signaling technology shines. LVDS differential oscillators, LVPECL clock oscillators, and HCSL output clocks all utilize a pair of opposite-phase signals for transmission, offering superior common-mode noise rejection, lower electromagnetic radiation (EMI), and excellent low jitter characteristics. They are the definitive solution for challenging EMI environments and enhanced signal integrity.

The Differential Face-Off: Application Territories of LVDS, LVPECL, and HCSL

Although all are differential outputs, LVDS, LVPECL, and HCSL each have their own distinct design and application strengths. LVDS crystal oscillators are known for their very low power consumption and moderate speed, making them the preferred choice for FPGA high-speed interface clocks, flat-panel display drivers, and clocks for high-speed data converters. They provide a stable, low-jitter reference clock while effectively controlling overall system power. LVPECL oscillators, on the other hand, represent the peak of performance, offering the fastest switching speeds and best jitter performance, but at the cost of higher power consumption and more complex termination networks. They are typically used in areas with extremely stringent timing requirements, such as network communication equipment clocks, optical modules, and base stations. Meanwhile, the HCSL output type is almost exclusively the standard configuration for PCIe clock generators. Its specific current-steering structure provides the PCI Express bus with a clock signal featuring sharp edges and ultra-low jitter, making it an indispensable clock component in hardware like motherboards, graphics cards, and solid-state drives (SSDs).

The Elegant Solution for Specialized Scenarios: Clipped Sine Wave

Among the plethora of square wave outputs, the Clipped Sine wave oscillator is a unique presence. It outputs a shaped sinusoidal wave whose harmonic content is significantly lower than that of a square wave, thereby substantially reducing electromagnetic interference. This low EMI crystal oscillator is primarily used in RF circuit clocks and as a local oscillator (LO) source for microwave systems, providing a "clean" clock signal to sensitive analog circuits and preventing digital noise from contaminating high-frequency analog signals.

Precise Selection Guide: Matching the Perfect "Heartbeat" to Your Project

Selecting the right crystal oscillator is a critical step for project success. If your design is for an industrial control mainboard or an IoT device core board with strict cost and power constraints, then a CMOS/LVCMOS output oscillator in a 3225 package crystal or a 2520 chip oscillator will be an economical choice. If you are designing a high-speed serial communication card or working on server clock distribution circuits, LVDS is the most versatile differential option due to its balanced performance. For designs that must comply with PCIe Gen 3/4/5 clock specifications, you must select an oscillator with an HCSL output. And for any application involving a high-frequency RF sampling clock, Clipped Sine output should be prioritized to ensure minimal system noise.

In conclusion, no single output type is a universal solution. Understanding the universality of CMOS, the balance of LVDS, the high performance of LVPECL, the specialization of HCSL, and the low noise of Clipped Sine is fundamental to making the best technical decision. As a professional crystal oscillator supplier, we offer a full range of high-stability active crystal oscillators and programmable oscillators to help you effortlessly meet a wide array of demanding design challenges.

Contact Us

Want to know more about A-Crystal’s Technology products?

Need selection the model or technical consultation?

Feel free to contact us via the following methods!

Tel: 0086-576-89808609  

Email: market@acrystals.com

Website: [www.acrystals.com](http://www.acrystals.com)  

Recent discussions surrounding the security of time service centers have brought a critical technology into focus: frequency and timing technology. At the Frequency and Time Benchmark Laboratory in Xi'an, every tick of "Beijing Time" is vital to the operation of critical infrastructure sectors  such as the BeiDou Navigation Satellite System, financial transactions, and power grid management. Supporting this system are tiny components no larger than a fingernail:crystal oscillators.

Crystal Oscillators: The Heartbeat of Precision Timing

While the cesium and hydrogen atomic clock ensembles at the National Time Service Center (NTSC) form the primary time reference, it is crystal oscillators that enable the reliable distribution of UTC (NTSC) signals across the country:

VCXOs (Voltage Controlled Crystal Oscillators) serve as relay stations for long distance time transfer. Using the satellite common view technique, they regenerate synchronized signals over thousands of kilometers with sub nanosecond precision.

OCXOs (Oven Controlled Crystal Oscillators) provide the stability required by critical infrastructure. In applications such as timing monitoring stations, properly calibrated OCXOs reduce timing discrepancies to nanosecond levels, meeting the stringent synchronization requirements of 5G networks and radar systems.

Exceptional Cost Efficiency: Compared to high cost atomic clocks, crystal oscillators deliver high timing accuracy at a fraction of the cost, making them the preferred solution for BeiDou terminals and financial servers.

                          VCXO3225

The Critical Role of Crystal Oscillators in National Infrastructure  

The stability of crystal oscillators directly impacts multiple vital systems:

Navigation Systems:Satellite ground clock offset measurements rely on oscillators for calibration. Accuracy degradation directly affects positioning precision.

Financial Systems:Modern trading platforms require microsecond level timestamp synchronization. Oscillator anomalies can cause  transaction disorders and market instability.

Power Grid Operations:Nationwide grid coordination depends on unified timing signals. Even minimal oscillator drift may trigger cascading grid failures.

The Unseen Timing Engine in Everyday Life 

Crystal oscillators operate silently in countless applications: every cellular handover, high speed rail system relying on  millisecond level synchronization, and even the precise striking of the New Year bell relies on their accurate "timekeeping."

In an era of technological advancement, these miniature components form the foundation of reliable timing systems. Every nanosecond of precision represents both engineering excellence and operational security

Contact Us

Want to know more about A-Crystal’s Technology products?

Need selection the model or technical consultation?

Feel free to contact us via the following methods!

Tel: 0086-576-89808609  

Email: market@acrystals.com

Website: [www.acrystals.com](http://www.acrystals.com)  

Equivalent Series Resistance (ESR)  is a critical parameter for evaluating the performance of a  crystal oscillator, directly reflecting the degree of energy loss during its resonant state. Whether for  kHz-range tuning fork crystal units or MHz-range AT-cut crystal units, the ESR value is influenced by a combination of factors. A deep understanding of the relationship between ESR, package size, and operating frequency is essential for optimizing circuit design and component selection.

ESR Characteristics of kHz Crystal Units  

In the kHz frequency range, crystal oscillators typically utilize a tuning fork crystal element. Due to their specific vibration mode, kHz crystals generally exhibit relatively high ESR values. Our product data shows a clear correlation between package size   and ESR for kHz crystal units:

      1.6×1.0mm package  : Maximum ESR of 90 kΩ  

      2.0×1.5mm package  : Maximum ESR of 70 kΩ  

      3.2×1.5mm package  : Maximum ESR of 70 kΩ  

      6.9×1.4mm package  : Maximum ESR of 65 kΩ  

      8.0×3.8mm package  : Maximum ESR of 50 kΩ  

     10.4×4.06mm package  : Maximum ESR of 50 kΩ  

These  ESR characteristics  give kHz crystal oscillators distinct advantages in low-power applications, making them particularly suitable for IoT devices and portable electronics requiring long battery life.

ESR Analysis of MHz Crystal Units  

MHz crystal oscillators  employ an AT-cut thickness-shear vibration mode, and their   ESR characteristics  follow more complex patterns. Based on our technical analysis, the ESR of an MHz crystal unit is influenced by both its package size and its operating frequency.

For a given package size,   ESR typically decreases as the frequency increases. This is primarily because higher-frequency crystals use thinner crystal blanks, resulting in lower vibrating mass and relatively reduced energy loss. However, the specific ESR value must be determined by considering both the specific frequency point and the   package size  .

Our product line covers various  package sizes from  1.6×1.2mm  to 7.0×5.0mm, with each package optimized for specific frequency ranges and ESR requirements.

In-Depth Technical Principle Analysis  

Mechanism of kHz Crystals  :

Tuning fork crystals  have a relatively large vibration amplitude. The package size   directly affects the vibration space of the tuning fork arms and the  air damping effect. A larger package provides a more sufficient vibration environment, reducing mechanical constraints, which helps lower the ESR.

Mechanism of MHz Crystals  :

The ESR characteristics of the AT-cut thickness-shear mode are more complex. Beyond the influence of package size, the operating frequency becomes a key factor determining the ESR value. Due to their thinner crystal blanks and optimized   electrode design, high-frequency crystals generally achieve lower ESR values. This inverse relationship between frequency and ESR is a key characteristic of MHz crystal oscillators  .

Professional Application Selection Guide  

Selection Strategy for kHz Crystals :

Ultra-Low-Power Devices  (e.g., smartwatches, IoT sensors): Prioritize 1.6×1.0mm   or 2.0×1.5mm packages  .

Industrial Control and Automotive Electronics: Recommend 3.2×1.5mm and larger   package sizes  .

High-Precision Timing Modules  : Choose larger package sizes like 8.0×3.8mm for better stability.

Selection Strategy for MHz Crystals  :

It is necessary to understand the  ESR characteristics  at the specific frequency point   in detail.

Comprehensively consider the relationship between package size and operating frequency.

Select the appropriate ESR range based on the power consumption and stability requirements of the application scenario.

Technology Development Trends  

As electronic products evolve toward multi-functionality and miniaturization, crystal oscillator technology continues to innovate. In the kHz domain, we are developing even smaller package technologies  to reduce size further while maintaining low-power characteristics. In the MHz domain, technological development focuses on supporting higher frequencies and better ESR performance within smaller dimensions.

System-in-Package (SiP) technology shows great potential in both frequency ranges. By integrating the oscillation circuit with the crystal resonator, the overall ESR characteristics can be optimized. We are committed to providing more precise   frequency control solutions  through continuous technological innovation.

Conclusion  

The ESR characteristics  of a crystal oscillator result from the combined effects of   package size, operating frequency  , and crystal blank design. For kHz crystals, ESR   is primarily influenced by package size, whereas for MHz crystals, the complex interaction between package size and operating frequency must be considered simultaneously.

A correct understanding of  ESR  helps engineers make more accurate component selection decisions during project development. We recommend carefully evaluating the requirements of the specific application and selecting the most suitable crystal oscillator product based on the operating frequency and package requirements.

Contact Us

Want to know more about A-Crystal’s Technology products?

Need selection the model or technical consultation?

Feel free to contact us via the following methods!

Tel: 0086-576-89808609  

Email: market@acrystals.com

Website: [www.acrystals.com](http://www.acrystals.com)

We provide comprehensive technical support to help customers choose the most suitable crystal solution  based on specific application scenarios and performance requirements, ensuring optimal system performance and reliability.

In electronic devices, the tuning fork crystal units serves as a core component for frequency control, and its package type directly influences circuit design and overall performance. The two mainstream packaging forms are through-hole (DIP) and surface-mount (SMD). DIP crystals, such as HC-49S, HC-49U, UM-1, and cylindrical types (e.g., 2×6 mm and 3×8 mm), use pinned leads for insertion into PCB holes. They are generally larger in size and offer high stability, making them suitable for applications like industrial control systems and communication base stations where space is not critical but reliability is essential.

                                                                                               DIP Tuning Fork Crystal Units

In comparison, SMD crystals—including packages such as SMD1612, SMD3225, SMD5032, and SMD-Glass3225—utilize surface-mount technology (SMT) to achieve ultra-miniaturized footprints, with dimensions as small as 1.6×1.2 mm. These components are ideal for high-density electronic products such as smartphones, wearables, and IoT modules.

                                                                                               SMD Tuning Fork Crystal Units

From an assembly perspective, DIP crystals require through-hole insertion and are typically soldered using wave soldering or manual techniques. While not suitable for full automation, they allow easier repair and replacement. On the other hand, SMD crystals are compatible with fully automated pick-and-place and reflow soldering processes, significantly improving production efficiency and reducing costs for high-volume manufacturing.

In terms of mechanical and environmental robustness, the SMD package offers better resistance to vibration and shock due to its firm attachment to the PCB. This makes it a preferred choice for automotive electronics and portable devices demanding high reliability. Although DIP packages are more susceptible to physical stress in dynamic environments due to their longer leads, they remain popular for prototyping and low-volume production due to ease of handling.

                                     SMD Crystal Reel

In summary, selecting between SMD and DIP tuning fork crystal units should be based on package size, production process, operating environment, and cost requirements. SMD crystals are better suited for miniaturized, automated consumer electronics, while DIP crystals are often chosen for high-reliability industrial and special-purpose applications. As a professional crystal oscillator manufacturer, we supply a comprehensive range of DIP and SMD tuning fork crystals and can help recommend the optimal frequency control solution for your needs.

Contact Us

Want to know more about A-Crystal’s Technology products?

Need selection the model or technical consultation?

Feel free to contact us via the following methods!

Tel: 0086-576-89808609  

Email: market@acrystals.com

Website: [www.acrystals.com](http://www.acrystals.com)