Dear Customers,
The International Workers' Day, also known as Labor Day or May Day. The ultimate goal of International Workers' Day is to promote equity, justice and dignity for all working people across the world.
WEE Technology would like to thanks for all the WEET worker devotion and dedicated work spirit. We wish everyone will enjoy a happy and relaxed May day.
Please send your inquiry as usual, WEET sales team will reply you at the first time when we resume work, thank you.
2025 International Labor Day Holiday Notice
Holiday From 1st May to 5th May
Resume Work On 6th May 2025
WEE Technology Company Limited
HER305 is a commonly used fast recovery rectifier diode with a wide range of application scenarios and features.
The following will provide a detailed introduction to its application scenarios and parameter characteristics.
https://www.weetcap.com/Diodes-Rectifiers/WEET_DO27_HER301_THRU_HER308.html
Typical Application of WEET HER305 :
1. Power supply: HER305 is used as a rectifier in power supplies, which can convert AC power into stable DC power and is commonly found in various electronic devices.
2. Electric tools: As the power management component of electric tools, HER305 provides efficient energy conversion function to ensure the normal operation of electric tools.
3. Electric vehicle charger: HER305 plays a role in rectification and reverse protection in the electric vehicle charging system, ensuring charging efficiency and safety.
4. LED driver: HER305 is used for power management of LED lighting systems, ensuring stable current output and ensuring the normal operation of LED lights.
5. Solar photovoltaic inverter: As a rectifier diode in the solar photovoltaic system, HER305 can convert the alternating current generated by the solar panel into direct current and supply it to the inverter.
Main Parameter characteristics of WEET HER305:
1. High voltage resistance: It has a high reverse voltage resistance, ensuring stable operation in complex circuit environments.
2. Fast recovery time: With fast recovery time, it improves rectification efficiency.
3. Low reverse leakage current: Low reverse leakage current reduces energy loss and improves energy efficiency.
4. High temperature working ability: Good high-temperature working ability, suitable for various working environments.
5. High reliability: The manufacturing process is excellent, with high reliability and stability, long-term stable operation, and reduced maintenance costs.
In summary, HER305, as a fast recovery rectifier diode with stable performance and wide applications, plays an important role in the electronic field, providing strong support for the stable operation of various electronic devices.
DB107S products are widely used in various household appliances such as switching power supplies,
LED lighting, integrated circuits, mobile communications, computers, industrial automation control equipment,
automotive electronics, LCD TVs, IoT, smart homes, medical instruments, induction cookers, etc.
https://www.weetcap.com/Diodes-Rectifiers/WEET_DBS_DB101S_THRU_DB107S.html
The difference in usage between MB6S and DB107S: MB6S is a rectifier bridge that operates in the mid to low frequency range,
while DB107S is a high-frequency rectifier bridge that operates in the tens of kilohertz range.
Therefore, in order to replace the fast diode SS14, DB107S must be chosen instead of MB6S.
A rectifier bridge is a device that encapsulates the rectifier tubes within a casing. Divided into full bridge and half bridge.
A full bridge is a circuit that seals four diodes of a connected bridge rectifier circuit together.
Half bridge rectifier is a circuit that combines half of two diode bridge rectifiers together.
Two half bridges can form a bridge rectifier circuit, and one half bridge can also form a full wave rectifier circuit with a transformer and a center tap.
When selecting a rectifier bridge, consideration should be given to the rectifier circuit and operating voltage.
The main difference between aluminum polymer capacitors and traditional aluminum electrolytic capacitors
lies in their construction and the electrolyte materials used, which lead to significant differences in their performance:
Electrolyte material:
Traditional aluminum electrolytic capacitors typically use liquid electrolytes (such as borate solutions) or in some cases semi-solid paste electrolytes.
Aluminum polymer capacitors use conductive polymers as cathode materials, which are solid electrolytes commonly found in materials such as polypyrrole and polythiophene.
Equivalent series resistance (ESR):
Aluminum polymer capacitors typically have very low ESR due to the high conductivity of solid electrolytes, which makes them more outstanding in high-frequency applications,
effectively filtering out ripple currents and reducing noise.
Traditional aluminum electrolytic capacitors have lower high-frequency performance compared to polymer capacitors due to the higher resistance and ESR of liquid electrolytes.
Temperature stability:
The capacitance of polymer capacitors changes little with temperature and has good temperature stability.
Capacitors with liquid electrolytes are greatly affected by temperature, and their capacitance and ESR will vary significantly with temperature.
Lifespan and reliability:
Aluminum polymer capacitors have no liquid leakage or drying problems, reducing the risk of bloating and bursting, longer lifespan, and higher reliability.
The electrolyte of traditional aluminum electrolytic capacitors may evaporate or dry over time, leading to a decrease in capacitance value and eventual failure.
Physical form:
Polymer capacitors can achieve smaller size and lighter weight, making them suitable for high-density packaging and miniaturization design.
Traditional aluminum electrolytic capacitors may require more space to accommodate and prevent leakage due to the liquid electrolyte.
Applicable fields:
Aluminum polymer capacitors are more suitable for high demand applications such as high-end motherboards, power converters, automotive electronics,
high-frequency communication equipment, etc. due to their superior performance.
Traditional aluminum electrolytic capacitors still hold a place in cost sensitive fields with less stringent requirements for volume and performance.
Aluminum polymer capacitors are superior to traditional aluminum electrolytic capacitors in terms of high-frequency performance, temperature stability,
lifespan, and reliability, but correspondingly, the cost may also be higher. The choice of which type of capacitor to use depends on the specific application requirements and budget.
Aluminum polymer capacitors play an important role in multiple fields and applications due to their unique performance advantages.
The following are some of the main application areas:
Consumer electronics: In smartphones, tablets, laptops, and other portable devices, aluminum polymer capacitors are used for power management,
decoupling of CPUs and GPUs, and high-frequency filtering to help improve device energy efficiency and stability.
Computer hardware: In motherboards, graphics cards, memory modules, and solid-state drives,
they are used to provide fast response power supply, ensuring high-performance computing and signal purity.
Power Conversion and Adapter: In switching power supplies, AC-DC converters, and DC-DC converters,
aluminum polymer capacitors provide low ESR characteristics that help improve energy efficiency, reduce heat generation, and maintain stable output under high-frequency conditions.
Automotive electronics: In the engine control units, advanced driver assistance systems (ADAS),
and infotainment systems of automobiles, their high reliability, wide temperature range, and seismic performance are particularly suitable.
Telecommunications and network equipment: In communication infrastructure such as base stations, routers, and switches,
aluminum polymer capacitors are used for filtering, energy storage, and maintaining signal quality, supporting high-speed data transmission and long-term stable operation.
Renewable energy: In solar inverters and wind power control systems, they help smooth output voltage,
improve energy efficiency, and maintain stable operation in harsh environments.
Medical equipment: In precision medical instruments and monitoring systems, the stability and long lifespan of
aluminum polymer capacitors ensure the reliability of the equipment and patient safety.
Aerospace: In aviation electronic equipment and satellite communication systems,
their high performance and reliability meet the requirements for use in extreme environments.
Preheating the circuit board to reduce thermal shock is a necessary step during welding,
and it is recommended to preheat it to about 100-120 ° C.
The welding temperature should be controlled below 260 ° C and the welding time should be shortened
as much as possible to avoid capacitor failure caused by overheating.
Use appropriate solder and flux, and ensure that the solder joints are uniform to avoid local overheating.
The life span of aluminum polymer capacitors is usually represented by a warranty period of thousands to tens of thousands of hours,
but the actual service life is affected by various factors, including operating temperature, voltage fluctuations, and mechanical stress.
High temperature is the main factor that shortens the lifespan of capacitors, and for every 10 ° C increase,
the lifespan is approximately halved. Voltage fluctuations should be controlled within the rated voltage range,
as over voltage can accelerate aging. In addition, mechanical vibration and impact also need to be considered,
and reasonable design and installation can effectively avoid these problems.
The main advantages of aluminum polymer capacitors include:
Lower equivalent series resistance (ESR) allows them to perform better in high-frequency circuits, effectively filtering out ripple current and noise.
Higher temperature stability, wider operating temperature range, suitable for use in harsh environments.
Don't worry about electrolyte drying up, it has a longer service life and higher reliability.
Not easy to leak and low risk of explosion, as there is no liquid electrolyte, there is a significant improvement in safety.
Small in size and lightweight, suitable for portable electronic devices and high-density assembly applications
Working principle of aluminum polymer capacitors
The core of aluminum polymer capacitors lies in their solid polymer electrolyte, which replaces the liquid electrolyte in traditional aluminum electrolytic capacitors.
This polymer material not only improves the stability and high temperature resistance of capacitors, but also significantly reduces ESR.
When working, the positive electrode is made of aluminum foil, and a layer of aluminum oxide film is formed on the surface as a dielectric;
The negative electrode is made of aluminum foil coated with conductive polymer.
Ionic conduction is achieved between the two poles through solid polymer electrolytes, enabling the storage and release of charges.
This mechanism endows aluminum polymer capacitors with excellent electrical performance.
Aluminum polymer capacitor is an electrolytic capacitor that has gradually become a favored choice for engineers in the field of electronic components
due to its excellent performance, especially in applications with strict requirements for capacitance characteristics.
Its characteristic is to use aluminum foil as the anode and form a layer of aluminum oxide (Al2O3) on the surface of the anode as the dielectric.
Unlike traditional liquid aluminum electrolytic capacitors, the cathode of aluminum polymer capacitors does not use liquid electrolyte,
but instead uses a conductive polymer material. This high conductivity polymer electrode film is deposited on an alumina layer,
replacing traditional liquid or paste electrolytes, and is therefore also known as solid-state aluminum electrolytic capacitors.
Aluminum polymer capacitors use solid polymer electrolytes, which have high conductivity, low ESR, wide temperature operating range, and long lifespan.
Suitable for scenarios with high frequency, harsh environments, and high reliability requirements,
such as consumer electronics, automotive electronics, and telecommunications equipment.
Compared with traditional aluminum electrolytic capacitors, it has better performance but may be more expensive.
| WEET PN | MHz | Size [mm] | Frequency Range |
| WQC-HC49S | MHz Quartz Crystal | 10.8 × 4.5× 3.38mm | 3.2 ~ 48 MHz |
| WQC-HC49SMD | MHz Quartz Crystal | 12.5 × 4.5× 4.1mm | 3.2 ~ 48 MHz |
| WQC-SMD3225 | MHz Quartz Crystal | 3.2×2.5×0.70 mm | 8 ~ 54 MHz |
| WQC-SMD5032 | MHz Quartz Crystal | 5.0×3.2×0.8 mm | 8 ~ 50 MHz |
| WQS-OSC3225 | MHz Oscillators | 3.2×2.5×0.95 mm | 1 ~ 160 MHz |
| WQS-OSC5032 | MHz Oscillators | 5.0×3.2×1.2 mm | 1 ~ 160 MHz |
| WQS-OSC7050 | MHz Oscillators | 7.0×5.0×1.3 mm | 1 ~ 160 MHz |
| WQS-3Z3225 | DXO Oscillators | 3.2×2.5×0.9 mm | 90 ~ 160 MHz |
| WQS-5Z5032 | DXO Oscillators | 5.0×3.2×1.25 mm | 90 ~ 160 MHz |
| WQS-7Z7050 | DXO Oscillators | 7.0×5.0×1.45 mm | 90 ~ 160 MHz |
https://www.weetcap.com/Crystals-Oscillators/
In order to let more customers know about WEET Capacitors and Resistors,
we have pulished some photos on Instagram Sharing Test Reviews.
WEET audio capacitors can replace ERSE, Mundorf - MCAP MKP,
Mallory, BENNIC, SCR / SOLEN, Auricap, INTERTECHNIK, Ampohm audio series.
WMH can replace from those brands audio capacitors: like Mundorf, Auricap.
A luxury capacitor designed especially for modern high-end tweeters and mid-range drivers
It is the most high grade audio capacitors in China, with Aluminum Foil and PP film,
we are the only factory can produce such type audio capacitor.
https://www.instagram.com/weetcap/
Dear Customers,
We are glad to inform you the 2024 marks the 75th anniversary of China National Day, which is also the 75th anniversary of the founding of the People's Republic of China.
Our factory is running into the peak season from Sept to Dec,2024.
We sincerely suggest you plan your order in advance, we will try our best to provide the fastest lead time to meet your schedule. Thank you.
2024 National Day Holiday Notice
Holiday From 1st Oct, to 7th Oct, Resume Work On 8th Oct, 2024
Best regards,
WEE Technology Company Limited
2024-09-20
