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Happy New Year 2023

Dear valued customers and partners,

Happy New Year 2023 !! 
With 2022 coming to a close, we wanted to reach out and send our best wishes.
Thank you for your support. wish you and your family a happy, healthy, and prosperous New Year of Rabbit.

#China_supplier #Electronic_components #Diode #MOSFET #cost_down #High quality.

#China_supplier #Electronic_components #Diode #MOSFET #cost_down #High quality.

China's domestic chip companies MediaTek are the first one to release the world's most advanced #4nm

Apple's A16 processor is the first chip with a 4nm process, but MediaTek's Dimensity 9200 uses TSMC's more advanced second-generation 4nm process. Therefore, MediaTek can be said to be the first to adopt the world's most advanced 4nm chip manufacturer. It is also the strongest technology in the mobile phone chip industry.

According to the data released by MediaTek, benefiting from the excellence of the second-generation 4nm process, the performance of the Dimensity 9200 chip has increased by 12%, and the power consumption has dropped by 25%. The first place in the industry highlights the technical advantages of the Dimensity 9200 chip.

 #Topdiode #UF_capacitors #China_manufacturer #Electronic_components_supplier #Capacitors #diode #TVS_diode #MOSFET 

Parts especially designed for smart meters

Check out following parts which is especially designed for smart meters. 
for both single phase and 3 phase smart meter with lead time around 4-5 weeks 
 #Smart_Meters #electronics_components #China_manufacturer #Topdiode_Group #UF_Capacitors #cost_down #Fast_delivery.

Why are tantalum capacitors required to derate the voltage?

The suitable operating conditions of tantalum capacitors are -55-+125 degrees, and the rated voltage can be applied within 85 degrees for testing. It is said that such conditions have shown that the temperature characteristics of tantalum capacitors are very good, but one thing is often overlooked, that is, under this condition, the test is carried out with a protective resistance of 1000 ohms. At the moment when the product is energized, the voltage and current in the circuit have very small surge changes, and the excessive instantaneous current is suppressed by the series resistance. Therefore, the change has an impact on the tantalum capacitor.

In actual use, tantalum capacitors are often used in power circuits without any resistance protection for filtering or charging and discharging. If such circuits use an external power supply, at the moment of switching, the circuit will generate a very high voltage. Surge voltage and current changes, therefore, when used in such circuits, tantalum capacitors will be subjected to voltage and large current surges exceeding the rated value at the moment of switching and breakdown. Therefore, tantalum capacitors used in such circuits , After a lot of experiments, it has been proved that if you want to ensure its sufficient reliability, it must be greatly derated to ensure that the sum of the surge voltage and reverse voltage instantly applied to the product cannot exceed the rated value. Tantalum capacitors in impedance circuits are therefore required to be derated to 1/3 of the rated value to ensure reliability.

Such requirements have brought a lot of inconvenience to actual users; on the one hand, many users do not know such harsh conditions of use of tantalum capacitors in such circuits, so the use voltage is too high, which often causes breakdown, and on the other hand, On the one hand, users cannot achieve chip products with higher withstand voltage capabilities under the condition that the volume and capacitance are strictly limited.

The reason for such harsh conditions in the specific use of tantalum capacitors is actually a dangerous failure mode of tantalum capacitors; when the leakage current of tantalum capacitors is too large, the withstand voltage of the product will decrease rapidly, followed by breakdown. It can cause the rapid collapse of the dielectric layer and the phenomenon of burning or explosion in an instant. This defect causes the tantalum capacitor to be very fragile in circuits with large surge currents; the surge resistance is the highest among all capacitors.

Updated UF capacitors catalogue

Dear customers and partners,

We are upgrading our catalogue (UF capacitors).

Softy copy is available right now & hard copies will be available end of this Month.

We will start sharing you with updated catalogs soon.  Thank you for attention.

 #UFcapacitors #catalogue #Chip_MLCC #Tantalum_cap #SMDECAP #Film_Cap #Safety_cap #China_Supplier #Cost_down

What are Cathode and Anode?

What are Cathode and Anode?

Let us understand what cathode and anode exactly mean. They are both defined by the flow of current. Therefore, a cathode is an electrode from which the current exits a polarized electrical device.
Likewise, an anode is an electrode from which a current enters into a polarized electrical device.

The terms were finalized in 1834 by William Whewell who adapted the words from the Greek word (kathodos), ‘descent’ or ‘way down’. William had consulted with Michael Faraday for the coining of the terms.

Cathode

When we talk about cathode in chemistry, it is said to be the electrode where reduction occurs. This is common in an electrochemical cell. Here, the cathode is negative as the electrical energy that is supplied to the cell results in the decomposition of chemical compounds. However, it can also be positive as in the case of a galvanic cell where a chemical reaction leads to the generation of electrical energy.

In addition, a cathode is said to be either a hot cathode or a cold cathode. A cathode which is heated in the presence of a filament to emit electrons by thermionic emission is known as a hot cathode whereas cold cathodes are not heated by any filament. A cathode is usually flagged as “cold” if it emits more electrons compared to the ones generated by thermionic emission alone.

Anode

In the most basic form, an anode in electrochemistry is the point where an oxidation reaction occurs. Generally, at an anode, negative ions or anions due to its electrical potential tend to react and give off electrons. These electrons then move up and into the driving circuit.

If we take a galvanic cell, the anode is negative in nature and the electrons mostly move towards the external part of the circuit. In an electrolytic cell, it is again positive. Additionally, an anode can be a plate or wire having an excess positive charge.

Difference Between Anode And Cathode

Here are some key differences between cathode and anode.

Anode

Cathode

The   anode is the electrode where electricity moves into.

The   cathode is the electrode where electricity is given out or flows out.

The   anode is usually the positive side.

A   cathode is a negative side.

It   acts as an electron donor.

It   acts as an electron acceptor.

In   an electrolytic cell, oxidation reaction takes place at the anode.

In   an electrolytic cell, a reduction reaction takes place at the   cathode.

In   galvanic cells, an anode can become a cathode.

In   galvanic cells, a cathode can become an anode.


Why do YOU need to Second Source a component?

This was a question many people asked years ago before this market change. “Why do I need to second source if my supply chain is fine?”
Now, we are getting the question “Can you find me a second source?”

Shortage bothers everyone in electronic components field over year and it’s continue. Especially the shortages for IC, MCU, MOSFET etc. 
Lead time is being pushed out to 90+ weeks for some parts and prices are being raised sometimes more than several times.
Given above, it’s necessary for you to consider a few new Chinese supplier like Topdiode in order to secure and improve your supply chain.

How can Topdiode help?  

Topdiode Group (Topdiode & UF Capacitor) is a leading manufacturer of wide range components, covering capacitors, diode & transistors and MOSFET in China Since 1995.
As a Chinese factory, we are not only good at fast lead time but also quality control. Our market position is to replace first tier brands like Murata, TDK, AVX, Vishay, Littelfuse, Onsemi, Diodes etc with similar quality but much better price.  We keep stock for chip MLCC and some fast running tantalum capacitors, for balance, lead time is around 4 weeks.

Come to contact us for solutions to shortage and cost down, grow business together.

The difference between Safety capacitors Class X & Class Y

Since capacitors in EMI filters are connected to ac power lines, these capacitors can fail due to over-voltages and transients. They are classified according to their use in the circuit. Capacitors connected line-to-line are called “X capacitors,” also called “line to neutral” capacitors. Those connected from line-to-ground are called “Y capacitors,” also referred to as “line bypass capacitors.”

X capacitors are used for differential-mode EMI filtering. Y capacitors are used for common mode EMI filtering bypassing the interference from the wires to ground. Since safety capacitors are directly connected to the mains voltage, they can be subjected to voltage transients, power surges, overvoltage conditions, and other stresses resulting in device failure. They are designed for specific failure modes. Failure of X capacitors could result in a fire. X capacitors are designed to fail shorted, which causes a fuse or circuit breaker connected to the device to open, preventing the possibility of a fire.

The shorting of a Y capacitor could present a fatal shock hazard for personnel using the equipment. As a result, Y capacitors are designed to fail open and prevent any possibility of a shock hazard. While the equipment is shut down by failure of an X capacitor and the subsequent tripping of an overcurrent protection device when a Y capacitor fails, the equipment could continue operating, but EMI filtering would be significantly reduced.

Safety capacitor standards
Because a shorted Y capacitor could lead to the danger of an electric shock, Y capacitors are held to a higher operating standard compared with X capacitors. During the certification process, two key tests performed are the impulse and endurance tests. These are done to verify that the X/Y capacitor can withstand ten impulses of alternating polarity, followed by a 1000-hour endurance AC life test. After completing these two tests, the capacitors must still perform reliably in the circuit under AC voltage conditions. These tests are part of the IEC 384-14 certification requirements.

A design consideration when using X capacitors is the need to automatically discharge the capacitor upon loss of power to the power converter to comply with safety standards. Several suppliers offer integrated circuits that can be placed in series with bleed resistors (also called discharge resistors) that automatically discharge the energy in the X capacitor when the mains voltage is disconnected, diverting the energy away from the exposed AC plug and protecting equipment users.

#UF_capacitors is a professional ISO9001 factory in safety capacitors disc_capacitors #Y1 #Y2 #X2 for more than 27+ years, meeting international safety standards such #ENEC, #UL, #CQC, #KC/KTL an #VDE. #UL recognized lab test in factory & could issue UL test report directly. Compared to #Kemet, #Murata, #AVX #Vishay etc L/T more than 20~40+ weeks, we could manage #fast_ lead_time around 4 weeks at competitive.


Russia restricts rare gas exports, which may exacerbate global chip supply constraints

Russia has restricted exports of noble gas, including neon and helium, based on approved government decrees.

These gases are indispensable raw materials for the production of semiconductors.

Russia supplies up to 30% of the world's inert gases. The government document said that exports of noble gas can now only be carried out on the basis 

of the government's decision on the advice of the Ministry of Industry and Trade. This could adversely affect global chip supply.

Vasily Shpak, Deputy Minister of Industry and Trade of Russia, said on Thursday (June 2) that the policy of restricting the export of rare gases will continue 

until the end of 2022 to strengthen its position in the international market.

Helium and neon are both important components needed to make chips. Neon, in particular, plays a key role in the manufacturing of advanced semiconductors.

Ukraine, once one of the world's largest suppliers of the noble gas, produced about half of the world's neon gas before factories in Mariupol and Odesa 

were shut down by the fighting in March.

Spark told Reuters that Russia's move would provide an opportunity to "rearrange those chains that are now broken and build new ones".

The Russian government has said on May 30 that until December 31, the export of noble gases that Russia used to offer to Japan and other countries will 

only be carried out with special permission from the state.

Russia currently accounts for 30 percent of the global supply of rare gases, according to estimates by the Russian Trade Ministry.

 India's "Economic Times" (The Economic Times) said that according to a resolution of the Russian cabinet of ministers, now only the Russian government 

can decide whether these rare gases can be delivered to the outside world.

Sources told the outlet that it would be more difficult for some countries to produce electronics without Russia's neon, argon and helium.

Russia's export restrictions could exacerbate supply constraints in the global chip market. The move could allow Russia to export these gases in exchange for semiconductor imports.

Taiwan, the world's main chip-producing region, imposed restrictions on chip exports to Russia after the war between Russia & Ukraine on February 24.

The Russian Ministry of Industry and Trade has confirmed that the agreements already reached will be taken into account when making decisions on the 

export supply of these gases.

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