Suntan Silver Mica Capacitor Lead Time is Shorter

December 3, 2013 Views
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Suntan Technology Company Limited
---All Kinds of Capacitors

We general offer 5-6 weeks lead time for our silver mica capacitors now.

With features high precision, high stability, high reliability and available in small values, silver mica capacitors are mostly used at high frequencies and in cases where low losses (high Q) and low capacitor change over the time is desired.
Capacitance Range: 1pF – 22,000pF
Tolerance: ±0.5pF, ±1%, ±2%, ±5%
Rated Voltage DC 50V, 100V, 300V, 500V, 1000V
Operating Temperature -55°C ~ +125°C
Withstanding Voltage: Rated voltage x 2 (V DC) within 1-5 seconds

More details or asking price of this capacitor, please check with our sales team sales@suntan.com.hk .

More..SM Mica CapacitorSu  Suntan  SM sliver mica capacitors  TS23  Lead time  

Suntan SM Silver Mica Capacitor

July 18, 2012 Views
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Suntan Technology Company Limited
----All Kinds of Capacitors

An overview or tutorial about the basics of the silver mica capacitor, its construction, properties and the uses of silver mica capacitors particularly in RF circuits.

Silver mica capacitors have been widely used as high performance capacitors over the years. Although silver mica capacitors are not as widely used, these days, nevertheless they are still available and used in a variety of applications where their particular properties are needed.
 
Silver mica capacitors are able to provide very high levels of accuracy, stability and low loss. As a result silver mica capacitors found many uses in radio frequency applications, particular for oscillator and filter circuits where their stability, accuracy and low loss (leading to high Q) were needed. Although not as widely used these days, they can still be obtained and are used where stability of value is of the utmost importance and where low loss is required. 
 
Two main reason for the decline in the use of silver mica capacitors is their size, resulting from the materials used and their construction. The cost of silver mica capacitors is higher than many other types that can often be used these days.
 
Silver mica capacitor properties

The reason for the continued use of silver mica capacitors is the fact that they can offer very high levels of performance, better in many areas than any other type of capacitor. However in many applications, other more modern technologies provide levels of performance that meets the needs for that particular requirement.
 
The particular properties of the silver mica capacitor are summarised below:
 
•High accuracy: Silver mica capacitors can be obtained with tolerance figures of +/- 1%. This is much better than virtually every other form of capacitor available today. 
•Temperature co-efficient: The temperature co-efficient of silver mica capacitors is much better than most other types of capacitor. The temperature coefficient is positive and is normally in the region 35 to 75 ppm / C, with +50 ppm / C being an average value 
•Value range: Values for silver mica capacitors are normally in the range between a few picofarads up to two or possibly three thousand picofarads. 
•Low capacitance variation with voltage :   Silver mica capacitors exhibit very little voltage dependence. 
•High Q:  Silver mica capacitors have very high levels of Q and conversely small power factors. These are both almost independent of frequency.

Although silver mica capacitors have a high tolerance and low temperature co-efficient they are known to jump in value on occasions.
 
Suntan SM mica capacitors are ideal for high requence and RF applications.SM is our tradmark about sliver mica capacitors,if you have any inquire about Silver Mica capacitors,Pls contact our by website 
http://www.suntan.com.hk, we can offer you all kinds of capacitors.

More..SM Mica CapacitorSu  Suntan  Silver Mica Capacitors  TS23  properties  High accuracy  

Suntan Silver Mica (SM) Capacitors

July 9, 2012 Views
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Suntan Technology Company Limited
----All Kinds of Capacitors

Suntan Silver Mica Capacitors with high reliability (SM tradmark)

Suntan Silver Mica Capacitors are available with values that range from 1–22,000 pF, voltages are in the range 50–1000V for standard dipped mica capacitors. Mica capacitors exhibit very little voltage dependence, have high Q or conversely small power factors that are quite independent of frequency. With all these advantage, our mica capacitors are ideal for high requence and RF applications.

Mica Capacitors Specifications

Brand SM
 
    capacitance range : 1pf – 22,000pf
                 tolerance : ±0.5pf, ±1%, ±2%, ±5% ~ 20%
            rated voltage : dc 50v, 100v, 300v, 500v
operating temperature: -55°c ~ 125°c
  withstanding voltage : rated voltage x 2 (vdc) within 1-5 seconds

Silver Mica Capacitors Knowledge

Silver mica capacitors are high precision high stability high reliability capacitors. They are available in small values, and are mostly used at high frequencies.

Mica capacitors, which are now obsolete, were in use in the early 20th century. They consisted of sheets of mica and copper foil sandwiched together and clamped.

Silver mica capacitors, also known as silvered mica capacitors, obsoleted mica capacitors. Instead of being clamped with foils these use sheets of mica coated on both sides with deposited metal. The assembly is dipped in epoxy. The advantages are:

  • greater stability, since there are no capacitive airgaps that can change dimension,
  • airtight enclosure removes the risk of oxidation or corrosion of plates or connections.
  • greater value per volume, since
  • there are no airgaps between plates and mica,
  • the conducting surfaces can be thinner.
  • no clamping mechanism is needed

Suntan Silver Mica Capacitors with high reliability

December 19, 2011 Views
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Suntan Silver mica (SM) capacitors are high precision, stability and reliability capacitors. They are available in small values, and are mostly used at high frequencies.

Generally known as silver mica capacitors, these rendered clamped mica capacitors obsolete. Instead of being clamped with foils these are assembled from sheets of mica coated on both sides with deposited metal. The assembly is dipped in epoxy. The advantages are:

1.greater stability, since there are no capacitive airgaps that can change dimension

2.airtight enclosure removes the risk of oxidation or corrosion of plates or connections

3.greater capacitance per volume, since

4.there are no airgaps between plates and mica,

5.the conducting surfaces can be thinner.

6.no clamping mechanism is needed

Suntan is a manufacturer of Mica Capacitors. Please refer to below product image of Mica Capacitors.For more details,please feel free to contact us.

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Suntan mica for mica capacitor

August 29, 2011 Views
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Natural mica has to be carefully selected because some samples do contain impurities including, iron, sodium, ferric oxide, and lithium. This introduces some variability into any mica that might be used for capacitor manufacture and therefore it must be carefully inspected and classified. This is one of the reasons why silver mica capacitors are more expensive than other types which have less manual intervention.

Mica is chemically very stable and chemically inert. Mica does not react with oil, water, many acids alkalis, and solvents. As a result of this, ageing does not occur to any major degree, and the variations of water vapour in the atmosphere do not cause undue variations in the overall capacitor performance.

Although more costly than other dielectrics, mica is an ideal form of dielectric for very high performance capacitors such as silver mica capacitors.

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Suntan Mica Capacitors

July 25, 2011 Views
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The mica group of sheet silicate (phyllosilicate) minerals includes several closely related materials having highly perfect basal cleavage. All are monoclinic with a tendency towards pseudo-hexagonal crystals and are similar in chemical composition. The highly perfect cleavage, which is the most prominent characteristic of mica, is explained by the hexagonal sheet-like arrangement of its atoms.

The word "mica" is thought to be derived from the Latin word micare, meaning "to glitter", in reference to the brilliant appearance of this mineral (especially when in small scales).

Based on Mica’s characteristic and other function .Suntan is supplying Silver mica capacitors which are high precision high stability high reliability capacitors. They are available in small values, and are mostly used at high frequencies.

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Suntan For Mica Capacitor and Mica

July 15, 2011 Views
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Mica capacitors are high precision high stability high reliability capacitors. They are available in small values, and are mostly used at high frequencies.

Mica has a high dielectric strength and excellent chemical stability, making it a favoured material for manufacturing capacitors for radio frequency applications. It has also been used as an insulator in high voltage electrical equipment, and between the bars of commutators in direct current motors and generators. Mica is used because it can be split into very thin slices, and this keeps its thermal resistance low while retaining sufficient dielectric strength to prevent current from flowing across it at moderate voltages. The insulation is usually necessary when the heat sink is earthed (grounded) while the electronic component's metal surfaces will be connected to a power supply or signal line. If they were in direct contact this could form a short circuit. Heat sink insulation can also be necessary to prevent the heat sink from acting like an antenna if the component is connected to a rapidly varying signal.

Our Suntan has manage TS23, so if you are interested in this electrical capacitors, you can visit our website www.suntan.com.hk  for the detailed information, and you can send your enquiry to us for our competitive price and superior quality .I am sure if you have the first step ,we will have a good business relationship in the future. So Come on!

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Suntan mica for mica capacitor

March 28, 2011 Views
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Natural mica has to be carefully selected because some samples do contain impurities including, iron, sodium, ferric oxide, and lithium. This introduces some variability into any mica that might be used for capacitor manufacture and therefore it must be carefully inspected and classified. This is one of the reasons why silver mica capacitors are more expensive than other types which have less manual intervention.

Mica is chemically very stable and chemically inert. Mica does not react with oil, water, many acids alkalis, and solvents. As a result of this, ageing does not occur to any major degree, and the variations of water vapour in the atmosphere do not cause undue variations in the overall capacitor performance.

Although more costly than other dielectrics, mica is an ideal form of dielectric for very high performance capacitors such as silver mica capacitors.

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Suntan tell you be careful when using Mica Capacitor

March 19, 2011 Views
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Mica capacitors are typically found in very small capacitance values (less than 100 nF). They will hold a very high voltage static charge, but only a tiny fraction of a joule, and if you handed it to someone they may not even feel the shock from it. If you really want to give someone a good jolt, you should use an electrolytic cap charged up to about 100V. Get one about 10,000 uF. Be careful, because most caps of this size will not be rated for high voltage; they'll explode if you try to charge them much above their rated working voltage.

Don't get too big a cap, or charge it to too high a voltage, because this sort of prank can cause serious burn injury if you take it too far.

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Suntan Mica Capacitor Specification

March 2, 2011 Views
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Capacitance value, when measured at 1 MHz, will be within specified tolerance limits
Dissipation factor will be less than 0.001 at 1 MHz
Insulation Resistance will be better than 100,000 Mega ohms when measured at 100 Vdc
The chips will withstand two times the rated voltage for 5 seconds without damage

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