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Carbon Film Resistor Structure
Carbon film resistor is a kind of film resistor. It is a resistor formed by depositing a layer of carbon film on the ceramic skeleton from the crystalline carbon decomposed by hydrocarbons under high temperature and vacuum. The resistance is controlled by controlling the thickness of the carbon film and etching the film. The external surface of the resistor is generally coated with green or orange protective paint.
https://www.weetcap.com/Resistors/WEET-CR-Sereis-Carbon-Film-Resistor.html
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Metal film resistor is a resistor that sprays a metal film onto a ceramic substrate and then cuts it into a spiral. SMD metal film precision resistor (full English name: Metal Film Precision Resistor), that is, metal film resistor is also called wafer resistor in China due to its cylindrical shape without leads. The length, thickness and width of the metal helix determine the precise resistance value. Metal film resistors provide more accurate resistance values than other types of film resistors (carbon film resistors). Like carbon film resistors, metal film resistors are little affected by temperature changes and aging. They also make little noise inside. In terms of overall performance, metal film resistor is the best type, followed by carbon film resistor, followed by carbon composite resistor.
https://www.weetcap.com/pdf/WEET-MF-Sereis-Metal-Film-Precision-Resistor.pdf
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Wire wound resistors are made by winding the resistance wire non-corrosive, heat-proof and humidity-proof material.
Delivery from stock in bulk taped, and strip pack.
Exceptional long-term stabiligy
Standard tolerance：± 1%, ± 2%, ± 5%
https://www.weetcap.com/Resistors/WEET-KNP-KNS-Series-Wire-Wound-Resistor.html
| Power Rating 70℃ | KNP-1/2W | KNP-1W | KNP-2W | KNP-3W | KNP-4W | KNP-5W | KNP-7W | KNP-8W | KNP-10W |
| Series Number | KNS-1W | KNS-2W | KNS-3W | KNS-4W | KNS-5W | KNS-7W | KNS-10W | - | - |
| Operating Temp. Range | -55℃~ +155℃ | ||||||||
| Dielectric Withstanding Voltage(AC) | 500V | 500V | 500V | 500V | 500V | 500V | 500V | 800V | 1000V |
| Value Range ±5% | 0.1Ω-300Ω | 0.1Ω-499Ω | 0.1Ω-1.5KΩ | 0.1Ω-1.5KΩ | 0.1Ω-1.5KΩ | 0.5Ω-3KΩ | 0.5Ω-3KΩ | 1Ω-3KΩ | 1Ω-3KΩ |
| Temp. Coefficient (by Type) | ±350ppm/℃ | ||||||||
WEET Hand Made Cement Ceramic Resisotrs SQM SQP and SQZ Non-Flammable and Heat Resistant Audio Grade
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Cement ceramic resistor is a resistor sealed with refractory mud (commonly known as cement, actually not cement).
The outer side of the cement resistance is mainly made of ceramic materials (generally divided into high alumina porcelain and feldspar porcelain).
Cement Resistors Characteristic:
1. Shock resistance, moisture resistance, heat resistance, good heat dissipation, low price and other characteristics.
2. Fully insulated, suitable for printed circuit boards.
3. The wire is wound on the porcelain rod and then the joint is welded to make the accurate resistance value and prolong the service life.
4. The high resistance value is made of metal oxide film (MO) instead of winding.
5. Excellent heat resistance, low resistance temperature coefficient, linear change.
6. Resistance to short-time overload, low noise, resistance value has no change over the years.
7. Good explosion-proof performance and protection.
https://www.musicaps.com/product/WEET-SQM-Series-Radial-Cement-Ceramic-Resistor.html
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https://www.weetcap.com/Resistors/WEET-MO-Series-Metal-Oxide-Resistor.html
High Power-to-Size ratio for significant space savings
Excellent long-term stability
Complete flameproof construction
High surge/overload capability
Wide Resistance range: 1Ω~180KΩ
Standard tolerance: ±1%, ±2%, ±5%
Complete flameproof construction. Metal Oxide Film Resistors also can replace many low power general purpose wire wound applications, saving both money and time with shorter delivery cycles.
These Metal Oxide Film Resistors offer excellent performance in applications where stability and uniformity of characteristics are desired.
They provide lower cost alternative to Carbon Composition Resistors and General Purpose Metal Films.
Metal Oxide Film resistors also can replace many low power general purpose wire wound applications.
Saving both time and money, with shorter delivery cycles
WEE Technology Company Limited - WEE are Capacitors Specialist
KNP (fireproof coating type) wire resistor KNP series,
Wrap the alkali free ceramic core with metal alloy resistance wire and coat it with silicone resin
Typical characteristic
-Highly stable pulse characteristics
-Super heat dissipation, high heat conduction porcelain core
-Immediate overload capacity
-Low noise
-The stability is good, and there is no annual change in resistance value
-Available tolerance: ± 5%, ± 2%, ± 1%
- Finishing painting, Silicone resin is used.
- Material: Ceramic core
Datasheet: https://www.weetcap.com/pdf/WEET-KNP-KNS-Sereis-Wire-Wound-Resistor.pdf
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Coating by epoxy resin, creates the excellent humidity resistance and prevents body from damaging during soldering and washing.
Miniature size, wide capacitance, tape and reel packaging available for auto-placement.
Industry standard size and various load spacing available.
https://www.weetcap.com/Ceramic-Capacitors/WEET-WCB-Radial-NPO-COG-X7R-Y5V-MONO-Multilayer-Monolithic-Ceramic-Capacitors.html
| Operating Temperature： | NPO (COG) X7R:-55℃~+125℃, Y5V (Z5U) -25℃~+85℃ | |
| Rated Voltage： | DC 25V, 50V, 100V | |
| Size Code： | 0805 1206 1210 1812 2225 3035 | |
| Capacitance Range： | 0.5pF - 22µF | |
| Capacitance Tolerance： | ±5%, ±10%, ±20%, | |
| Pitch Size： | 2.54 mm, 5.08 mm, 7.5 mm | |
WEE Technology Company Limited - WEE are Capacitors Specialist
Cement resistors are manufactured by winding the ceramic rods with metal alloy resistance wire and put it in a fireproof ceramic box then concrete with non-flammable and heat-resistant cement.
Excellent heat resistance, low temperature coefficient of resistance and linear change.
It can withstand short-term overload, low noise, and the resistance value has not changed over the years.
Good explosion-proof performance and protection.
https://www.musicaps.com/product/WEET-SQP-Axial-Cement-Ceramic-Resistor.html
https://www.weetcap.com/pdf/WEET-SQP-Sereis-Axial-Cement-Housed-Ceramic-Resistor.pdf
| WEET SQP Series Axial Cement Ceramic Resistor - Audio Grade 10W Cross to Jantzen Audio | ||
| Watt | R [Ω] | Full Information String |
| 10 | 0.10 | Res.0,10Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 0.22 | Res.0,22Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 0.27 | Res.0,27Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 0.33 | Res.0,33Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 0.39 | Res.0,39Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 0.43 | Res.0,43Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 0.47 | Res.0,47Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 0.51 | Res.0,51Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 0.56 | Res.0,56Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 0.62 | Res.0,62Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 0.68 | Res.0,68Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 0.75 | Res.0,75Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 0.82 | Res.0,82Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 0.91 | Res.0,91Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 1.00 | Res.1,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 1.10 | Res.1,10Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 1.20 | Res.1,20Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 1.30 | Res.1,30Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 1.50 | Res.1,50Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 1.60 | Res.1,60Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 1.80 | Res.1,80Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 2.00 | Res.2,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 2.20 | Res. 2,20Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 2.40 | Res. 2,40Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 2.70 | Res. 2,70Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 3.00 | Res. 3,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 3.30 | Res. 3,30Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 3.60 | Res. 3,60Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 3.90 | Res. 3,90Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 4.00 | Res. 4,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 4.30 | Res. 4,30Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 4.70 | Res. 4,70Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 5.10 | Res. 5,10Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 5.60 | Res. 5,60Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 6.20 | Res. 6,20Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 6.50 | Res. 6,50Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 6.80 | Res. 6,80Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 7.00 | Res. 7,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 7.50 | Res. 7,50Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 8.00 | Res. 8,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 8.20 | Res. 8,20Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 9.10 | Res. 9,10Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 10.00 | Res. 10,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 12.00 | Res. 12,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 15.00 | Res. 15,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 18.00 | Res. 18,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 20.00 | Res. 20,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 22.00 | Res. 22,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 27.00 | Res. 27,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 33.00 | Res. 33,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 36.00 | Res. 36,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 39.00 | Res. 39,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 43.00 | Res. 43,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 47.00 | Res. 47,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 51.00 | Res. 51,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 56.00 | Res. 56,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 62.00 | Res. 62,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 68.00 | Res. 68,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 75.00 | Res. 75,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 82.00 | Res. 82,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 91.00 | Res. 91,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 100.00 | Res. 100,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 120.00 | Res. 120,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 150.00 | Res. 150,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 180.00 | Res. 180,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 220.00 | Res. 220,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 330.00 | Res. 330,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
| 10 | 470.00 | Res. 470,00Ω 10 W 5% wire cer. SQP Ty-Ohm dim.48/10/10 tab Cu/Sn 0,8/31 |
WEET How Much Do You Know About the Effect and Performance of Resistor on Sounding in Sound Applicat
WEE Technology Company Limited - WEE are Capacitors Specialist
WEET How Much Do You Know About the Effect and Performance of Resistor on Sounding in Sound Application
1. Metal Film Resistor
It has the characteristics of low noise, high temperature resistance, small size, high stability and precision.
The disadvantage is that the price is more expensive than carbon film resistance.
2. Carbon Film Resistor
The stability is relatively high and the noise is relatively low, but in terms of quality, it is still worse than the metal film resistance, but it is cheaper than the metal film resistance.
Therefore, this kind of resistance is widely used in various electronic circuits, including the gall machine circuit.
3. Carbon Composition Resistor
It is the earliest resistor produced. Because of its poor resistance stability, high noise and temperature coefficient, it has been replaced by metal film resistance and carbon film resistance.
4. Wire Wound Resistor
It is made by winding resistance wires on a ring-shaped framework. Its stability and precision are very high.
However, due to its large size, it is generally only used in high-power places, such as the power supply circuit of a galloping machine.
https://www.weetcap.com/Resistors/
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1. Material introduction of MMKP82 capacitor.
MMKP82 capacitor is a kind of CBB capacitor, so its main material is also metallized polypropylene film. MMKP82 capacitor uses polypropylene film as the medium,
high-temperature resistant double-sided metallized polypropylene film with excellent self-healing characteristics as the electrode,
and the two ends are sprayed with gold to form a non inductive structure.
It is led out in one direction, and the lead out is made of tinned copper wire (Cu wire) and encapsulated with flame-retardant epoxy resin.
2. Why are MMKP82 capacitors so rare?
Generally, we use CBB81 capacitors in resonant circuits.
However, the biggest inconvenience of this type of capacitor is that it is too large, and it will take up a lot of space to install on the circuit.
Moreover, it is also a powder coated capacitor. Its high temperature resistance and high humidity performance are not good. This problem can be solved by using MMKP82 capacitors.
3. Why is it so difficult to produce MMKP82 capacitors?
The double-sided metallized polypropylene film is not easy to produce, and the manufacture of this capacitor also requires customized special winding machine equipment, which is expensive;
In addition, during the manufacturing process, the operating skills of operators are very strict, the operation efficiency is low, and the overall cost is high.
Therefore, at present, there are not many manufacturers that can produce double-sided metallized polypropylene film capacitors with plastic shells.
However, at present, there are some powerful manufacturers in China that can produce such capacitors, and their performance is much better than CBB81 capacitors.
4. What is the function and application of MMKP82 capacitor?
MMKP82 capacitor has the same function as CBB81 capacitor. At present, it is mainly used in high voltage, high frequency and pulse circuits.
For example, the performance of electric vehicle charging pile power control board, high-power LED driving power supply, mining machine power supply, ultrasonic power supply and other circuits is better than that of CBB81 capacitor.
