WEE Technology Company Limited - WEE are Capacitors Specialist

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WEE Technology Company Limited - WEE are Capacitors Specialist

What are the differences between carbon film resistance and metal film resistance

1. The carbon film resistance has a negative temperature coefficient, while the metal film resistance has a small positive temperature coefficient;

2. Carbon film resistance is an ordinary resistance, and its accuracy is generally not very high, while metal film resistance has higher accuracy than carbon film resistance. However, due to the improvement of current technology, this method is sometimes not very desirable;

3. The appearance of carbon film resistors is mostly khaki or pink, while the appearance of metal film resistors is mostly blue;

4. By looking at the color of the protective paint, the black protective film is carbon film resistance, while the bright white protective film is metal film resistance.

What are the characteristics of carbon film resistance and metal film resistance

1、 Carbon film resistance

For the carbon film resistance, it uses carbon to precipitate on the magnetic rod or porcelain tube, and at the same time forms a layer of crystalline carbon film on its surface. By changing the thickness of the carbon film and changing the degree of the carbon film resistance by grooving, the required resistance value is finally obtained. Finally, the surface is coated with epoxy resin to strengthen the sealing. The appearance color is basically earthy yellow, but there are also other colors, such as pink.

The color ring is composed of four rings. The resistance range is 1 Ω~10M Ω. The rated power is 0.125W, 0.25W, 0.5W, 1W, etc. The accuracy range is ± 10%, ± 5%, ± 2%. This resistance is generally large and is often used in low-cost products, such as power supply products and chargers. This type of resistance is not recommended for starting resistance, because the impact resistance is relatively defective.

2、 Metal film resistance

As for the metal film resistor, it is formed by vacuum evaporation or infiltration on the ceramic pipe rack to form a layer of metal film, which is attached to the surface of white ceramics. It is cut to adjust the resistance value to obtain a more precise resistor. This resistor has high precision, small volume, good stability and high cost. It is usually used in wireless electronic equipment, especially in occasions with higher precision requirements. Its appearance color is mostly blue.

WEE Technology Company Limited - WEE are Capacitors Specialist
Industry's lower cost and deliver from stock.
Exceptional long term stability.
Exceeds carton comp MIL-R-11 performance
Standard tolerance: ±2%, ±5%
Variety of packing: Bulk , strip pack. 26mm and 52mm tape and reel, cut and formed

https://www.weetcap.com/Resistors/WEET-CR-Sereis-Carbon-Film-Resistor.html

Featuring consistency and stably-controlled, these carbon film resistors with reasonable prices are widely and largely be used in the electronic, electrical and information industries.
This resistor is a ceramic bar tightly coated with a carbon film which is composed of carbon separately from organic compound through the treatment of high temperature vacuum.
After the carbon coated bar is connected with proper joint and engraved with grooves, its surface is finished with epoxy resin so that the bar is enclosed with a protective film.

Application: all kinds of customer devices.

WEE Technology Company Limited - WEE are Capacitors Specialist

WEET MF Series Metal Film Precision Resistor Features

High precision and low temperature coefficient

Resistance Tolerance: ±0.1%, ±0.25%, ±0.5%, ±1%, ±0.05%,±0.01%,

T.C.R/℃: ±5ppm/℃,±10ppm/℃,±15ppm/℃,±25ppm/℃,±50ppm/℃,±100ppm/℃

Mainly used in the industries of precision instruments, electronic measurement.

https://www.weetcap.com/Resistors/WEET-MF-Series-Metal-Film-Precision-Resistor.html

WEE Technology Company Limited - WEE are Capacitors Specialist

WEE Technology focus on axial lead electrolytic capacitor, WEET brand, non-polar capacitor, high-temperature resistant capacitor, high-frequency capacitor, super capacitor, axial capacitor, pencil capacitor, audio capacitor.

These products are mainly used in switching power supply, power adapter, charger, various household appliances, audio equipment, stage lighting, LED lamp drive power supply, electric vehicle charger, computer power supply, electric welding machine, frequency converter and other fields.

WEE Technology Company Limited - WEE are Capacitors Specialist
WEE Technology focus on axial lead electrolytic capacitor, WEET brand, non-polar capacitor, high-temperature resistant capacitor, high-frequency capacitor, super capacitor, axial capacitor, pencil capacitor, audio capacitor
These products are mainly used in switching power supply, power adapter, charger, various household appliances, audio equipment, stage lighting, LED lamp drive power supply, electric vehicle charger, computer power supply, electric welding machine, frequency converter and other fields.

WEET WAA Axial 85℃ 2000H Polarized Aluminum Electrolytic Capacitors Standard Low Voltage
Operating Temperature： -40℃~+85℃
Rated Voltage： 6.3V ~ 450V
Capacitance Range： 1uF ~ 10000uF
Capacitance Tolerance： ±10%(K), ±20%(M)
https://www.weetcap.com/Aluminum-Electrolytic-Capacitors/WEET-WAA-Axial-85C-2000H-Polarized-Aluminum-Electrolytic-Capacitors-Standard-Low-Voltage.html

WEET WAB Axial 105℃ 1000H Polarized Aluminum Electrolytic Capacitors Super Low Voltage
Operating Temperature： -40℃~+105℃
Rated Voltage： 6.3V ~ 450V
Capacitance Range： 1uF ~ 4700uF
Capacitance Tolerance： ±10%(K), ±20%(M)
https://www.weetcap.com/Aluminum-Electrolytic-Capacitors/WEET-WAB-Axial-105C-1000H-Polarized-Aluminum-Electrolytic-Capacitors-Super-Low-Voltage.html

Dimension diameter: Φ 5mm to Φ 25mm
Height (length): 11mm to 52mm
Voltage: 6.3V to 500V
Temperature: - 40 ℃ to+85 ℃，2000H; - 40 ℃ to+105 ℃, 1000H
Capacity: 0.1uF to 10000uF
Service life: 1000 hrs to 2000 hrs
Taping Product size: Φ 5mm to Φ 16mm
Package: horizontal (axial through core) electrolytic capacitor
Polarity: Polarized

WEET also can provide from polarity to non polarity (bipolar, horizontal non polarity) electrolytic capacitor

Characteristics: from ordinary to special (high-frequency low impedance electrolytic capacitor, low leakage electrolytic capacitor, special size electrolytic capacitor)

Products used in: communication products (power supply, main plate), frequency converter, power supply, audio and frequency divider, LCD, energy-saving lamp, ballast, camera Audio amplifier, electronic digital picture frame, automotive electronics,

WEE Technology Company Limited - WEE are Capacitors Specialist

Capacitance is the key to ensure the quality of the motherboard and graphics card, and it can also be said to be the key to measure the board workmanship. Whether it's the popular solid state capacitor or the electrolytic capacitor that is scolded by many netizens, their functions are the same. The role of the capacitor in the motherboard and graphics card is mainly to ensure the stability of the voltage and current (playing a filtering role). The main function of the capacitor is to further filter some current spikes and clutter, so as to ensure the stability of the power supply of each part. The role of capacitance is similar to that of a reservoir. It will discharge water when the water flow is large, and store water when the water flow is small, so as to ensure the balance of storage capacity in the reservoir.

Low ESR SMD Polymer Aluminum Conductive Solid Electrolytic Capacitors Advantages:

Advantages of using solid state capacitor: explosion-proof slurry

Advantages of using solid state capacitor: long life and good stability

Advantages of using solid state capacitor: small equivalent series resistance

Advantages of using solid state capacitor: solid state capacitor is much better than liquid aluminum capacitor

Advantages of using solid-state capacitors: large capacity

https://www.weetcap.com/Aluminum-Electrolytic-Capacitors/WEET-WPB-Super-Low-ESR-Radial-Polymer-Aluminum-Solid-Electrolytic-Capacitors.html

WEE Technology Company Limited - WEE are Capacitors Specialist

WEET SQP Series Audio Grade 20W Axial Cement Ceramic Resistor Cross and Replacement For JANTZEN-AUDIO

Available in 5, 10 and 20 watt versions

Affordable and reliable

Easy to apply on PCB crossovers

High temperature tolerance and resistant to humidity and shock

Small in dimensions, excellent in stability with high tolerance for temperature, humidity and shock

Completely insulated making them highly suitable for PCB crossover application

In the high values the winding cores are replaced by high power handling film

Instant overload capacity, low noise figure and low annual shift in resistance value

Max overload voltage is 2 times of max. working voltage

Power handling film means that decreasing the resistance values compared to models with wound resistance wire.

WEE Technology Company Limited - WEE are Capacitors Specialist
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

WEE Technology Company Limited - WEE are Capacitors Specialist

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

WEE Technology Company Limited - WEE are Capacitors Specialist

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