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Shunts feature the characteristics of small size, offset free, very low noise, excellent linearity, high long-term stability, low TCR and high precision. Current measurement principle of shunts is also Ohms law, i.e I=V/R. Temperature, long-term stability, inductance and thermal EMF are the main influences of changing resistors resistance and voltage. Microhms precision shunt resistors minimize the effects of external factors on themselves. Microhm shunts cover a full range of size from 0805,1206 to 8420, 8518, which stamped ...
Date：2019-04-29 [More+]
Since resistors are made of conductive materials. We take inductance as an unwanted and parasitic effect. This effect is especially noticeable if the resistor is made out of wire formed into a coil shape. Depending on the application, resistor inductance might be easily disregarded, especially in DC circuits. However, parasitic resistor inductance can be a significant factor in high-frequency AC applications. The reason for this is that the impedance of a resistor rises with the applied voltage frequency due to the increase i...
Date：2019-04-28 [More+]
The shape and size of surface mount resistors ( SMD resistors ) are standardized, most manufacturers use the JEDEC standards. Surface mount resistors are available in all kinds of packages. The mostly used ones nowadays are rectangular. Designing with surface mount resistors, a right solder pad size and land pattern should be used. The following table shows the land pattern for common surface mount packages. The table lists the dimensions for reflow soldering, for wave soldering smaller pads are used. The size of chip resisto...
Date：2019-04-26 [More+]
If we want to light up an LED, a right resistor is a must. If we do a lot of electronics projects, were likely to have dozens of resistors lying around. If we are just green hand, an assortment might need to be prepared. Resistors also come rated to handle varying amounts of power. Higher rated power resistors are able to safely dissipate more heat generated. We know Ohms Law formula is V = I R , where V is the voltage, I is the current, and R is the resistance. To get the V in our formula, we need to know the voltage of our ...
Date：2019-04-25 [More+]
Precision resistor here we mainly refer to thin film resistor. By depositing a thin film of resistive material, such as nickel-chromium on a silicon wafer, precision resistors for the hybrid are produced. Microhm uses standard semiconductor technology etching away the unwanted resistive film and leave the demanded resistor geometries on the silicon wafer. Each circuit contains resistors from one to serveral dozen, which depending on the design. Thin film resistors resistance value is determined by its structure and geometry....
Date：2019-04-24 [More+]
Metal Clad Resistor is a popular resistor in the market. At present, the demand for it is increasing in many industries. For example, battery management systems of photovoltaic power generation and new energy vehicles demand a large number of high stability, high precision aluminum shell resistors, alloy resistors, film resistor and more. The aluminum shell resistor can be used as a good protection because it is applied to the resistor in an aluminum alloy case. The aluminum casing is used in the resistor to consume energy. I...
Date：2019-04-22 [More+]
A resistor is an electronic component that generates heat. When using a resistor, it needs to be designed for heat dissipation. If the resistor is not designed well, it can easily cause the resistor to be broken down or the entire resistor to be damaged. Especially for high-power wirewound resistors, such resistors generate a lot of heat during operation due to their high power. At present, air-cooling uses aluminum radiators, heat pipe radiators, circulating water and more to dissipate heat from high-power winding resistors....
Date：2019-04-22 [More+]
Chip resistors mainly refers to thick film resistor, thin film resistor and metal foil resistor. The first two are traditional and most popular ones. Recent years, metal foil resistors are become popular for its higher precision, lower TCR, and lower inductance as it ismanufactured by alloy resistor materials, including constantan, manganin and more. The size of them can be as small to 0603. The chip resistor is inevitably damaged during the application process. The reasons might be misoperation, service condition or brand. T...
Date：2019-04-22 [More+]
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