Precision Power Type Metal Foil Sampling Resistor

Precision is an important aspect of any electrical circuit, and one way to ensure it is by utilizing metal-foil sampling resistors. These resistors offer high accuracy and stability over a wide range of temperatures and frequencies, making them ideal for precision applications.

 

One of the key benefits of metal-foil sampling resistors is their high power rating. They can handle large amounts of power, even in small package sizes. This makes them well-suited for use in power electronics, where it is essential to have components that can withstand high power levels without failing.

Metal-foil sampling resistors are also highly reliable and have a long lifespan, which contributes to their popularity in precision applications. The metal-foil construction ensures that the resistors are extremely stable and resistant to thermal and electrical stresses, so they can maintain their accuracy over time.

Another advantage of metal-foil sampling resistors is their ability to be customized to meet specific requirements. They can be made in a wide variety of shapes and sizes, with different resistor values and tolerances, to suit a range of applications. This flexibility makes them a popular choice in both commercial and industrial settings.

 

Despite their many benefits, metal-foil sampling resistors do come with a relatively high cost compared to other types of resistors. However, the advantages they offer in terms of precision, reliability, and customizability more than make up for the additional expense, particularly in applications where accuracy and stability are critical.

In conclusion, metal-foil sampling resistors offer an excellent solution for precision applications that require high accuracy, stability, and power handling. They are a highly reliable and customizable option that can be tailored to meet specific requirements, though they do come with a higher cost compared to other types of resistors. Overall, their benefits make them a popular choice in a wide range of applications, from power electronics to laboratory testing equipment.

 

RNG power four-line sampling resistor uses the principle of resistance strain. Using the plane non-inductive structure design, High accuracy, high specific power, high stability, low temperature coefficient in a wide temperature range, can be achieved ± 1 PPM, widely used in stable measurement system, standard source, measurement test. Relay protection device, transmission Electric field. Resistance range 0.001R-200 KR, accuracy ± 0.01% - ± 1%. Fixed mode can be determined according to Users need to process it.

 

 

Rated power is 70℃	resistance	accuracy	Temperature coefficient TCR (ppm/°C) 55°C to + 125°C
10W (plus radiator, without radiator power 3W)	0.001R-200K	±0.01% ±0.05% ±0.1% ±0.5% ±1%	±5ppm ±2ppm ±1ppm

Note: The size of Φ in the lead diameter of the current end depends on the current. (Power The corresponding volume is for reference only, and the volume is mainly determined by the resistance value and the corresponding current.)

 

 

 

Distribution parameters: C '0.5 PFL' 0.1 μ H

Response time: <1ns

Current noise: <-42 db

Storage stability: 0.003% / year or <0.005% / 3 years

 

A) In the process of installing precision metal foil resistor, if the machine needs to shape the lead end, the lead of the resistor to damage the internal structure and affect the use.

B) When welding the resistor, pay attention to the power of the electric flipping iron should not be greater than 25W, and the welding time should be as short as possible, generally not exceeding 5s.

C) In the "DC resistance" measurement of high precision metal foil resistors, it is recommended to use no less than 71 / 2 digit table, and use the four-end method to ensure the accuracy of the resistance measurement.

The measured ambient temperature was 25℃± 2℃.

D) For the use of power consumption reduction, in order to improve the stability of the resistors, it is recommended to reduce the rated power consumption according to the allowable deviation of the resistance value

 

 

1). The above resistor is best used in the case of external radiator, the performance is more stable and reliable, if the radiator is not added, the power of the resistor should be selected to reduce power consumption.

2). When installing the resistor with a radiator, the surface of the installation body in contact with the radiator should be straight, no burr, foreign matter, etc. If necessary, a thin layer of thermal silicone grease should be applied on the contact surface. When installing fastening screws (or screws), both sides (diagonal) should be gradually strengthened, and finally fully tightened. You must not tighten one side first and then screw the other side. When installing the high-power radiator resistor, a spring gasket should also be added.

 

model	resistance	accuracy	temperature coefficient
RNG	1R	± 0.01%	± 5ppm

 

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