High Precision Alloy Resistance

If you are looking for a resistor that is incredibly precise and reliable, look no further than high precision metal foil resistors. These resistors are ideal for any application where precision is key, from medical equipment and aerospace technology to telecommunications and automotive design.

At their core, high precision metal foil resistors are made from a special alloy foil that is carefully designed and manufactured to deliver a precise level of resistance. This alloy foil is then bonded directly onto a ceramic substrate, ensuring excellent stability and durability over a wide range of temperatures and environmental conditions.

 

One of the main benefits of high precision metal foil resistors is their incredibly low temperature coefficient of resistance (TCR), which means that their resistance value remains virtually constant over a wide range of operating temperatures. This makes them ideal for use in applications where precise temperature control is critical, such as medical equipment and scientific instruments.

Another advantage of high precision metal foil resistors is their excellent long-term stability, which ensures reliable and consistent performance over many years of use. This makes them perfect for use in applications that require high reliability and durability, such as aerospace and defense systems.

So if you are looking for a high precision resistor that delivers exceptional performance and reliability, look no further than high precision metal foil resistors. With their excellent stability, low TCR, and precise resistance values, they are the perfect choice for any application where precision is critical.

 

 

● Resistance ranges from 0.005Ω to 1000Ω

● Rated power up to 50W

● Precision of resistance value is 0.01%

● Temperature coefficient is ±2ppm/K

● Very low susceptibility

● Load stability up to 0.02%

 

Table 1-Parameters
Mode		RNG3825
Stopped value interval		From 0.005 to 50Ω
Power rating	The heat sink is not installed70℃	3w
	Add radiator	50w
accuracy		0.01%/ 0.02%/ 0.05%/ 0.1%/ 0.25%/ 0.5%/ 1%
Thermal resistance		1.6KW
stability (1000h)		0.01%/ 0.02%/ 0.05%/ 0.1%/ 0.2%/ 0.5% (It also depends on the pressure)
temperature coefficient		±10ppm/K (20 to 60℃) ±5ppm/K (20 to 60℃) ±2ppm/K (20 to 60℃)
Pressure resistance value		500VDC
Maximum current		50A
Thermoelectric potential		<1μV/K
Operating temperature interval		-40 to 130℃
Resistance material		Manganese copper, nichrome foil
placode		Aluminium oxide, Red copper
Protective layer		Epoxy resin
Electrode material		Tinned copper
Pin count		4
Maximum torque		1Nm

 

Figure 2-The reduced power curve
	Rated Power Note- SHR Series resistance connected to a suitable radiator for use. The maximum internal temperature is 130°C. Using the following formula: Where: RθH= thermal resistance of the radiator (K / W) RθR = electric resistance of thermal resistance (K / W) TMAx = maximum resistance maximum working temperature TA = Ambient temperature of radiator (℃) P = power of resistor (W)

 

Figure 3-Temperature coefficient

Product change chart △R/RPPM

 

Table 4-Table 4 Line connection

For low resistance resistance (less than 10 Ω), the increase in the resistance and temperature coefficient of the copper pin exceeds the resistance itself. A four-legged Kelvin connection is recommended, as shown in the figure below. The load current on the V-pin will cause a measurement error.

 

Table 5-Product size drawing

 

Support Customization

 

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