Metal Ceramic Compound Resistors

Application Data

Technical Properties for Metal Ceramic Tube Resistors 25/13:

Characteristic Value Units
Tube Outer Diameter da nom 25 +2 -1 mm
Tube Inner Diameter di nom 13 +1 -2 mm
Temperature Coefficient of Resistivity (TCR) (αr) -6 ... -20.10-4 K-1
Temperature Coefficient of Expansion (TCE) (αLE) -3.5 ... -5.10-6 K-1
Specific Electrical Resistivity (ρR) 0.1 ... 1000 Ω.cm
Density (ρ) 2.1 ... 2.4 g.cm-3
Specific Heat (c) 0.708 J.g-1.K-1
Thermal Conductivity > 10 W.m-1.K-1
Bending Strength (Tube) > 20 Nmm-2
Compressive Strength (Disc) > 50 Nmm-2
Maximum Gradient of Voltage (Air) 1.2 kV.cm-1
Maximum Surface Temperature ... 320 ... 400 °C
Specific Continuous Power Dissipation (air) 10 W.cm-1
tube length
Specific Impulse Energy (air) 360 J.cm-1
tube length
Variation of the resistance value after 6 months storage under normal conditions < ± 3 %