RUG-Z Datasheet, PDF (1/1 Pages) RHOPOINT COMPONENTS – Precision Resistor

Precision Resistor Type RUG-Z
Spec Sheet R4611/1 July 97
Technical data
resistance range
tolerances
temperature coefficient tcr ( R > 20mOhm )
applicable temperature range
load capacity
single pulse power load ( R < 10mOhm )
thermal resistance to copper base plate
dielectric withstanding voltage
inductance
stability
1 / 2 / 5 / 10 / 20 / 50 / 100 / 200 / 500mOhm - 1 / 10 / 100Ohm
0.1%, 1%
< ±1 / ±3 / ±5 / ±10ppm/K ( 20°C to 60°C )
-55°C to +85°C
250W
50J ( tp < 10ms )
Rthi < 0.1K/W
500VAC
< 10nH
deviation <0.1% after 2,000h
This high-power resistor in four-terminal design was espe-
cially developed, where high DC or AC currents of low
frequency have to be regulated with precise accuracy and
reproducibility like in current supplies for superconducting
magnets.
Case dimensions are compatible to high-power transistor
modules to a great extent. Current feed is accomplished
with a screw connection between cable and copper
U-terminal. The distortion-protected nut recessed in the
module considerably facilitates assembly.
When assembled on an air or watercooled heatsink, the
resistance deviation caused by temperature change and
temperature coefficient is in most instances negligibly
small.
Pulses up to 1000 W are without detrimental effect based
on the optimized geometrical design and temperature
resistance of the adhesive.
Temperature dependence of the electrical resistance
of ISA-PLAN resistors
P / P _Nenn
1
0.75
0.5
0.25
0
20 40 60 80 100 120
case temperature T_G / [^oC]
power derating curve
dimensions ( mm )
( Technical modifications reserved )
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