Spec Sheet R4611/1 July 97
Precision Resistor Type RUG-Z
( Technical modifications reserved )
dimensions ( mm )
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.
Pulses up to 1000 W are without detrimental effect based
on the optimized geometrical design and temperature
resistance of the adhesive.
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.
When assembled on an air or watercooled heatsink, the
resistance deviation caused by temperature change and
temperature coefficient is in most instances negligibly
small.
RHOPOINT COMPONENTS LTD
Tel: +44/01883 717988, Fax: +44/01883 712938, Email: sales@rhopointcomponents.com Website: www.rhopointcomponents.com
power derating curve
0
20
40
60
80
100
120
case temperature T
G
/ [
o
C]
0.25
0.5
0.75
1
P / P
Nenn
Temperature dependence of the electrical resistance
of ISA-PLAN resistors
Technical data
resistance range
1 / 2 / 5 / 10 / 20 / 50 / 100 / 200 / 500mOhm - 1 / 10 / 100Ohm
tolerances
0.1%, 1%
temperature coefficient tcr ( R > 20mOhm )
< 1 / 3 / 5 / 10ppm/K ( 20C to 60C )
applicable temperature range
-55C to +85C
load capacity
250W
single pulse power load ( R < 10mOhm )
50J ( tp < 10ms )
thermal resistance to copper base plate
Rthi < 0.1K/W
dielectric withstanding voltage
500VAC
inductance
< 10nH
stability
deviation <0.1% after 2,000h
PDF 
ZIP