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A-H2 Datasheet, PDF (1/2 Pages) RHOPOINT COMPONENTS – Precision Resistors
Precision Resistors
Typ / type A-H
Ausgabe / Issue : 31/10/2000
Technical data
available resistance values version A-H1
tolerances
temperature coefficient tcr ( R > 20mOhm )
applicable temperature range
load capacity
thermal resistance to aluminium base plate
thermal resistance to ambience
dielectric withstanding voltage
inductance (R = 10mOhm)
stability (at 125°Cfoil temperature)
(1,2,5,10, 22,50,100,200 ,500) mOhm (1, 2, 5, 10, 20,100) Ohm
0.1%, 0.5%, 1%
< ±10ppm/K ( 20°C to 60°C )
-55°C to +125°C
10W with heatsink provided
Rth < 3K/W
15K/W
500VAC
< 10nH
deviation <0.1% after 2,000h
Remarks:
- please note that the above standard values are available
- Tolerance 0.1% for values from 5 mOhm
The Resistor type A-H with its isolated current and voltage
connections configured as a four-terminal resistor ( i.e.,
Kelvin connection ) is ideally suited for precise current
measurement, current limitation or regulation in power
units, current sources, and electronic loads. It is also
applied for current measurements in pulse width modulated
( PWM ) control circuits for inductive users such as servo
and stepper motors and solenoid driver circuits.
∆R/R20 [%]
1
0.5
-40 -20
-0.5
20 40 60 80 100 120
T [oC]
Design in foil technique and application of precision resistance
alloy MANGANIN warrants for a long-term stability. By
optimization of the shape, a high load capacity was obtained
while maintaining accuracy and low inductance. The low
thermal resistance to the aluminum base plate of < 3 K/W
permits loading up to 10 W with only little self-heating.
-1
Temperaturabhängigkeit des elektrischen Widerstandes von
MANGANIN-Widerständen
temperature dependence of the electrical resistance of
MANGANIN-resistors
P / P Nenn
1
0.75
0.5
0.25
0
20 40 60 80 100 120
TU / [oC]
power derating curve
Technische Änderungen vorbehalten - technical modifications reserved
RHOPOINT COMPONENTS LTD
A-H 1 / 2
Holland Road, Hurst Green, Oxted, Surrey, RH8 9AX, ENGLAND
Tel: +44/01883 717988, Fax: +44/01883 712938, Email: sales@rhopointcomponents.com Website: www.rhopointcomponents.com