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更新时间： 2024-11-27 06:04:03

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Precision Resistor

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Precision Resistor Type PLC

Spec Sheet R171-1/2 July 97

Technical data

resistance range

tolerances

2,5mOhm - 1Ohm

1%, 5%

temperature coefficient tcr ( R > 20mOhm )

applicable temperature range

load capacity

< ±50ppm/K ( 20°C to 60°C )

-55°C to +125°C

thermal resistance to ambiente

dielectric withstanding voltage

inductance

Rth < 30K/W

50VAC

< 15nH

stability

deviation <0.5% after 2,000h

Remarks:

- Standard resistance values according to E6 ( Typ PLC E12 ) with the additionel values of 2 and 5

- Minimum quantity of other values on request

ThetwoterminalresistortypePLCwasdevelopedtoserve Byanadditionalthermalcontactofthealuminumcarrierto

as an economic alternative to the type C-N for application a dissipator, e.g., by depressing to a heat sink or casing,

ascurrentsensorinlinearlyregulatedpowerunits,switching the loading capacity can be raised to a manifold.

units, and current sources.

A decisive feature of the resistor is the high transient

overload capacity based on its good thermal abductance

from resistor material to aluminum substrate.

∆R/R₂₀[%]

P / P _Nenn

0.75

0.5

0.2

-40 -20

80 100 120

T [^oC]

-0.2

-0.4

0.25

100

120

T_U/ [^oC]

power derating curve

Temperature dependence of the electrical resistance

of ISA-PLAN Resistors

dR/R [%]

5 mΩ

10 mΩ

20 mΩ

50 mΩ

-40 -20

20 40 60 80 100 120

> 200 mΩ

T [^oC]

-1

-2

dimensions (mm)

Change of the R(T)-curve to the TCR of copper terminals

for very low ohmic 2-terminal-resistors

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