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| Precision Resistor Type PLC Spec Sheet R171-1/2 July 97 Technical data resistance range tolerances temperature coefficient tcr ( R > 20mOhm ) applicable temperature range load capacity thermal resistance to ambiente dielectric withstanding voltage inductance stability 2,5mOhm - 1Ohm 1%, 5% < 50ppm/K ( 20C to 60C ) -55C to +125C 1W Rth < 30K/W 50VAC < 15nH 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 The two terminal resistor type PLC was developed to serve as an economic alternative to the type C-N for application as current sensor in linearly regulated power units, switching 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. By an additional thermal contact of the aluminum carrier to a dissipator, e.g., by depressing to a heat sink or casing, the loading capacity can be raised to a manifold. P / P Nenn 1 0.75 0.5 -0.2 -40 -20 0.2 R/R20 [%] 20 40 60 80 100 120 T [oC] 0.25 -0.4 0 20 40 60 80 100 120 TU / [oC] Temperature dependence of the electrical resistance of ISA-PLAN Resistors power derating curve dR/R [%] 2 5 m 10 m 1 20 m 50 m -40 -20 -1 -2 20 40 60 80 > 200 m 100 120 T [oC] dimensions (mm) Change of the R(T)-curve to the TCR of copper terminals for very low ohmic 2-terminal-resistors Spec Sheet R171-2/2 July 97 ordering example: PLC - R010 - 5 type PLC resistance value 10 mOhm tolerance 5% ( Technical modifications reserved ) RHOPOINT COMPONENTS LTD Tel: +44/01883 717988, Fax: +44/01883 712938, Email: sales@rhopointcomponents.com Website: www.rhopointcomponents.com |
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