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| Precision Resistor Type PMA Spec Sheet R501-1/2 01/99 Technical data resistance range tolerances temperature coefficient tcr ( R > 20mOhm ) applicable temperature range load capacity thermal resistance to ambiente dielectric withstanding voltage inductance stability Remarks: 2mOhm - 500mOhm 1%, 5% < 30ppm/K ( 20C to 60C ) -55C to +125C 3W Rth < 10K/W 100VAC < 10nH deviation <0.5% after 2,000h - Standard resistance values according to E12 with the additional values of 2 and 5 - Minimum quantity of other values on request This resistor has been developed especially for current sense applications in SMD-power modules. The PMA has been designed for flip-chip mounting on the pc-board. All standard soldering processes like reflow-, infrared-, vapor phase-, dip- and wave-soldering can be used. The heat which is generated by the measuring current is conducted very efficiently to the pc-board via the heat conductive substrate and the solder joints. -40 -20 R/R20 [%] 0.2 20 40 60 80 100 120 T [oC] -0.2 -0.4 Temperature dependence of the electrical resistance of ISA-PLAN resistors P / P Nom 1 0.75 stability: 0.5% reduced stability: 1% 0.5 0.25 0 20 40 60 80 100 120 140 terminal temperature TK / [oC] pad size (bottom view) power derating curve RHOPOINT COMPONENTS LTD 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 Spec Sheet R501-2/2 01/99 proposal for pc-board layout - form A proposal for pc-board layout - form C dimensions ( mm ) Tape & Reel information 16 mm belt according to DIN IEC 286-3 parts/reel: 2500 pcs ordering example: PMA-C - R010 - 5 type PMA version C resistance value tolerance 10 mOhm 5% ( Technical modifications reserved ) RHOPOINT COMPONENTS LTD 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 |
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