Precision Resistor Type PMA Spec Sheet R501-1/2 01/99 Technical data resistance range 2mOhm - 500mOhm tolerances 1%, 5% temperature coefficient tcr ( R > 20mOhm ) < ±30ppm/K ( 20°C to 60°C ) applicable temperature range -55°C to +125°C load capacity 3W thermal resistance to ambiente Rth < 10K/W dielectric withstanding voltage 100VAC inductance < 10nH stability deviation <0.5% after 2,000h Remarks: - 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. ∆R/R20 [%] 0.2 -40 -20 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 reduced stability: 1% 1 0.75 stability: 0.5% 0.5 0.25 0 pad size (bottom view) 20 40 60 80 100 120 140 terminal temperature TK / [oC] power derating curve RHOPOINT COMPONENTS LTD Holland Road, Hurst Green, Oxted, Surrey, RH8 9AX, ENGLAND Tel: +44/01883 717988, Fax: +44/01883 712938, Email: [email protected] 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 version PMA 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: [email protected] Website: www.rhopointcomponents.com