metal clad resistors

The IRS30, IRS50 are slim and flat economical resistors. These models are ideal for applications where spaceand funds are at a premium. The most common applications for these models are motor drives, brakingand snubber applications and power sources for industrial equipment.SPECIFICATIONSMODEL Wattage RatingOn Heat Sink [W] ResistanceRange [ohms] Dimensions Weight[g] L1+-1 L2+-1 IRS 30 30 1 - 420 65 57 65 IRS 50 50 1-500 90 78 50 Available Tolerances: +-0.5(D), +-1.0(F), +-2.0(G), +-10(K) DIMENSIONSCHARACTERISTICSTemperature Range -55-200C Insulation Resistance 20Mohm Minimum Dielectric Strength Available Options: AC1500V, 2500V; Max. Leakage Current: 2mA Temp. Coefficient +-260ppm/C Maximum Short Time Overload +-[2%+0.05ohms] 5 X Power Rating, 5sec. Thermal Shock +-[2%+0.05ohms] Power Rating 30min., -25C 15min. Load Life +-[5%+0.05ohms] Power Rating 1.5hrs. on, 30min. off, 500hrs. SURFACE TEMPERATURE INCREASE VS POWER LOADDERATING CURVE1/ On chassis, 30W, 50W (heatsink size 200X200X3mm)2/ Free Air, 30W3/ Free Air, 50WORDERING PROCEDURE EXAMPLE