SURFACE MOUNT RESISTORS RoHS ü RMF Series: Fusible Thick Film Surface Mount INTRODUCTION D RFE International, Inc. offers a wide range of chip resistors to meet your application requirements. They are made with metal glazed thick film on a high purity ceramic substrate which is overcoated for stability and protection. These resistors are lead free. The RMF Series Fusible Resistor is ideal for circuits where a predictable fusing time is important. Glass Passivation H W C L DIMENSIONS Dimensions (mm) Type L W H C D RMF04 (0402) 1.0 + 0.1 0.5 + 0.05 0.35 + 0.05 0.20 + 0.1 0.2 + 0.1 RMF06 (0603) 1.6 + 0.2 0.8 + 0.15 0.50 + 0.1 0.30 + 0.2 0.3 + 0.15 RMF10 (0805) 2.0 + 0.2 1.25 + 0.15 0.50 + 0.15 0.40 + 0.2 0.3 + 0.15 RMF12 (1206) 3.2 + 0.2 1.6 + 0.12 0.60 + 0.15 0.45 + 0.2 0.4 + 0.2 RMF25 (1210) 3.2 + 0.2 2.5 + 0.2 0.60 + 0.15 0.50 + 0.2 0.5 + 0.2 RMF50 (2010) 5.0 + 0.2 2.5 + 0.2 0.60 + 0.1 0.60 + 0.2 0.6 + 0.2 RMF1W (2512) 6.3 + 0.2 3.1 + 0.2 0.65 + 0.1 0.60 + 0.2 0.6 + 0.2 RATINGS Power Rating Type RMF04 (0402) RMF06 (0603) RMF10 (0805) RMF12 (1206) RMF25 (1210) RMF50 (2010) RMF1W (2512) 0.0625W 0.1W 0.125W 0.25W 0.33W 0.5W 1.0W 60 Second Fusing Power Max Max Working Overload 0.2 ~ 0.47 W 0.5 ~ 1W 1.1 ~ 20W 22 ~ 100W 110 ~ 470 W Voltage Voltage 50V 50V 150V 200V 200V 200V 200V 100V 100V 300V 400V 400V 400V 400V ---2.5W 3W 3.75W 4.5W 5.5W 6.5W 2.4W 2.4W 2.6W 2.88W 4.1W 5W 6W 2.2W 2.2W 2.4W 2.5W 3.5W 4W 5W 2W 2W 2.1W 2W 3.2W 3.5W 4.5W 1.8W 1.8W 2W 1.75W 3W 3.2W 4W • Standard Resistance Range is 0.2W thru 470W on EIA Standard Value Table E-24 • Temperature Coefficient + 400 ppm/°C • Standard Resistance Tolerance +5% DERATING CURVE Operating Temp. Range -55°C ~ +155° 70°C Rated Load (%) 100 155°C 80 60 40 20 0 -55 -30 0 20 40 60 80 100 120 140 160 180 Ambient Temperature (°C) PART NUMBER EXAMPLE RMF 50 R - 4R7 - J RFE International • Tel:(949) 833-1988 • Fax:(949) 833-1788 • E-Mail [email protected] C2BB06 REV 2009.2.23