SURFACE MOUNT RESISTORS CERAMIC ENCASED TYPE TM HCAS Flame Proof High Temperature Ceramic Housing SERIES Inorganic Fire Retardant Encapsulant POWER TYPE Ceramic Encased Wire Wound Resistors Surface Mount - Fire Retardant Terminals Suitable For Re-Flow Soldering PHYSICAL CONFIGURATION L1 W H H T T L W1 SIDE VIEW PROFILE DIMENSIONS (mm) RESISTANCE TYPICAL SIZE POWER HTR L1 W1 WT PER RANGE H W T RATING L TYPE 70C (+0.8) (+0.5) (+0.3) (+0.5) (+0.3) (+0.25) min max PC (gms) C2S 2W 11.0 10.0 5.0 7.0 5.5 2.5 R10 2K0 1.0 4527 C3S 3W 17.0 16.0 7.5 7.0 5.5 2.5 R10 5K6 2.0 6927 IMPORTANT MOUNTING / ASSEMBLY DATA For the guidance of the design engineer, our applications laboratory has given the recommended pad size and geometry which is shown below : C A B DIMENSIONS (mm) HTR TYPE A B C C2S 3.94 5.84 5.21 C3S 3.94 5.97 11.94 HCAs SURFACE MOUNT RESISTORS CERAMIC ENCASED TYPE TM ELECTRICAL AND ENVIRONMENTAL CHARACTERISTICS / DATA Test Performance Requirements Resistance tolerance +10% [K]; +5% [J]; +3% [H]; +2% [G] +1% [F] Temperature rise in C Ambient operating temperature range -55C to +155C full power at 70C Insulation resistance >1000 Mega Ohm Thermal shock Max DR +[0.5% + R05] Short time overload Max DR +[2% + R05] Dielectric withstanding voltage Max DR +[2% + R05] Load life Max DR +[5.0% + R05] Temperature co-efficient of resistance +100 ppm/ C [>10R] +80 ppm/ C [<10R] +450 ppm/ C [<1R0] Flame test Specification laid down by UL have been met satisfactorily TEMPERATURE RISE CURVE 200 150 C3S C2S 100 50 0 0.5 1.0 1.5 2.0 2.5 3.0 Power in watts DERATING CURVE 70C Rated Power [%] 120 100 80 60 40 20 0 C3S C2S 40 80 120 160 200 240 275 Ambient Temperature [C] Note : Due to recent technological advances, the ceramic cases used may be steatite ceramic or corderite ceramic or high alumina ceramic depending on the nature of the application. Hence the ceramic cases may be off-white or variations of brown and variations of grey; colours which are inherent to these ceramic materials. ORDERING INFORMATION HCAS C2S R10 H TOLERANCE RESISTANCE VALUE HTR TYPE SERIES