CURRENT SENSE/LOW OHM CERAMIC ENCASED TYPE TM HEAL Fire Proof Ceramic Housing SERIES LOW OHM/LOW INDUCTANCE Alloy Electrical Resistance Ribbon Current Sense Applications Quartz Silica Powder Tinned Copper Terminals All Welded Construction ! 2.5 W to 9 W ! R 0025 to R 10 PHYSICAL CONFIGURATION LM d 9+1 6+1 6+1 35 + 3 L 35 + 3 LC 2, LC4, LC 5 & LC7A 6mm, reduced solderability in this area HTR TYPE POWER RATING at 70C LC2 9+1 DIMENSIONS (mm) LC 7, LC 9 RESISTANCE TYPICAL RANGE WT. PER PC (gms) min max L +1.5 LM +1.0 d +0.05 2.5 W 15.0 35.0 0.8 R0025 R047 1.6 LC4 4W 18.0 40.0 0.8 R003 R051 2.0 LC 5 5W 25.0 45.0 0.8 R004 R068 2.3 LC 7 7.5 W 25.0 45.0 0.8 R004 R068 4.8 LC7A 7W 38.0 60.0 0.8 R006 R10 4.9 LC 9 9W 38.0 60.0 0.8 R006 R10 7.3 Resistance values above the maximum range are possible on special request. Resistance values must be checked using 41/2 digit micro-ohm meter with four wire system and insulated clips. The resistance value must be checked at dimension LM as given in the table above. ELECTRICAL AND ENVIRONMENTAL CHARACTERISTICS / DATA Performance Requirements Test Resistance tolerance + 10% [K]; + 5% [J]; + 3%[H]; + 2% [G]; + 1% [F] Rated ambient temperature at 70C full power dissipation Insulation resistance > 1000 M [minimum] Temperature co-efficient +200 ppm/ C to +1200 ppm/ C depending on resistance value and power rating. (measured from -55C to 125C referenced to +25C) Short time overload Max DR + 2% Moisture resistance Max DR + 1% (Average) Load life Max DR + 3% (Average) Ambient operating temperature range -40C to +155C Flame test UL specifications have been met satisfactorily. TYPICAL APPLICATION HEAL Series is an innovative method of providing low inductance resistors in a ceramic body. The resistive element consists of a flat metal band which is welded to copper terminals before encapsulation. These resistors are finding increasing use in industrial applications where pulse rating and ability to absorb high inrush current are required. For the effective utilisation of these resistors, please refer "Applications / Design notes for current sense resistors" ORDERING INFORMATION HEAL LC4 R047 J TOLERANCE RESISTANCE VALUE HTR TYPE SERIES Taping : Types LC2, LC4 & LC5 can be supplied in taped form. Please refer to tape/ammo pack specifications andtape/reel specifications. 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. HEAL CURRENT SENSE/LOW OHM CERAMIC ENCASED TYPE TM