RTOP Vishay Sfernice Power Resistor for Mounting onto a Heatsink Thick Film Technology FEATURES 1 % tolerance available High power rating = 200 W Wide ohmic value range = 0.046 to 1 M Non inductive Easy mounting Low thermal radiation of the case Standard Isotop case (SOT 227 B) This series of thick film power resistors include modules which can incorporate up to 2 different resistor values in the same SOT 227B package. Two types of terminations are available along with a 4 terminal device for measurement applications in the case of the single resistor version. This product range benefits from Vishay Sfernices experience in thick film power resistor technology i.e. high power: volume ratio, low tolerance or individual resistors and excellent overload capabilities (due to the trimming technique). DIMENSIONS in millimeters RTOP V Connections 12.6 10 4 16 38 30 12.6 4.2 25 Tolerances unless otherwise specified: 0.3 mm MECHANICAL SPECIFICATIONS ELECTRICAL SPECIFICATIONS Mechanical Protection Insulated case Resistance Range 0.046 to 1 M Substrate Alumina on insulated base Resistive Element Cermet Standard Tolerance 1 % to 10 % End Connections V connections: screw M4 x 6 Tightening Torque Connections 1 Nm Tightening Torque Heatsink 2 Nm 50 W to 200 W Power Rating at + 25 C Weight 30 g max. Temperature Coefficient 300 ppm/C (R < 1) Standard (- 55 C to + 125 C) 150 ppm/C (R > 1) ENVIRONMENTAL SPECIFICATIONS 6 Temperature Range - 55 C to + 125 C Insulation Resistance > 10 M Climatic Category 55/125/56 www.vishay.com For technical questions, contact: sfer vishay.com Document Number: 50045 1 Revision: 02-Jul-09RTOP Power Resistor for Mounting onto a Heatsink Vishay Sfernice Thick Film Technology PERFORMANCE TESTS CONDITIONS REQUIREMENTS IEC 60115-1 Momentary Overload < (0.25 % + 0.05 ) 2.5 Pn/5 s U < 2 U S L IEC 60115-1 Rapid Temperature Change < (0.25 % + 0.05 ) 5 cycles - 55 C + 125 C IEC 60115-1 Load Life < (0.5 % + 0.05 ) Pn at 25 C 1000 h IEC 60115-1/IEC 60068-2-3 Test Ca Humidity (Steady State) < (0.5 % + 0.05 ) 56 days 95 % R.H./40 C SPECIAL FEATURES MODEL RTOP 200 RTOP 100 DRTOP 100 DRTOP 50 Power Rating at + 25 C Chassis Mounted Resistors 200 W 100 W 100 W 50 W Unmounted Resistors 5 W 5 W 3.5 W 3.5 W Thermal Resistance (Per Resistor) 0.5 C/W 1 C/W 0.5 C/W 1 C/W Limiting Voltage U 1500 V 1500 V 500 V 500 V L (1) Dielectric Strength 2500 V, 1 min 2500 V, 1 min 2500 V, 1 min 2500 V, 1 min Connections/Chassis 10 mA max. 10 mA max. 10 mA max. 10 mA max. (1) Dielectric Strength 2500 V, 1 min 2500 V, 1 min - - Connections/Resistors 10 mA max. 10 mA max. Ohmic Value Range 0.046 to 1 M 0.092 to 1 M Tolerance 1 % to 10 % 1 % to 10 % R2 R R1 Electrical Diagrams R Shunt Version Note (1) MIL STD 202 Method 301 Document Number: 50045 For technical questions, contact: sfer vishay.com www.vishay.com Revision: 02-Jul-09 2