RCEC 400 www.vishay.com Vishay MCB Power Resistors Cooled by Auxiliary Heatsink (Not Supplied) Thick Film Technology FEATURES * System without external radiation * High power / volume ratio * Non-inductive * Screw-on outputs * Possible configuration with 2 or 3 resistors STANDARD ELECTRICAL SPECIFICATIONS MODEL RCEC 400 VALUE RESISTANCE RANGE MAX. RATED POWER P75 C W TOLERANCE % TEMPERATURE COEFFICIENT ppm/C E-SERIES OHMIC VALUES Single 1.0 to 1M 400 10, 5 (1) 150 (typical) E 12 (1) 150 (typical) E 12 Double 1.5 to 1M 2 x 180 10, 5 Note (1) On request. MECHANICAL SPECIFICATIONS UL 94 flame classifications Material in accordance with UL 94 V-0 Resistive element Thick film Substrate Alumina Encapsulation Resin filled in housing TECHNICAL SPECIFICATIONS PARAMETER SINGLE VALUE DOUBLE VALUE Operating temperature range -55 C to +150 C Maximum operating voltage 4000 V Dielectric strength VRMS (50 Hz / 1 min) 6000 V Creepage distance Clearance distance CTI index Partial discharge Inductance Insulation resistance Weight (max.) Revision: 18-Sep-14 > 42 mm > 12 mm > 10 mm > 600 < 20 pC at 5000 Veff < 40 nH 105 M at 500 VDC 75 g Document Number: 32507 1 For technical questions, contact: mcbfixedresistors@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 RCEC 400 www.vishay.com Vishay MCB 21 DIMENSIONS in millimeters 57 23 19.7 40 O 4.2 0.1 66 PERFORMANCES TESTS REQUIREMENTS TYPICAL VALUES 2% 0.2 % 56 days, 40 C, 95 % HR 2 % or 0.05 (1) 0.2 % VRT -55 C to +125 C 5 cycles 2 % or 0.05 (1) 0.2 % Mechanical shock IEC 60115-4 clause 2-3-6 0.5 % or 0.05 (1) 0.25 % Vibration IEC 60115-4 clause 2-3-2 0.5 % or 0.05 (1) 0.25 % 130 Ncm / 100 N 1 % or 0.05 (1) 0.1 % 2000 cycles Pn 30 min / 30 min 5% 0.2 % Momentary overload CONDITIONS Single value 800 W / 10 s Double value 2 x 360 W / 10 s Humidity (steady state) Terminals strength Endurance Note (1) The higher of either value ENERGY ABSORPTION Single Value Double Value Repetitive operation: 2 J/t = 50 s Other t values: consult us Repetitive operation: 2 J/t = 50 s Other t values: consult us Revision: 18-Sep-14 Document Number: 32507 2 For technical questions, contact: mcbfixedresistors@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 RCEC 400 www.vishay.com Vishay MCB DISSIPATION Axis Title Axis Title 80 10000 10000 Single value: P = K x 150 Double value: P = K x 400 70 100 60 40 30 1000 1st line 2nd line Axis Title K (%) 1st line 2nd line 1st line (C) 75 1000 50 50 100 100 20 25 10 Single value: P = K x 400 Double value: P = K x 180 = f (P) 0 0 10 0 10 20 30 40 50 60 70 80 10 0 90 100 50 100 150 K (%) (C) Temperature Rise as a Function of the Power Applied Overall Thermal Resistance 0.1875 C/W (Double Value: 0.2083 C/W) Permanent Applicable Power as a Function of Heatsink Temperature OVERLOAD Axis Title 10000 4 3 1st line 2nd line 1st line K.P 1000 2 100 1 0 1 10 10 1000 100 t (s) Intermittent Overload (Exceptional Operation) ASSEMBLY 57 0.2 M4 min. depth 5 Thermal compound Resistance 0.05 C/W / 0.025 mm Maximum tightening torque: 150 Ncm, mechanical mounting 130 Ncm, electrical mounting Revision: 18-Sep-14 Document Number: 32507 3 For technical questions, contact: mcbfixedresistors@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 RCEC 400 www.vishay.com Vishay MCB COOLING The temperature of the heatsink may be maintained at the specified values with: * Forced air ventilation * Internal circulation of a cooling liquid * Heatsink contact surface: Ra 6.3 m * Evenness defect: 0.05 mm max. * Surface temperature gradient (isotherm): 20 C max. * Thermal compound not supplied (resistance 0.05 C/W / 0.025 mm) The user must select the thermal resistance of the heatsink according to the power applied. ORDERING INFORMATION RCEC 400 10 10 % MODEL TYPE RESISTANCE VALUE (DOUBLE VALUE: 2 x 10 FOR EXAMPLE) TOLERANCE ( 5 % or 10 %) Revision: 18-Sep-14 Document Number: 32507 4 For technical questions, contact: mcbfixedresistors@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. 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