RCEC 400
www.vishay.com Vishay MCB
Revision: 18-Sep-14 1Document Number: 32507
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
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
Note
(1) On request.
STANDARD ELECTRICAL SPECIFICATIONS
MODEL VALUE RESISTANCE RANGE
MAX. RATED POWER P75 °C
W
TOLERANCE
± %
TEMPERATURE
COEFFICIENT
± ppm/°C
E-SERIES
OHMIC
VALUES
RCEC 400 Single 1.0 to 1M 400 10, 5 (1) 150 (typical) E 12
Double 1.5 to 1M 2 x 180 10, 5 (1) 150 (typical) E 12
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 > 42 mm
Clearance distance > 12 mm > 10 mm
CTI index > 600
Partial discharge < 20 pC at 5000 Veff
Inductance < 40 nH
Insulation resistance 105 M at 500 VDC
Weight (max.) 75 g
RCEC 400
www.vishay.com Vishay MCB
Revision: 18-Sep-14 2Document Number: 32507
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
Note
(1) The higher of either value
ENERGY ABSORPTION
Single Value
Repetitive operation: 2 J/t = 50 μs
Other t values: consult us
Double Value
Repetitive operation: 2 J/t = 50 μs
Other t values: consult us
DIMENSIONS in millimeters
PERFORMANCES
TESTS CONDITIONS REQUIREMENTS TYPICAL VALUES
Momentary overload Single value 800 W / 10 s 2 % 0.2 %
Double value 2 x 360 W / 10 s
Humidity (steady state) 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 %
Terminals strength 130 Ncm / 100 N 1 % or 0.05 (1) 0.1 %
Endurance 2000 cycles Pn 30 min / 30 min 5 % 0.2 %
Ø 4.2 ± 0.1
23
57
66
19.7
40
21
RCEC 400
www.vishay.com Vishay MCB
Revision: 18-Sep-14 3Document Number: 32507
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
DISSIPATION
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
Intermittent Overload (Exceptional Operation)
ASSEMBLY
Maximum tightening torque:
150 Ncm, mechanical mounting
130 Ncm, electrical mounting
10
100
1000
10000
0
10
20
30
40
50
60
70
80
0 102030405060708090100
Axis Title
1st line
2nd line
1st line
Δθ (°C)
K (%)
Single value: P = K x 150
Double value: P = K x 400
Δθ = f (P)
10
100
1000
10000
0
25
50
75
100
050100150
Axis Title
1st line
2nd line
Axis Title
K (%)
θ (°C)
Single value: P = K x 400
Double value: P = K x 180
10
100
1000
10000
0
1
2
3
4
1101001000
Axis Title
1st line
2nd line
1st line
K.P
t (s)
57 ± 0.2
M4 min. depth 5
Thermal compound
Resistance ≤ 0.05 °C/W / 0.025 mm
RCEC 400
www.vishay.com Vishay MCB
Revision: 18-Sep-14 4Document Number: 32507
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
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 μm
• 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 %)
Legal Disclaimer Notice
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Revision: 02-Oct-12 1Document Number: 91000
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