RAF
HERMETICALLY SEALED ALUMINIUM HEAT SINK CASE RESISTOR
FROM 0.7 TO 1.1 KW
DATASHEET REV 0510
MAIN FEATURES
Description
RAF is manufactured into an heat sink case and it is hermetically sealed by cement and aluminium seals
Market
Industrial Automation, Energy Conversion
Applications
Dynamic braking, Charge Discharge Capacitors
Mechanical characteristics
Protection Degree IP54; helix wire wound into ceramic support filled with fused alumina
Special version
Thermal switch, Customized cable
Active materials
Available: CuNi44, Nickel-Chrome Alloys
Notes
Suitable for forced cooling
Overload conditions and power
Parameter
Rated power
Power 250°C
Min resistance
Max resistance
Limit voltage
Surface resistor temp.
Resistance tolerance
Please refer to catalogue DBR Technical notes
Condition
Ta=25°C
Ta=25°C
Ta=25°C
Ta=25°C
Ta=25°C
Ta=25°C
Temp. Coefficient Resistance
Dielectric strenght
Insulation resistance
Thermal time constant
Max Overload
50Hz; 60"
1.000 VDC
ID
Pmax
Pnom
Rmin
Rmax
Vlim
Tnom
Unit
W
W
Ω
Ω
V
°C
%
Value
see table
see table
see table
see table
1.500
see graph
±5
TCR
10-6/°C
20÷240
Viso
Riso
t
P
Vrms
MΩ
sec
kW
3.000
> 1.000
1.000
see graph
ELECTRICAL CHARACTERISTICS
ID
Unit
RAF 700
RAF 900
RAF 1100
Pmax
W
700
900
1.100
Pnom
W
325
375
415
Rmin
Ω
1,00
1,50
1,50
Rmax
Ω
500
1k
1k
Surface Temperature Characteristics
RAF700
450
RAF900
RAF1100
400
350
Temperature [°C]
300
250
200
150
100
50
0
0
200
400
600
800
1000
1200
Power [W]
FAIRFILD SRL - tel +39 02 48407171 fax +39 02 48407157 info@fairfild.com www.fairifld.com - Page 1 of 2
RAF
HERMETICALLY SEALED ALUMINIUM HEAT SINK CASE RESISTOR
FROM 0.7 TO 1.1 KW
DATASHEET REV 0510
Absorbable adiabatic energy graph
MECHANICAL DATA
Dimensions [mm]
L
Weight [gr]
RAF 700
200
1.700
RAF 900
RAF 1100
**
260
320
2.200
2.700
Slot for screw M5
DRAWING
FAIRFILD SRL - tel +39 02 48407171 fax +39 02 48407157 info@fairfild.com www.fairifld.com - Page 2 of 2