Features 
Very good ratio Power / Volume
Easy mounting and wiring with significant cost advantages.
Non inductive performance for high frequency applications.
One models for power applications up to 500W.
Suited to ULV94-V0 application
Electrical Specifications
– Power rating
250W (heatsink at 100°C)
– Resistance range
From 1R0 to 1MOhm, E12 series
– Tolerance
Standard 10%, up to 1% on request
– Temperature coefficient:
±100 ppm/°C
– Max Work. Voltage:
5000 Vac
– Work Temp. Range
From -55°C to +155°C
-Dielectric Strength
7000 Vac (12000 Vac x PR250T)
– Insulation resistance
> 105 MOhm a 500V
– Creep distance
42 mm (65 mm x PR250T)
– Air gap distance
16 mm (29mm x PR250T)
– Partial discharge
< 10 pC @ 5000 Vac
– Self inductance
80 nH
– Parallel capacitance
40 pF
-Capacitance to heatsink
< 120 pF
– Overload
4 Pn x 10 s
– Thermal resistance:
0.15 °C/W
– Heatsink flatness
0.05 mm Max
– Heatsink surface finishe
6.3μm Max
– Thermal grease
Required
– Max torque for contacts
2 Nm (static)
– Max torque for mounting
2 Nm (static)
– Weight:
100 g (130 gx PR250T)
– Options
– For values R039 <R< 1R0 is available Metal Foil type PR250M
– Cable terminals PR250C / PR250TC
