PR254 Series
THICK FILM POWER RESISTORS PR254

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 PR254T)
- Insulation resistance
> 105 MOhm a 500V
- Creep distance
42 mm (65 mm x PR254T)
- Air gap distance
16 mm (29mm x PR254T)
- Partial discharge
< 10 pC @ 5000 Vac
- Self inductance:
80 nH
- Capacità parallela
40 pF
- Parallel capacitance
< 120 pF
- Overload
4 Pn x 10 s
- Thermal resistance:
0.15 °C/W
- Heatsink flatness:
0.05 mm Max
- Heatsink surface finish
6.3μm Max
- Thermal grease
Required
- Max torque for contacts
2 Nm (static)
- Max torque for mounting:
2 Nm (static)
- Weight:
125 g (155 g x PR254T)
- Options
Cable terminals PR254C / PR254TC