PR254 Series 

THICK FILM POWER RESISTORS PR254

Features pdf-icon_web

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 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


 

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