MODELS PR250 - PR250T THICK FILM POWER RESISTORS

FEATURES

  • Very good ratio Power/Volume
  • Easy mounting and wiring with significant cost advantages
  • Non inductive performance for high frequency applications
  • One model for power applications from 100W to 500W.
  • Suited to ULV94-VO application.

SPECIFICATION

Power rating: 250W (heatsink at 100°C)
Resistance range: From IRO to IMOhm series E6
Tolerance: Standard ±10% Up to
1% on request
Temperature coefficient: 100 ppm/°C
Max work voltage: 5,000 Vac
Work temp range: -55°C to +155°C
Dielectric strength: 7,000 Vac (12,000 Vac PR250T)
Insulation resistance: > 105 MOhm at 500V
Creep distance: 40 mm (60 mm PR250T)
Air gap distance: 14 mm(27 mm PR250T)
Partial discharge: <10pC/5,000 Vac
Self inductance: 80nH
Parallel capacitance: 40pF
Capacitance/Mass: <120 pF
Overload (not trimmed): 4 Pn x 10 sec.
Thermal resistance: 0.15°C/W
Heatsink flatness: 0.05 mm Max
Heatsink surface finish: 6.3 µm Max
Thermal grease: Required
Max torque for contact: 2 Nm (static)
Max torque for mounting: 2Nm (static)
Weight: 110 gr. (140 gr PR250T)