FIXED POWER WIREWOUND RESISTORS ALUMINIUM HOUSED
Extruded aluminium housing provides superior heat conduction. Housing deep finned for maximum heat dissipation at natural or forced air convection.
Gold anodized finish for maximum resistance to environmental conditions. Special thermosetting compound with high thermal conductivity.
Winding designed to give maximum core coverage and uniformity for even heat dissipation.
Core centerless ground for maximum winding uniformity. Marking at top surface for easy identification after mounting. Complete welded construction terminal to terminal.
- Ohmic values
Serie E24. For out of range or not standard ohmic values, consult ATE Technical Dept.
Standard 5%. Available on request up to 1%.
- Temperature coefficient
±30 ppm R > 20 Ohm
±50 ppm 1 Ohm < R < 20 Ohm
±100 ppm 0.1 Ohm < R < 1 Ohm
- Dielectric strength
1500 Vac per il tipo RB10
2500 Vac per i tipi RB25 e RB50
3500 Vac per i tipi RB75, RB101, e RB150
4500 Vac per i tipi RB100 E RB250
- Insulation resistance
10000 MOhm minimum
1000 MOhm after moisture test
5s at 5 times rated power
Models of equivalent physical and electrical specifications are also available with non inductive Ayrton-Perry winding
10 lb. pull test; 3 Nm x RB100 and 4 Nm x RB250 max torque
Satisfactory when tested in accordance with method 208 of MIL-STD-202.
The use of high temperature solder is recommended when resistors work near the maximum specified ratings
Ceramic steatite or alumina centerless ground
- Resistive Element
Copper-nickel alloy or nickel-chrome alloy with specific temperature coefficient
- End caps
High temperature thermosetting compound
Aluminium with hard anodic finish
- Standard terminals
Copperweld RB10 to RB150
Stainless steel for RB100 and RB250
ATE RB resistors have and operative temperature range from -55°C to +250°C
Derating is required for reduced chassis area and for high ambient temperature