Silicon Coated Wire Wound Resistors

We are one of the leading manufactures of a wide range of Silicon coated Wire Wound Resistors – SRI (5W to 1000W) & Industrial and Professional Grade Available As Per JSS 50402 & IS 8909 (PART III)- 1978. It has low operating temperatures. These are manufactured by using quality raw material in our well established manufacturing unit by our well experienced staff members.

Features :

• Spot Welded Joints For Reliability
• Low Temperature Coefficient
• Exceptional Stability And Performance
• Low Surface Temperature
• Industrial And Professional Grade Available
• Non-Inductive Type Available
• Fixed Taps And Adjustable Tags Available
• Custom Designed Resistor Assemblies Are Available On Request
• Brackets Available For Horizontal As Well As Vertical Mounting.
• Flame Proof Silicon Coating Available.
• Professional Grade Available As Per JSS 50402 & IS 8909 (PART III)-1978

Specifications :

• Ohmic Range: 0.1Ω to 300KΩ (Std. Resistances from E-24 Series. Other Resistances available on request)
• Tolerance: Standard – 5%. (1%, 2% Available On Request)
• Power Ratings: 5W To 1000W
• Temperature Coefficient: Low Value – ±50ppm 0.1Ω to 9.1Ω; Middle Value – ±50ppm 10Ω to 910Ω; High Value – ±150ppm 1K and above.

Other Details :

• Surface Temperature: 300º C max at 40ºC
• Derate at Zero: At 300º C
• Overload: 10 times the wattage applied for 5 seconds.
• Operating Temperature: -55º C to 200º C
• Dielectric Voltage: Based on indicated creepage distance (k in table) from terminals to mounting bracket. 5mm: 1000V; 6mm: 1200V (higher on request).

Materials Used :

• Core: Ceramic Core
• Terminals: Brass Terminals (SS Terminals And Brass Screw Nut Terminal On Request)
• Wire: Cu-Ni Or Ni-Cr Alloy
• Coating: Silicon Varnish with heat conductive fillers (Flame Proof Silicone varnish on request).