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Power Ceramic Encased Resistors

Product Category : Resistors, Power

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Product Profile of Power Ceramic Encased Resistors

Hi-tech Resistors Pvt. Ltd. manufactures Power Ceramic Encased Resistors. Hi-tech Resistors Pvt. Ltd. is an ISO 9001:2000 certified company. Power Ceramic Encased Resistors finds its applications in industrial applications where pulse rating and ability to absorb high inrush current is required. Another important application is Current Sensing in applications which include switching and linear power supplies.

Power Ceramic Encased Resistors has the following features:

Tinned Copper Terminals

Alloy Electrical Resistance Ribbon

Fire Proof Ceramic Housing

All Welded Construction

Quartz Silica Powder

Superior alternative to replace moulded device of identical size

Negligible inductance

Highly thermal efficient power to size ratio

Any resistance value possible within resistance range given

Product Specification of Power Ceramic Encased Resistors

Insulation Resistance: >1000 M (Min) (MIL STD 202F - Test Method 302)
Power Rating: 0.5 at 40°C (Ambient)
Resistance Range: Min. R004, Max. R055
Resistance Tolerance: ±10% (K); ±5% (J); ±3% (H); ±2% (G); ±1% (F); ±0.5% (D)
Short Time Overload: ΔR ± [0.5% + R0005] - Average<br>ΔR ± [1% + R0005] - For resistance values near maximum range (5 x Rated Power upto 2 watts and 10 x Rated Power 3 watts and above for 5 secs)
Temperature: Actual Temperature on Resistor Body: 70 (Full Power Dissipation / Limiting Voltage)<br>Actual Temperature on Resistor Termination (10 mm from resistor body): 50 (At Full Power Dissipation / Limiting Voltage)
Temperature Co-efficient of Resistance: ± 60 to 400ppm/ °C (Depending on resistance value) (Measured from -55°C to +125°C referenced to +25°C )
Temperature Range: -55°C to +275°C with suitable derating as per derating curve
Type: RL0.5
Typical Weight: 0.5 per PC
Voltage Proof: ΔR ± [0.2% + R05] - No flashover or mechanical damage (based on 1000 V rms for 60 secs)
Damp Heat: ΔR ± [0.5% + R0005] ((Steady State) / Humidity) (40°C at 95% R.H for 250 hours)
Load Life: ΔR ± [1.5% + R0005] Average - 2000 hours duration<br>ΔR ± [0.5% + R0005] Typical - 1000 hours duration (70°C with limiting voltage - 1.5 hours on / 0.5 hours off)
Mechanical Shock: ΔR ± [0.1% + R0005] - Typical (Specified Pulse) (MIL STD 202F - Test Method 213B condition C)
Moisture Resistance: ΔR ± [0.2% + R0005] (MIL STD 202F - Test Method 106E with step 7b eliminated)
Thermal Shock: ΔR ± [0.2% + R0005] - Average (-65°C to +125°C, 5 cycles, 15 mins at each extreme temperature)