W21-390RJI WELWYN Welwyn W21 Series Axial Wirewound Resistor 390Ω ±5% 3W ±200ppm/°C
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| Producent | WELWYN | | Part Number | W21-390RJI (W21390RJI) |
| Specifications | Welwyn W21 Series Axial Wirewound Resistor 390Ω ±5% 3W ±200ppm/°C |
| Unit Price | 0,59 EUR |
| Minimum Order Quantity | 1 |
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| Weight and Dimension | |
| Description | Case StyleConformal Diameter5.6mm Dimensions5.6 Dia. x 12.7mm Length12.7mm Maximum Operating Temperature+200°C Maximum Temperature Coefficient+200ppm/°C Minimum Operating Temperature-55°C Minimum Temperature Coefficient-200ppm/°C Power Rating3W Resistance390Ω SeriesW21 TechnologyWire Wound Temperature Coefficient±200ppm/°C Termination StyleAxial Tolerance±5% Product Details W21 Series 2.5W, Axial W21 Series are Impervious Lead-free Vitreous Enamelled Wire-wound ResistorsOverload characteristics ideal for protection circuitsHigh stability and reliabilityHigh power dissipation for sizeOverload characteristics ideal for protection circuitsHigh stability and reliabilityHigh power dissipation for size Power at 70°C 2.5W Power at 25°C 3W Resistance Tolerance ±5% Temperature Coefficient ±75 ppm/°C Operating Temperature -55°C → +350°C Limiting Element Voltage 100V Body Length 12.7 mm Body Diameter 5.6 mm Lead Length 22.75 mm Lead Diameter 0.8 mm Vitreous Enamel Axia and Radial - 2.5 to 50W A range of high power resistors in small body sizes suitable for use in harsh environments. Their high stability and reliability make them particularly suitable for use in protection circuits.,The resistance wire element is wound onto a high purity ceramic substrate and employs an all welded cap and lead method of construction giving considerable strength and resistance to damage. The vitreous enamel protective coating is resistant to all normal PCB cleaning solvents.Application note. Terminations should not be bent closer than 1.5mm from the body. Recommended minimum bend radius is 1mm. For full rated power dissipation terminations should not be soldered closer than 4mm from the body.When cold, vitreous enamel has excellent insulation resistance; however the specific resistance decreases with increasing temperature. Therefore if the resistor is operating at or near maximum temperature it cannot be classed as insulating and should not be in contact with any conducting materials. |
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