Welwyn Resistor W22

W22 series are impermeable lead-free enamel wirewound resistors
Overload characteristics, especially suitable for protection circuits
Highly stable and reliable
High power consumption ensures size
Small high power resistor series for harsh environments
Their high stability and reliability make them especially suitable for protecting circuits
The resistance wire element is wound on a high-purity ceramic substrate and uses an all-welded cap and lead construction to provide considerable strength and damage resistance
The enamel protective coating is resistant to all normal printed circuit board cleaning solvents
Application Notes. The distance from the bending point of the outlet end to the shell should not be less than 1.5mm
A minimum bend radius of 1mm is recommended
To achieve full load rated power dissipation, the termination should not be less than 4mm from the body after soldering
When cool, enamel has excellent insulation resistance; but as the temperature rises, the resistivity decreases
Therefore, if a resistor is operating at or near maximum temperature, it cannot be classified as insulation resistance and should not come into contact with any conductive material.