NKN 40 ohm wirewound ceramic resistor

Wirewound Noninductive Resistors(NKN)

Features:

1,Good heat-durability,low temperature coefficient, low noise, high overload power.

2, Operating ambient temperature:-55 to +275.

3,Surface is nonflammable,the 1/4-6W coating is gray white and indicate the resistance value by color ring, indicate a green ring at the behind of the precision color ring, the 7W or over will indicate the resistance value by lettering and coating is green.

4,Resistance tolerance: ±1%, ±2%,±5%,±10%.

Performance Test:

Test Item   Test Condition   Performance

Temperature coefficient      ±300ppm/

Short time overload          R≤±(2%R₀+0.05R)

Pulse overload               R≤±(1%R₀+0.05R)

Resistance to soldering heat R≤±(1% R_0+0.05R)

Solerability              The soldering area is over 95%

Temperature cycling          R≤±(1% R₀+0.05R)

Load life in humidity        R≤±(5% R₀+0.05R)

Load life in heat            R≤±(5% R₀+0.05R)

Nonflammability               No visible flame