●特點(diǎn)Features：1、耐熱性好、溫度系數(shù)小、噪聲低、負(fù)荷功率大、不燃性；Good heat-durability, low temperature coefficient, low noise, highloadpower,monflammability;2、使用環(huán)境溫度：-55℃~ 275℃ Operating ambienttemperature:-55℃~ 275℃3、本體表面涂漆顏色為灰白灰，精度色環(huán)后增加綠色環(huán)表示； Theresistor coats gray white and indicate a green ring at the back of theprecision color ring4、阻值誤差在：±0.1%、±0.25%、±0.5%、±1%●額定功率遞減圖Rated Power Derating Curve： 項(xiàng)目Item性能要求 Performance requirement依據(jù)標(biāo)準(zhǔn) Standard溫度系數(shù)Temperature coefficient-300ppm/℃≤α≤ 300ppm/℃JIS5202-5.2短時(shí)間過(guò)負(fù)荷Short time overloadΔR≤±（2%R0 0.05Ω）JIS5202-5.5耐焊接熱Resistance to soldering heatΔR≤±（1%R0 0.05Ω）JIS5202-6.4可焊性Solderability焊錫面積覆蓋95%以上The area of soldering is over 95%JIS5202-6.5耐濕負(fù)荷壽命Load life in humidityΔR≤±（5%R0 0.05Ω）JIS5202-7.9耐溫負(fù)荷壽命Load life in heatΔR≤±（5%R0 0.05Ω）JIS5202-7.10不燃性Nonflammability不可有明顯火焰No visible flameSj3272-4.2