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Products
产品
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Coated High Power Ceramic Tube Resistors
被漆功率瓷管电阻器
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Features
特点
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1. Good overload and heat durability capacity, the use life is longer than the others.
2. 过负荷能力强，热稳定性好，使用寿命长。
3. The resistors surface is coated in green. 电阻表面涂漆为绿色
4. Operating ambient temperature 操作环境温度 :-55°C ~ +275°C.
5. Resistance tolerance 阻值精度 : ±5%,±10%.
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Test Item 测试项目
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Test Condition 测试条件
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Performance性能
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Temperature Coefficient
温度系数
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The resistance value at normal temperature and
normal temperature added 100°C, calculate per °C resistance value change rate.
在常温及常温+100°C时分别测量电阻值并计算每度的阻值变化。
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±350ppm/°C
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Short Time overload
短时间过负荷
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10×rated voltage or Max. overload voltage(get the lower) for 5 seconds.
施加10倍额定功率的电压或最高负荷电压（取较小者）5秒。
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R≤±(2%R0+0.05Ω)
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Resistance to soldering Heat 耐焊接热
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Immerge into the 350±10°C tin stove for 2~3seconds. 在350±10°C锡炉中浸入2~3秒。
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R≤±(1% R0+0.05Ω)
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Solderability
可焊性
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Immerge into the 245±3°C tin stove for 2~3seconds. 在245±3°C锡炉中浸入2~3秒。
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The soldering area is over 95%
焊锡面积达95%以上
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Temperature cycling
温度循环
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At -55°C for 30 min. ,then at+25°C for 10~15°C,then at +125°C for 30 min., then at +25°C for 10~15 min., total 5cycles. 在-55°C时放置30分钟，然后在+25°C时放置10~15分钟，然后再在+275°C时放置30分钟，接着在+25°C时放置10~15分钟，共循环5次。
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R≤±(1% R0+0.05Ω)
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Load life in humidity
耐湿负荷寿命
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Overload rated voltage or Max. working voltage(get the lower) for 1000 hours(1.5hours on and 0.5 hours off) at the 40±2°C and 90~95% relative humidity. 在温度为40±2°C，相对湿度为90~95%的恒温恒湿箱中，施加额定电压或最大工作电压（取较小者）共1000小时（通电0.5小时，断电0.5小时）
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R≤±(5% R0+0.05Ω)
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Load life in heat
耐温负荷寿命
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Overload rated voltage or Max. working voltage(get the lower) for 1000 hours(1.5hours on and 0.5 hours off) at the 70±2°C. 在温度为70±2°C的恒温恒湿箱中，施加额定电压或最大工作电压（取较小者）共1000小时（通电0.5小时，断电0.5小时）
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R≤±(5% R0+0.05Ω)
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Nonflammability
难燃性
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Respectively load AC voltage by5,10,16times rated power
for 5 minutes. 分别按5、10、16倍功率加交流负荷5分钟。
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No visible flame
不可有明显火焰
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Note: We can accord to customer’s requirements to customize the specification and dimension,
and produce multiple resistance value of one ceramic tube or cancel the fixed plank.
备注：我们可以根据客户要求来定制规格和尺寸，同事也可以制作一管多个阻值，也可以按照客户要求取消固定支架。
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