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无感/水泥电阻
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立式水泥电阻

产品名称: 立式水泥电阻

产品分类:无感/水泥电阻

产品介绍:
耐热性好、温度系数小、噪声低、负荷功率大、绝缘性高
使用环境温度 :-55℃~+275℃
阻值误差: ±1%,±2%,±5%,±10%.

产品详细介绍

 

Products
产品
Cement type resistors (SQM)
水泥型电阻器 SQM型
 
Features
特点
1.Good heat-durability, low temperature coefficient,
 low noise,high load power, high insulating capacity.
耐热性好、温度系数小、噪声低、负荷功率大、绝缘性高。
2.Operating ambient temperature 使用环境温度 :-55℃~+275℃
3.Resistance tolerance阻值误差: ±1%,±2%,±5%,±10%.
Power rated
额定功率
Item项目
2W
3W
5W
7W
10W
Max. working voltage
最大工作电压
150V
350V
350V
500V
750V
Dielectric withstanding voltage
耐电压
1000V
(AC)
1000V
(AC)
1000V
(AC)
1000V
(AC)
1000V
(AC)
Resistance tolerance
阻值精度
J ± 5%
J ± 5%
J ± 5%
J ± 5%
J ± 5%
Cement Type Resistor (wire wound)
水泥电阻器(绕线)
Characteristics
特性
Specifications 规格
Test Method 测试方法
DC Resistance
直流阻抗值
JIS-C-5202 5.1
J ± 5%
AT 25℃ 温度为25°C时
Dielectric withstanding voltage
耐电压
JIS-C-5202 5.7
No evidence of flashover
 mechanical amage, arcing
or insulation breakdown.
涂装不可烧毁,绝缘不可破坏
Resistance shall be clamped with a
conductive material which conforms
to resistors surface so that 90o
of the outer periphery is contacted
a potential of 1000V AC shall be
applied for 60 seconds.
电阻两端导线置于金属V型槽上依电性表之
电压规格印加60秒。
Insulation Resistance
绝缘阻抗
JIS-C-5202 5.6
1000MΩ     MIN
Withstanding test and shall be measured
at DC 500V. Resistor shall be prepared
 AC same method
of dielectric.
以DC500V测试待测体于V形槽之上导线及其表面涂装印加60秒。
Thermal Shock
热冲击
ΔR≤±(2%R0+0.1Ω)
After application of rated power for 30
 minutes,30 minutes exposure to -30±5℃ ambient temperature.额定电压印加
30分钟后,于8到12秒以内置于30°C中30钟。
Humidity
耐湿性
JIS-C-5202 7.5
ΔR≤±(2%R0+0.1Ω)
Temperature resistance change after 1000
hours exposure in a humidity test chamber
controlled at 40±2℃ and 90~95% relative
humidity.在温度为40±2°C,相对湿度为90~95%时置于恒温箱中不加电压,连续放置
1000小时。
Cement Typr Resistor (metal oxide film)
水泥电阻特性(金属氧化皮膜)
Short time overload
短时间过负荷
ΔR≤±(2%R0+0.05Ω)
Temperature resistance change after the
application of a potential of 2.5 times
RCVW for 5 seconds.
2.5
倍额定电压测试5秒。
Load Life
室温寿命
JIS-C-5202 7.10
ΔR≤±(5%R0+0.1Ω)
Permanent resistance change after 1000
hours operating at RCWV, with duty cycle
 of 1.5 hours on and 0.5 hours off at 25℃±2℃.在温度为25℃±2℃下以额定电压测试1000小时,其中以通电1.5小时,断电0.5小时进行。
Load Life in Humidity
湿度寿命
JIS-C-5202 7.9
ΔR≤±(5%R0+0.1Ω)
Temperature resistance change after 100
 hours(1.5hours on and 0.5 hours off) at RCVW
 in a humidity chamber controlled at 40
±2℃ and 90~95% relative humidity.
在温度为25℃±2℃,相对湿度为90~95%时下以额定电压测试1000小时,其中以通电1.5小时,断电0.5小时进行。
Solderability
JIS-C-5202 6.5
95% coverage MIN
Test temperature of solder:230±5℃
锡炉温度:230±5℃
Dwell time in solder:3±0.5 seconds
浸炉时间:3±0.5 seconds
Humidity
耐湿性
JIS-C-5202 7.5
ΔR≤±(5%R0+0.1Ω)
Temperature resistance change after 1000
hours exposure in a humidity test chamber
 controlled at 40±2℃ and 90~95% relative
humidity. 在温度为40±2°C,相对湿度为90~95%时置于恒温箱中不加电压,连续放置1000小时。
Resistance to Soldering Heat
耐热性
ΔR≤±(1%R0+0.05Ω)

Temperature
温度
Dip   Time浸入时间
350°C±10°C
3.0±0.5 seconds
260°C±5°C
10±1seconds
Immerge into the 350±10°C tin stove by3.2~4.8
mm length as the follow form. 浸入锡炉中3.2mm~4.8mm,如下表规定所示:
 
Nonflammability
不燃性
Nonflammable 不可燃烧
Load 5 min according to 5times, 10 times,
16 times rated power and A.C. respectively.
分别施以5,10,16倍额定功率加交流负荷5分钟。
Notes 备注 
More details, please feel free to contact us.
 更多细节,请联系AG8:0755-88822893 

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