供应KNP线绕不燃性涂漆电阻成型
价格:电议
地区:广东 深圳市
电 话:86 0755 28158218
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Products
产品

Nonflammable Wirewound Painting Resistors (KNP/NKNP)
线绕不燃性涂装电阻器(KNP/NKNP)

 

 

Features
特点

  1. Good heat durability, low temperature coefficient, low noise, high load and power, nonflammability. 耐热性好,低温度系数,低噪音,负荷功率大,不燃性。
  2. Can be fusible during the stated time for protecting the circuit once working at the required overload voltage. 施加过负荷电压时,在规定的时间内熔断,对电路起保护作用。
  3. Operating ambient temperature 使用环境温度 :-55°C~+275°C
  4. The surface is nonflammable, the 1/4W~6W coating is gray white and indicate the resistance value by color ring, the 7W or over will indicate the resistance value by lettering and coating is green. 表面涂燃性面漆, 1/4W~6W用色环标识阻值,涂漆颜色为灰白色,7W以上用印字标识阻值,涂漆颜色为绿色。
  5. Resistance tolerance 阻值误差: ±1%,±2%,±5%,±10%.

Dimensions 尺寸规格/KN  B

Power
功率

Dimension(mm) 尺寸

Resistance range
阻值范围

Dielectric
voltage
耐电压

D±0.5

L±1

C±1

d±0.05

KN

NKN

1/2W

3.5

9

25

0.65

0.1-150

0.05-10

300V

1W

4.5

10.5

30

0.78

0.1-250

0.05-10

300V

2W

5

15

30

0.78

0.1-300

0.05-15

350V

3W

6

17.5

38

0.78

0.1-1K

0.05-22

400V

5W

8

24

30

0.78

0.1-1.5K

0.05-33

500V

6W

8

24

30

0.78

0.1-2K

0.05-47

500V

7W

8

33

30

0.78

0.1-3K

0.05-47

500V

8W

8

39

30

0.78

0.1-3.3K

0.05-47

500V

10W

8

43

30

0.78

0.1-3.6K

0.05-47

500V

KN  Z

Power
功率

Dimension(mm) 尺寸

Resistance range(Ω)
阻值范围

Dielectric
voltage
耐电压

L±0.5

D±0.5

W±1

H±1

a±0.05

b±0.1

NKN

5W

25

9

14

23

4.5

3

0.1-1.5k

500V

6W

25

9

14

23

4.5

3

0.1-2k

500V

7W

33

9

22

23

4.5

3

0.1-3k

500V

8W

38

9

27

23

4.5

3

0.1-3.3k

500V

10W

43

9

32

23

4.5

3

0.1-3.6k

500V

Note: We can accord customer’s requirements to customize the other fusing characteristics resistors.
备注:我们可以根据客户的要求协商制作其他熔断特性的电阻。

Test Item
测试项目

Test Condition
测试条件

Performance
性能

Temperature Coefficient
温度系数

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。

 

±300ppm/°C

Short Time overload
短时间过负荷

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负荷电压(取较小者)5秒。

 

ΔR≤±(2%R0+0.05Ω)

Pulse overload
断续过负荷

At 4×rated voltage or Max. pulse overload voltage(get the lower)cycle 10000±200times(1second on,25 seconds off).4倍额定电压或负荷断续电压(取较小者)测试1秒,停25秒,循环10000±200次。

 

ΔR≤±(1%R0+0.05Ω)

Resistance to soldering Heat 耐焊接热

Immerge into the 350±10°C tin stove for 2~3seconds.
在350±10°C锡炉中浸入2~3秒。

 

ΔR≤±1%R0

Solderability
可焊性

Immerge into the 245±3°C tin stove for 2~3seconds.
在245±3°C锡炉中浸入2~3秒。

The soldering area is over 95%

 

Temperature cycling
温度循环

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。

 

ΔR≤±(1%R0+0.05Ω)

 

Load life in humidity
耐湿负荷寿命

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,施加额定电压或工作电压(取较小者)共1000小时(通电0.5小时,断电0.5小时)

 

ΔR≤±(5%R0+0.05Ω)

 

Load life in heat
耐温负荷寿命

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,施加额定电压或工作电压(取较小者)共1000小时(通电0.5小时,断电0.5小时)

 

ΔR≤±(5%R0+0.05Ω)