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%.

Specifications 规格

Part NO.
RX
（品名）

Dimensions（规格）

Resistance range
(阻值范围)

W± 1

D± 1

H± 1.5

L± 1

P± 1

d± 0.05

KN

MO

2W

11

7

20.5

4

4

0.8

0.1~270

271~10K

3W

12

8

25

4

4

0.8

0.1~1K

1K1~50K

5W

13

10

25.5

4

4

0.8

0.1~1K

1K1~50K

7W

13

10

39

4

4

0.8

0.1~1K

1K1~47K

10W

13

10

51

4

4

0.8

0.1~1K

1K1~47K

Power rated
额定功率
Item项目

2W

3W

5W

7W

10W

Max. working voltage
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

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分钟。

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 1000 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)

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，请联系我们。