Cement Type Resistors SQP

Products 

Cement type resistors SQP 

Features

1.Good heat-durability, low temperature coefficient, low noise, high load power, high insulating capacity.
2.Operating ambient temperature :-55℃~+275℃ 
3.Resistance tolerance: ±1%,±2%,±5%,±10%.

Specifications

Part NO.
RX

Dimensions

Resistance range

W±1

H±1

L±1.5

C±3

D±0.05

KN

MO

2W

7

7

18

30

0.8

0.1~270

271~33K

3W

8

8

22

35

0.8

0.1~1K

1K1~47K

5W

10

9

22

35

0.8

0.1~1K

1K1~68K

7W

10

9

35

35

0.8

0.1~1K

1K1~68K

10W

10

9

48

33

0.8

0.1~1K

1K1~50K

15W

12.5

11.5

48

33

0.8

0.1~1K

1K1~150K

20W~25W

14

13.5

60

33

0.8

0.1~1K

1K1~150K

Power rated

Item

2W

3W

5W

7W

10W

15W

20W~25W

Max working voltage

150V

350V

350V

500V

750V

1000V

100V

Dielectric withstanding voltage

1000V
(AC)

1000V
(AC)

1000V
(AC)

1000V
(AC)

1000V
(AC)

1000V
(AC)

1000V
(AC)

Resistance tolerance

J±5%

J±5%

J±5%

J±5%

J±5%

J±5%

J±5%

Cement Type Resistor (wire wound)

Characteristics

Specifications

Test Method

DC ResistanceJIS-C-5202 5.1

J ± 5%

At 25℃

Dielectric withstanding voltage 
 
JIS-C-5202 5.7

No evidence of flashover mechanical amage, arcing or insulation breakdown.

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.

Insulation Resistance 

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.

Thermal Shock

ΔR≤±(2%R0+0.1Ω)

After application of rated power for 30 minutes, 30 minutes exposure to -30±5℃ ambient temperature.

Humidity

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.

Cement Type Resistor (metal oxide film) 

Short time overload 

ΔR≤±(2%R0+0.05Ω)

Temperature resistance change after the application of a potential of 2.5 times RCVW for 5 seconds.

Load Life 

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℃.

Load Life in Humidity

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.

Solderability
JIS-C-5202 6.5

95% coverage MIN

Test temperature of solder:230±5℃ 
Dwell time in solder:3±0.5 seconds

Humidity

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.

Resistance to Soldering Heat

ΔR≤±(1%R0+0.05Ω)

Immerge into the 350±10°C tin stove by3.2~4.8
mm length as the follow form.

Nonflammability

Nonflammable

Load 5 min according to 5times, 10 times, 16 times rated power and A.C. respectively.

Notes 

More details, please feel free to contact us.