Glaze high power ceramic tube wirewound resistor BHR

Products

Glaze high power ceramic tube wirewound resistor BHR

Features

1.Surface glazed, won’t be easily polluted or eroded by chemistry gas, high insulating capacity, can resist humidity and heat well, can be used in the atrocious environment.

2.Good overload and heat durability capacity, the useful time is longer than the others.

3.  Resistance tolerance: ±5%, ±10%.

Test Item

Test Condition

Performance

Temperature coefficient

Test the resistance value at normal temperature and normal temperature added 100°C,calculate per °C resistance value change rate。

±300ppm/°C

Short time overload

According 10 times rated power to account the voltage or max. overload voltage(get the lower) for 5 seconds.

R≤±(2%R0+0.05Ω)

Resistance to solderling heat 

Immerge into the350±10°C tin stove for 2~3seconds.

R≤±(1%R0+0.05Ω)

Solderability

Immerge into the 235±5°C tin stove for 2~3seconds.

The soldering area is over 95%

Temperature cycling 

At -55°C for 30min,then at +25°C for 10-15min,then at +275°C for 30min,then at +25°C for 10-15min,total 5cycles.

R≤±(1%R0+0.05Ω)

Load life in humidity

Overload rated voltage or Max. working voltage(get the lower )for 1000 hours(1.5hours on and half hour off)at the 40±2°C and 90~95% relative humidity.

R≤±(5%R0+0.05Ω)

Load life in heat 

Overload rated voltage or Max. working voltage(get the lower )for 1000 hours(1.5hours on and half hour off)at the 70±2°C.

R≤±(5%R0+0.05Ω)

Nonflammability

Respectively load AC voltage by 5,10,16 times rated power for 5 minutes.

No visible flame

Part No.

Power

Resistance Range 

 Dimensions (mm) 

Fixed Type

Adjustable
Type

L±2

D±2

d±1

H±2

h±2

L1

+2
-1

K±2

b±2

t±1

d1±0.5

c±1.5

BHR08B

8W

5R1-3K3

  --

35

14

5.5

--

28.5

 --

--

3.5

4.5

6

2

2.5

8.5

BHR10B

10W

5R1-10K

5R1-200R

41

31

20

6

BHR16B

16W

5R1-15K

5R1-220R

45

17

8

34

31

23

BHR16B

20W

5R1-20K

5R1-430R

51

30

BHR25B

25W

10R-24K

10R-510R

51

21

12

39

35

BHR30B

30W

10R-30K

10R-1K

71

44

BHR40B

40W

20R-51K

20R-1K2

87

57

BHR50B

50W

20R-51K

20R-1K5

91

29

20

47

43

60

7

4.5

BHR75B

75W

24R-56K

24R-2K

140

110

BHR100

100W

24R-62K

24R-2K7

170

140

BHR150

150W

20R-91K

20R-4K3

215

185

BHR200

200W

4R7-12K

5R1-3K

215

38

25

60.5

58

160

7

8

9

4

11

BHR250

250W

266

30

16

50

50

210

BHR300

300W

36

20

58.5

58

8

BHR400

400W

5R1-10K

6R2-3K

250

54

30

76.5

76

180

10

16

8

17

BHR500

500W

300

230

Note：We can according customer’s requirements to customize the specification and dimension ,also can product multiple resistance value of one ceramic tube or cancel the fixed plank .