Features
特点

1. Good overload and heat durability capacity, the use life is longer than the others.
2. 过负荷能力强，热稳定性好，使用寿命长。
3. The resistors surface is coated in green. 电阻表面涂漆为绿色
4. Operating ambient temperature 操作环境温度 :-55°C ~ +275°C.
5. Resistance tolerance 阻值精度 : ±5%,±10%.

Part
NO.
料号

Power
功率

L1±2

L2±3

L3±3

L4±3

H1±1

H2±2

S±0.5

F±0.5

W±1

T±0.5

Resistance
Range
阻值范围

HPR25B

25W

40

60

75

100

20

50

5.0

3.5

13.0

5.0

0R22~4K7

HPR50B

50W

82

100

114

140

30

58

6.0

5.0

14.0

6.0

0R22~10K

HPR100

100W

132

150

174

200

30

58

6.0

5.0

14.0

6.0

0R22~15K

HPR150

150W

162

180

194

220

30

58

6.0

5.0

14.0

6.0

0R33~18K

HPR200

200W

207

225

240

265

30

58

6.0

5.0

14.0

6.0

0R33~22K

HPR250

250W

292

310

324

350

30

58

6.0

5.0

14.0

6.0

0R36~24K

HPR300

300W

258

270

285

328

41

85

7.8

6.0

23.0

6.0

0R33~27K

HPR400

400W

322

344

360

406

41

85

7.8

6.0

23.0

6.0

0R33~30K

HPR500

500W

322

344

355

406

51

95

7.8

6.0

26.0

8.5

0R33~33K

HPRA00

1000W

290

315

325

375

71

110

10.0

8.0

32.0

8.5

0R33~36K

HPRA50

1500W

405

420

435

505

71

110

10.0

8.0

32.0

8.5

0R33~39K

HPRB00

2000W

495

525

540

610

71

110

10.0

8.0

32.0

8.5

0R33~43K

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。

±350ppm/°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。

R≤±(2%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。

R≤±(1% R0+0.05Ω)

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%
焊锡面积达95%以上

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。

R≤±(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）

R≤±(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）

R≤±(5% R0+0.05Ω)

Nonflammability
难燃性

Respectively load AC voltage by5,10,16times rated power for 5 minutes.  分别按5、10、16倍功率加交流负荷5分钟。

No visible flame
不可有明显火焰

Note: We can accord to customer’s requirements to customize the specification and dimension, and produce multiple resistance value of one ceramic tube or cancel the fixed plank.
备注：我们可以根据客户要求来定制规格和尺寸，同事也可以制作一管多个阻值，也可以按照客户要求取消固定支架。