Boat Type Aluminum Housed Wirewound Resistor

Product

Boat Type Aluminum Housed Wirewound Resistor

Features

1.Aluminum crust surface with good performance in heat radiation, suitable for cooling plate installation, can be used in the atrocious environment 
2.Small size, high power load.
3.High insulating capacity, encapsulation by non-flame inorganic material good performance in vibration. 
4.Multi connection form will be easily to fix 
5.Widely used in Power supply, Transducer, Elevator, Arena audio and high requirement equipment Industry.
6.Resistance tolerance：±1%,±2%,±5%,±10%.

Test Item

Test Condition

Performance

Temperature Coefficient

The resistance value at normal temperature and normal temperature added 100°C, calculate per °C resistance value change rate.

±300ppm/°C

Short Time overload

10×rated voltage or Max. overload       voltage(get the lower) for 5 seconds.

R≤±(2%+0.05Ω)

Resistance to soldering Heat

Immerge into the 350±10°C tin stove for 2~3seconds.

R≤±(1%+0.05Ω)

Solderability

Immerge into the 245±3°C tin stove for 2~3seconds.

The soldering area is over

Temperature cycling

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.

R≤±(1%+0.05Ω)

Load life in humidity

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.

R≤±(5%+0.05Ω)

Load life in heat 

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.

R≤±(5%+0.05Ω)

Terminal strength

Pull :10N

R≤±(2%+0.1Ω)

Vibration

Frequency :10~55Hz. 
Swing:0.75mm.
Test tim:6hours.

R≤±(2%+0.1Ω)

Nonflammability

Respectively load AC voltage by5,10,16times rated power for 5 minutes.

No visible flame

Specifications and Dimensions

Part No.

Power

Resistance Range

 
Dimensions

Max. 
Working 
Voltage

With-
stand 
Voltage

L1±1.5

L2±1.5

L3±1.5

L4±1.5

B±1

H±1

D±0.5

CRX50B

50W

1R-560R

75

90

100

4.5

30

13

4.5

300V

450V

CRX100

100W

1R-1K

104

118

130

6.0

42

21

6.0

400V

600V

CRX150

150W

1R-3K3

150

172

182

6.0

42

21

6.0

500V

750V