WRX Ceramic Core 68R 360R 390 Ohm Temperature Fuse Cement Resistors

Test Item

Test Condition

Performance

Temperature coefficient

Test the resistance value at normal temperature and normal temperature added 100 degrees centigrade, calculate per degree centigrade value change rate

 350ppm

Short time overload

2.5 x rated voltage or Max. overload voltage(get the lower) for 5 second

R ≤ ± (2%R₀+0.05Ω)

Resistance to soldering heat

Immerge into the 350±10 degrees centigrade tin stove for 2-3 seconds

R ≤ ± (1%R₀+0.05Ω)

Solder ability

Immerge into the 245±3 degrees centigrade tin stove for 2-3 seconds

The soldering area is over 95%

Load life in humidity

Overload rated voltage or Max. working voltage(get the lower) for 1000 hours(1.5 hours on and half-hour off) at the 40±2 degrees centigrade 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(1.5 hours on and half-hour off ) at the 70±2 degrees centigrade.

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)

Max. working Voltage

Max. overload Voltage

Withstand Voltage

L±1.5

W±1

D±1

W1±0.05

d1±0.05

d2±0.05

H±0.05

WRX05B

5W

0R1~100K

28.0

10.0

10.0

5.0

0.75

0.6/1.0

4.0

350V

600V

1000V

WRX07B

7W

0R1~100K

36.0

10.0

10.0

5.0

0.75

0.6/1.0

4.0

500V

700V

1000V

WRX10B

10W

0R1~100K

48.0

10.0

10.0

5.0

0.75

0.6/1.0

4.0.

750V

850V

1000V

Test Item

Test Condition

Performance

Temperature coefficient

Test the resistance value at normal temperature added 100℃,calculate per ℃ resistance value rate.

±350ppm/℃

Short time overload

5~10W: According 10 times rated voltage or max .overload voltage (get the lower)for 5 seconds. 

ΔR≤±(2%R0+0.05Ω)

Resistance to soldering heat

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

ΔR≤±(1%R0+0.05Ω)

Solderability

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

The area of soldering is over 95%

Load life in humidity

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

ΔR≤±(5%R0+0.05Ω)

Load life in heat

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

ΔR≤±(5%R0+0.05Ω)

Nonflammability

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

No visible flame

WRX

05B

J

0

M001

10R00

Product Name

Power

Tol.

SpecialCode

Forming

Ohm

Temperature Fuse Cement Resistors

05B=5W

07B=7W

10B=10W

J=±5%

K=±10%

M001=M

0R100=0.1Ω

10R00=10Ω

10K00=10KΩ