Non-Smoke Thermal Fuse Resistor (RFT Series)


FEATURES :
Compact type with safety design of Non-flammability and  insulation.
UL1412 Recognized：3W、5W、7W、10W / 0.1Ω∼1KΩ
Can be produced according to customer’s request.


CHARACTERISTICS：
ITEM
SPEC
REMARKS

Load life under high temperature

±5%

JIS C 5201-1　Rated voltage at 70℃ for 1,000 hours 1.5h ON/ 0.5h OFF cycle
(4.25.1)　　　

Moisture resistance

±2%

JIS C 5201-1　240hr；40℃；90 to 95% RH ,No load
　　　　　　　

Temp coeff.of resistance

±350ppm/oC

JIS C 5201-1　Tf-20℃
　　　　　　　Duration time：30minute

Short time overload

±2%

JIS C 5201-1　2 times the rated power for 5 seconds
(4.13)　　　　

Dielectric withstanding voltage

------

JIS C 5201-1　V-Block, test voltage：1100V
(4.7)　　　　　Duration time：60 s

Resistance to soldering heat

±1%

JIS C 5201-1　260℃±5 ℃ for 10 seconds(焊錫槽)
(4.18)　　　　 350℃±10 ℃ for 3.5 seconds(手焊錫)

Insulation resistance

>1000MW

JIS C 5201-1　500V (DC)；1 minute
(4.6.1)

 

RATINGS FUSIBLE
Thermal Fuse
Power rating (W)

Temperature function Tf

Thermal
Fuse temp.

Voltage
Rating

3W

5W

7W

10W

65

61±3

AC 250V

0.3

0.4

0.6

0.7

76

72±3

0.5

0.6

0.8

1.0

86

81±2

0.6

0.8

1.0

1.3

102

98±3

0.9

1.1

1.4

1.7

115

111±2

1.1

1.4

1.7

2.1

127

123±2

1.3

1.7

2.0

2.5

133

129±3

1.5

2.0

2.4

3.0

136

131±2

1.6

2.1

2.6

3.2

139

134±2

1.7

2.2

2.7

3.3

145

140±2

1.8

2.3

2.8

3.5

 

DIMENSIONS

Rated power

Cement High
H

Cement Width.
W

Pitch

Ｐ

Lead length
h

Lead dia.
Fuse:d1φ

Lead dia.
wire:d2φ

3

25 ±1

12 ±1

5 ±1

5 ±1

0.6 ±0.1

0.8 ±0.1

5

25 ±1

13.5 ±1

5 ±1

5 ±1

0.6 ±0.1

0.8 ±0.1

7

39 ±1

13 ±1

5 ±1

5 ±1

0.6 ±0.1

0.8 ±0.1

10

23 ±1

20 ±1

12 ±1

5 ±1

0.8 ±0.1

0.8 ±0.1

10S

35 ±1.5

16 ±1

7 ±1

5 ±1

0.8 ±0.1

0.8 ±0.1

適用：3W、5W、7W

10S
適用：10W

 

...............................................................................................................................................................................................................................................