Fusible Resistor (RF Series)

FEATURES :

 
Function as a resistor in normal operation condition.  
Quick fusing protects circuit from excessive overload.  

 

CHARACTERISTICS¡G
ITEM
SPEC
REMARKS

Load life under high temperature

¡Ó5%

JIS C 5201-1¡@¡@Rated voltage at 70¢J for 1,000 hours

(4.25.1)¡@¡@¡@¡@

Load life under high humidity

¡Ó5%

JIS C 5201-1¡@¡@Rated voltage at 40¢J,95% RH for 1,000 hours

(4.24)¡@¡@¡@¡@¡@

Temp. coeff. of resistance

¡Ó350 ppm/¢J

JIS C 5201-1¡@¡@Room temp. + 100¢J

¡@¡@¡@¡@¡@¡@¡@¡@

Short time overload

¡Ó2%

JIS C 5201-1¡@¡@4 times the rated power for 5 seconds

(4.13)¡@¡@¡@¡@¡@

Temperature cycling

¡Ó1%

JIS C 5201-1¡@5 cycles for ¡V25¢J¡Ó3¢J(30min)¡Froom temp.(30min)

(4.19)¡@¡@¡@¡@ ~ +85¢J¡Ó3¢J(30min) room temp. (30min)

Resistance to soldering heat

¡Ó1%

JIS C 5201-1¡@¡@260¢J¡Ó5¢J for 10 seconds(²k¿ü¼Ñ)

(4.18)¡@¡@¡@¡@¡@ 350¢J¡Ó10¢J for 3.5 seconds(¤â²k¿ü)

 

Fusing characteristics ( Residual resistance ¡Ù100 times nominal resistance )
Rated Power
Resistance Range
Fusing Time
RFU1/6W¡BRFS1/4W
0.10~1K£[
0.10~0.18£[
0.2~0.47£[
0.51~1K£[
------
60s MAX
RFU1/4W¡BRFU1/3W
0.10~15K£[
0.10~0.22£[
------
0.24~9.1£[
10~15K£[
60s MAX
RFS1/2W
0.10~33K£[
------
------
0.10~1.0£[
1.1~33K£[
60s MAX
RFS1W
0.10~33K£[
------
------
0.10~1.0£[
1.1~33K£[
60s MAX
RFU1/2W
0.10~4.7K£[
0.10~0.33£[
0.47~0.91£[
1.0~9.1£[
10~4.7K£[
60s MAX
RFU1W¡BRFS2W
0.10~4.7K£[
------
------
0.10~1.0£[
1.1~4.7K£[
60s MAX
RFU2W¡BRFS3W
0.10~4.7K£[
------
------
0.10~1.0£[
1.1~4.7K£[
60s MAX

 

 

Various type of forming & taping are available
 
Coating color¡GRFU (gray), RFS (pink)
 

 

 

RATING¡BDIMENSIONS

Model

Power

Rating

(W)

Resistance

Range E-24

£[

Maximum

Working

Voltage

Maximum

Overload

Voltage

Dielectric

Withstanding

Voltage

Dimension (mm)
L
D £p
£d
d £p
RFU1/6¡BRFS1/4W
1/6¡BS1/4
0.1¡ã1K
100V
150V
200V
3.5¡Ó0.5
1.7¡Ó0.3
27¡Ó3
0.45¡Ó0.05
RFU1/4¡BRFU1/3W
1/4¡B1/3
0.1¡ã15K
250V
300V
250V
6¡Ó0.3
2.4¡Ó0.1
28¡Ó2
0.6¡Ó0.05
RFS1/2W
1/2
0.1¡ã33K
250V
300V
250V
6¡Ó0.3
2.4¡Ó0.1
28¡Ó2
0.6¡Ó0.05
RFS1W
1
0.1¡ã33K
250V
300V
250V
9¡Ó0.5
3.0¡Ó0.5
30¡Ó3
0.6¡Ó0.05
RFU1/2W
1/2
0.1¡ã4.7K
250V
300V
250V
9¡Ó0.5
3.0¡Ó0.5
30¡Ó3
0.6¡Ó0.05
RFU1W¡BRFS2W
1¡B2
0.1¡ã4.7K
350V
500V
300V
4.0¡Ó0.5
38¡Ó3
0.8¡Ó0.05
RFU2W¡BRFS3W
2¡B3
0.1¡ã4.7K
350V
500V
300V
5.5¡Ó0.5
38¡Ó3
0.8¡Ó0.05

 

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