Fusible Resistor ( RF Series )

FEATURES :

 photo

@

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

Load life under high temperature

5%

JIS-C-5202 7.10@Rated voltage at 70J for 1,000 hours

Load life under high humidity

5%

JIS-C-5202 7.90@Rated voltage at 40J,95% RH for 1,000 hours

Temp. coeff. of resistance

350 ppm/J

JIS-C-5202 5.20@Room temp. + 100J

Short time overload

2%

JIS-C-5202 5.50@4 times the rated power for 5 seconds

Temperature cycling

1%

JIS-C-5202 7.40@5 cycles for -55 ~ +155J

Immersion in solder

1%

JIS-C-5202 6.40@350J for 3.5 seconds

 

Fusing characteristics  ( Residual resistance 100 times nominal resistance )
Rated Power
Resistance Range
Fusing Time
RFU1/6WBRFS1/4W
0.10~1K[
0.10~0.18[
0.2~0.47[
0.51~1K[
------
60s MAX
RFU1/4WBRFU1/3W
0.10~15K[
0.10~0.22[
------
0.24~9.1[
1.0~15K[
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[
1.0~4.7K[
60s MAX
RFU1WBRFS2W
0.10~4.7K[
------
------
0.10~1.0[
1.1~4.7K[
60s MAX
RFU2WBRFS3W
0.10~4.7K[
------
------
0.10~1.0[
1.1~4.7K[
60s MAX

Various type of forming & taping are available
Coating colorG RFU (gray),  RFS (pink)

 

RATINGB DIMENSIONS@

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
RFU1/6BRFS1/4W
1/6BS1/4
0.11K
100V
150V
200V
3.50.5
1.70.3
273
0.450.05
RFU1/4BRFU1/3W
1/4B1/3
0.115K
250V
300V
250V
60.3
2.40.1
282
0.60.05
RFS1/2W
1/2
0.133K
250V
300V
250V
60.3
2.40.1
282
0.60.05
RFS1W
1
0.133K
250V
300V
250V
90.5
3.00.5
303
0.80.05
RFU1/2W
1/2
0.14.7K
250V
300V
250V
90.5
3.00.5
303
0.60.05
RFU1WBRFS2W
1B2
0.14.7K
350V
500V
300V
4.00.5
383
0.80.05
RFU2WBRFS3W
2B3
0.14.7K
350V
500V
300V
5.50.5
383
0.80.05

 

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