■
VOLTAGE RATING
Resistor shall have a rated DC or RMS continuous working voltage at commercial line
frequence and wave from corresponding to the power rating, as determined from the following formula
E: Rated continuous working voltage
P: Power rating
E = P
X
R
R: Nominal resistance
■
POWER RATING
Resistor shall have a power specified on table and based on continuous full-load operation at an ambient temperature
of 75
˚C
for 2W, 40
˚C
for 3W through 10W, 25
˚C
for over wattage.
For resistors operated at an ambient temp. exceeding these specified level, the load shall be derated in accordance
with Fig. 1 below.
100
2W
Rated Load(%)
75
3
50
15
25
0
•
•
5
•
7
•
10W
20W
25
40 50
75
100
150
155
200
250
275
Ambient Temperature(˚C)
■
SURFACE TEMPERATURE RISE
250
Surface Temp. Rise
200
150
100
50
0
20W
15W
10W
7W
5W
3W
2W
20
40
60
80
100
120
Rated Load(%)
■
PERFORMANCE CHARACTERISTICS
Item
Operating temp. range
Load life
Moisture load life
Dielectric Withstanding voltage
Thermal shock
Short time over load
-25˚C
~
+155˚C
Max. permissible deviation
No mechanical damage No arcing or breakdown
±
(5% + 0.05Ω)
No mechanical damage
±
(2% + 0.05Ω)
No mechanical damage
±
(5% + 0.05Ω)
No mechanical damage
±
(2% + 0.05Ω)
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before your order and/or use.
89
FIXED RESISTORS
No mechanical damage
±
(5% + 0.05
Ω)
ABCO [ ABCO ELECTRONICS CO.LTD ]
