KTR18
Resistors
Endured high voltage fixed thick film chip resistors
KTR18
(3216 size: 1 / 4W)
Features
1) Power rating of 1 / 4W
2) Limiting element voltage of KTR series is twice compared with that of MCR series.
3) Highly reliable chip resistor Ruthenium oxide dielectric offers superior resistance to the elements.
4) ROHM resistors have approved ISO鈥?001 certification.
Design and specifications are subject to change without notice. Carefully check the specification sheet before using or
ordering it.
Ratings
Item
Rated power
Conditions
Power must be derated according to the power derating curve in
Figure 1 when ambient temperature exceeds 70
擄
C.
100
80
60
40
20
0
Specifications
0.25W (1 / 4W)
at 70
擄
C
POWER LOAD (%)
鈭?5
0
70
100
155
AMBIENT TEMPERATURE
(擄C)
Fig.1
Rated voltage
The voltage rating is calculated by the following equation.
If the value obtained exceeds the limiting element voltage,
the voltage rating is equal to the maximum operating voltage.
E: Rated voltage (V)
E= P脳R
P: Rated power (W)
R: Nominal resistance (鈩?
Limiting element voltage
400V
Nominal resistance
Operating temperature
See Table 1.
鈭?5
擄
C
to
+155
擄
C
1/6