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KTR18 Datasheet(PDF) 1 Page - Rohm

Part No. KTR18
Description  Endured high voltage fixed thick film chip resistors
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Maker  ROHM [Rohm]
Homepage  http://www.rohm.com
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KTR18 Datasheet(HTML) 1 Page - Rohm

   
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KTR18
Resistors
Rev.B
1/5
Endured high voltage fixed thick film chip resistors
KTR18 (1206 size: 1 / 4W)
Features
1) Power rating of 1 / 4W
2) Limiting element voltage of KTR series is 2.5 times 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–9001 certification.
Design and specifications are subject to change without notice. Carefully check the specification sheet before using or
ordering it.
Ratings
0.25W (1 / 4W)
−55
°C to +155°C
500V
at 70
°C
Item
Conditions
Specifications
Rated power
Rated voltage
Operating temperature
Nominal resistance
See Table 1.
Limiting element voltage
Power must be derated according to the power derating curve in
Figure 1 when ambient temperature exceeds 70
°C.
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)
P: Rated power (W)
R: Nominal resistance (
Ω)
E
= P×R
0
20
40
60
80
100
−55
0
70
100
155
AMBIENT TEMPERAT
URE (
°C)
Fig.1
Table 1
Resistance tolerance
Resistance range
(
Ω)
Resistance temperature coefficient
(ppm /
°C)
F (
±1%)
J (
±5%)
1
≤ R ≤ 10M
1
≤ R ≤ 10M (E24)
(E24)
±100
±200
Before using components in circuits where they will be exposed to transients such as pulse loads (short–duration, high–level loads), be certain to evaluate the
component in the mounted state. In addition, the reliability and performance of this component cannot be guaranteed if it is used with a steady state voltage that
is greater than its rated voltage.


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