ROHM KTR03EZPJ Technical data

T

R

t

High Voltage Resistance Chip Resistors

KTR03 (0603 size : 1 / 10W)

zFeatures

1) Power rating of 1 / 10W

2) Limiting element voltage of KTR series is
7 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 ISO9001- / ISO/TS 16949- certification.

Design and specifications are subject to change without notice.
Carefully check the specification sheet before using or ordering it.

zRatings

Item Conditions Specifications

Rated power

Power must be derated according to the power derating curve in
Figure 1 when ambient temperature exceeds 70°

100

80

60

40

POWER LOAD (%)

20

0

−55 0 70 100 155
AMBIENT TEMPERATURE (°C)

Fig.1

C

.

0.10W (1 / 10W)
at 70°C

Rated voltage

Nominal resistance
Operating temperature

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×R

See Table 1.

P: Rated power (W)
R: Nominal resistance (Ω)

Limiting element voltage 350V

C to + 155°C

−55°

able 1

esistance tolerance

F

(±1%)

J (±5%)

Resistance range

(Ω)

1≤ R ≤ 10M

(E24)
(E24)

Resistance temperature coefficien

(ppm/°C)

±100
±2001≤ R ≤ 10M

zBefore 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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2009.08 - Rev.C

n.

Data Sheet KTR03

z

Characteristics

Item Test conditions (JIS C 5201-1)

Resistance
Variation of resistance

with temperature

Overload

Solderability

Resistance to
soldering heat

Rapid change of
temperature

Damp heat, steady state

Endurance at 70°C

Endurance

Resistance to solvent

Guaranteed value

Resistor type

J : ±5%
F : ±1%

See Table.1

± (2.0%+0.1Ω)

A new uniform coating of minimum of
95% of the surface being immersed
and no soldering damage.

± (1.0%+0.05Ω)

No remarkable abnormality on the appearance.

± (1.0%+0.05Ω)

± (3.0%+0.1Ω)

± (3.0%+0.1Ω)

± (3.0%+0.1Ω)

± (1.0%+0.05Ω)

JIS C 5201-1 4.5
JIS C 5201-1 4.8

Measurement : −55 / +25 / +125°C
JIS C 5201-1 4.13

Rated voltage (current) ×2.5, 2s.
Maximum overload voltage : 500V

JIS C 5201-1 4.17
Rosin·Ethanol (25%WT)
Soldering condition : 235±5°C
Duration of immersion : 2.0±0.5s.

JIS C 5201-1 4.18
Soldering condition : 260±5°C
Duration of immersion : 10±1s.

JIS C 5201-1 4.19
Test temp. : −55°C to +125°C 5cyc

JIS C 5201-1 4.24
40°C, 93%RH
Test time : 1,000h to 1,048h

JIS C 5201-1 4.25.1
Rated voltage (current), 70°C

1.5h : ON − 0.5h : OFF
Test time : 1,000h to 1,048h

JIS C 5201-1 4.25.3
155°C
Test time : 1,000h to 1,048h

JIS C 5201-1 4.29
23±5°C, Immersion cleaning, 5±0.5mi
Solvent : 2-propanol

Bend strength of
the end face plating

zDimensions (Unit : mm)

1

0.3±0.2

0.3±0.2

1.6±0.1

Mark

± (1.0%+0.05

Ω)

Without mechanical damage such as breaks.

2

3

4

5

0.45±0.1

0.8±0.1

6

No.

1

Resistive element (Oxide metal thick film)

2

Silver thick film electrode

3

Nickel electrode

4

Sn electrode

5

Alumina substrate

6

Overcoating (Resin)

JIS C 5201-1 4.33

Material

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2009 ROHM Co., Ltd. All rights reserved.

2009.08 - Rev.C