ROHM ESR03EZPJ Technical data

Table 1
R

t

Anti-surge thick film chip resistor

ESR03 (0603 size : 1 / 5W)

zFeatures

1) Power rating of 1 / 5W (MCR03 1/10W)

2) Superior anti surge to MCR series

3) Highly reliable chip resistor
Ruthenium oxide dielectric offers superior resistance to the elements.

4) ROHM resistors have approved ISO–9001, ISO/TS 16949 certification.

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

zApplications

Automotive, LCD Monitor, projector, power supply, charger, inverter and so on.

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

.

0.2W (1/5W)
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 50V

C to +155°C

−55°

esistance tolerance

D(±0.5%)
F (±1%)
J (±5%)

Resistance range

10 ≤ R ≤ 1M

(Ω)

(E24)
(E24)
(E24)

Resistance temperature coefficien

(ppm/°C)

±100
±1001 ≤ R ≤ 10M
±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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2009.10 - Rev.C

n.

Data Sheet ESR03

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

Bend strength of
the end face plating

Guaranteed value

Resistor type

J : ±5%
F : ±1%
D : ±0.5%

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)

± (1.0%+0.05Ω)

Without mechanical damage such as breaks.

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 : 100V

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

°C, 93%RH

40
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

°C

155
Test time : 1,000h to 1,048h

JIS C 5201-1 4.29

°C

, Immersion cleaning, 5±0.5mi

23±5
Solvent : 2-propanol

JIS C 5201-1 4.33

Static electric
characteristics

zDimensions (Unit : mm)

1 6

0.3±0.2

0.3±0.2

1.6±0.1

6

Marking

± (5.0%+0.05Ω)

EIAJ ED-4701 1300 Test method 304
Voltage : 3kv
R : 1.5kΩ
C : 100pF
Apply cycle : 1 time

2

3

4

5

0.45±0.1

0.8±0.1

No.

1

Resistive element (Oxide metal thick film)

2

Silver thick film electrode
Nickel electrode

3

Sn electrode

4

Alumina substrate

5

Overcoating (Resin)

6

Material

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2009.10 - Rev.C