ROHM MCR03 Technical data

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MCR03

Resistors

Thick film rectangular resistors

MCR03 (1608 size)

!Features

1) Power rating of 1 / 10W

2) Highly reliable chip resistor
Ruthenium oxide dielectric offers superior resistance to the element s.

3) Electrodes not corroded by soldering
Thick film makes the electrodes very strong.

4) Resin protective coating for FX, D resistors
Absorbs impact, facilitates mounting.

5) ROHM resistors have approved ISO–9001 certification.
Design and specifications are subject to change without notice. Carefully check the specification sheet supplied with the
product before using or ordering it.

!Ratings

Item Conditions Specifications

Rated power

Rated voltage

Nominal resistance See Table 1.
Operating temperature

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= P×R

100

80

60

40

POWER LOAD (%)

20

0

−55 0 70 100 125 155
AMBIENT TEMPERATURE (°C)

Fig.1

E: Rated voltage (V) P: Rated power (W)
R: Nominal resistance (Ω)

0.10W (1 / 10W)

C

at 70°

Limiting element voltage 50V

−55°C to +155°C

1/5

MCR03

Resistors

Jumper type

Resistance
Rated current
Operating temperature

!Before using components in circuits where they will be exposed to transient s 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.

!

Characteristics

Resistance

Variation of resistance
with temperature

Overload

Table 1

Max. 50mΩ

1A

−55°C to +155°C

Resistance tolerance

J (±5%)

FX (±1%) (EZP type)

D (±0.5%) (EZP type)

Resistance range

(Ω)

1.0 ≤ R < 2.2 500±350

2.2 ≤ R < 10 ±500

10 ≤ R ≤ 2.2M
10 ≤ R < 100 ±100

(E24)
(E24)
(E24)
(E24,96)
(E24)
(E24)

Resistance temperature coefficient

(ppm/°C)

±20010 ≤ R ≤ 10M
±100

±50100≤ R ≤ 1M

Item Test conditions (JIS C 5201-1)

Resistor type

J : ±5%
FX : ±1%
D : ±0.5%

± (2.0%+0.1Ω) Max. 50mΩ

Guaranteed value

Max. 50mΩ JIS C 5201-1 4.5

See Table.1

Jumper type

JIS C 5201-1 4.8
Measurement : −55 / +25 / +125°C

JIS C 5201-1 4.13
Rated voltage (current) ×2.5, 2s.
Limiting element voltage ×2 : 100V

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

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.

Max. 50mΩ

Max. 50mΩ

Max. 100mΩ

Max. 100mΩ

Max. 100mΩ

Max. 50mΩ

Max. 50mΩ

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

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

JIS C 5201-1 4.19
Test temp. : −55

JIS C 5201-1 4.24

°C, 93%RH

40
Test time : 1,000h~1,048h

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

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

JIS C 5201-1 4.25.3

°C

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

JIS C 5201-1 4.29

°C

, Immersion cleaning, 5±0.5min.

23±5
Solvent : 2-propanol

JIS C 5201-1 4.33

°C

~+125°C 5cyc

°C

°C

°C

2/5

Resistors

!External dimensions (Units : mm)

MCR03

1

0.3±0.2

2

3

0.3±0.2

1.6±0.1

5

(J) (FX, D)

4

0.45±0.1

0.8±0.1

6

!

Packaging

Reel Taping

ABD

0 2

0 4

0 6

0 2

0 4

0 6

0 8

C

Label

0 8

EIAJ ET-7200A compliant

Thick paper

mount

No.

Thick dielectric glaze of ruthenium

1

(only silver used for jumper)

2

Thick film of palladium-silver for primary electrode

3

Nickel-coated secondary electrode

4

External electrode coated with Sn/Pb or Sn

5

Alumina substrate

6

Overcoating (J : glass, FX, D : resin)

Heat crimp cover/Tape

(Underside paper tape) Chip resistor Square punchout hole

Material

P

0

P

2

P

1

φD

0

B

0

A

0

WFEA0B

8.0±0.3 3.5±0.05 1.75±0.1 1.1±0.1 1.9±0.1

D

φ1.5

0

+0.1

P

0

P

4.0±0.1 4.0±0.1 2.0±0.05

0

1

P

2

E

F

(Units : mm)

0

T

2

Max. 1.1

W

2

T

Bulk case

(Units : mm)

ABCD

φ180

0

φ60

−3

+1

+1.0

9

0

±

0.2

φ13

0

Shutter

EIAJ ET-7201A compliamt

Slider

110±0.7

12±0.1

36

0

−0.2

(Units: mm)

3/5

Resistors

!Part designation

3-digit or 4-digit IEC coding system

Nominal resistancePart No.

MCR03

Packaging / Processing specifications Resistance tolerance

Part No.

Code Packaging

MCR03 EZH

EZP
PZHI

!Dimensions

1.80

1.75

1.70

1.65

(mm)

1.60

1.55

LENGTH

1.50

1.45

1.40
1 10 100 1k 10k 100k 1M 10M

JIS C 5201-1 4.4.2
SAMPLE SIZE : n=20pcs
MICROMETER

RESISTANCE

Fig.2 Dimensions (length)

!

Electrical characteristics

6.0

4.0

(%)

2.0

0

−2.0

DC RESISTANCE

−4.0

−6.0

1 10 100 1k 10k 100k 1M 10M

JIS C 5201-1 4.5
SAMPLE SIZE : n=20pcs
20°C 65%RH

RESISTANCE

Fig.5 Resistance

Paper tape

Bulk case

(Ω)

(Ω)

Standard ordering

unit(pcs)

5,000
5,000

25,000

1.00

0.95

0.90

0.85

(mm)

0.80

0.75

WIDTH

0.70

0.65

0.60

900
700
500
300
100

−100

−300

−500

−700

TEMPERATURE COEFICIENT (ppm / °C)

−900

±5%J

Specify "J" for jumper also.

JIS C 5201-1 4.4.2
SAMPLE SIZE : n=20pcs
MICROMETER

1 10 100 1k 10k 100k 1M 10M

RESISTANCE

±1%

F

D

(Ω)

Fig.3 Dimensions (width)

JIS C 5201-1 4.8
SAMPLE SIZE : n=10pcs
25°C / −55°C
25°C / 125°C

1 10 100 1k 10k 100k 1M 10M

RESISTANCE

(Ω)

Fig.6 Variation of resistance with

temperature

±0.5%

Resistance temperature
coefficient

±100(ppm/°C)X

See table.1

Blank

0.65

0.60

0.55

0.50

(mm)

0.45

0.40

THICKNESS

0.35

0.30

0.25
1 10 100 1k 10k 100k 1M 10M

JIS C 5201-1 4.4.2
SAMPLE SIZE : n=20pcs
MICROMETER

RESISTANCE

Fig.4 Dimensions (thickness)

5.0

4.0

3.0

2.0

1.0

(%)

0

∆R/R

−1.0

−2.0

−3.0

−4.0

−5.0

1 10 100 1k 10k 100k 1M 10M

JIS C 5201-1 4.13
SAMPLE SIZE : n=10pcs
RATED VOLTAGE ×2.5
TIMES : 2s
LIMITING ELEMENT VOLTAGE×2 : 100V

RESISTANCE

Fig.7 Overload

(Ω)

(Ω)

4/5

Resistors

2.0

1.5

1.0

0.5

(%)

0

∆R/R

−0.5

−1.0

−1.5

−2.0

1 10 100 1k 10k 100k 1M 10M

Fig.8 Resistance to soldering heat

JIS C 5201-1 4.18
SAMPLE SIZE : n=10pcs
SOLDERING CONDITION : 260°C 10s

RESISTANCE

(Ω)

4.0

3.0

2.0

1.0

(%)

0

∆R/R

−1.0

−2.0

−3.0

−4.0

1 10 100 1k 10k 100k 1M 10M

JIS C 5201-1 4.25.1
SAMPLE SIZE : n=10pcs
70°C 1,000h
OVERLOAD : THE RATED VOLTAGE

RESISTANCE

(Ω)

Fig.11 Endurance at 70°C

2.0

1.5

1.0

0.5

(%)

0

∆R/R

−0.5

−1.0

−1.5

−2.0

1 10 100 1k 10k 100k 1M 10M

JIS C 5201-1 4.33
SAMPLE SIZE : n=10pcs
ENDURANCE WITH 90mm WIDTH

RESISTANCE

(Ω)

Fig.14 Bend strength of

the end face plating

MCR03

2.0

1.5

1.0

0.5

(%)

0

∆R/R

−0.5

−1.0

−1.5

−2.0

1 10 100 1k 10k 100k 1M 10M

JIS C 5201-1 4.19
SAMPLE SIZE : n=10pcs

−55°C / 125°C 5cyc.

RESISTANCE

(Ω)

Fig.9 Rapid change of

4.0

3.0

2.0

1.0

(%)

0

∆R/R

−1.0

−2.0

−3.0

−4.0

1 10 100 1k 10k 100k 1M 10M

JIS C 5201-1 4.24
SAMPLE SIZE : n=10pcs
40°C 93%RH WITH NO LOAD 1,000h

RESISTANCE

(Ω)

Fig.10 Damp heat, steady state

temperature

4.0

3.0

2.0

1.0

(%)

0

∆R/R

−1.0

−2.0

−3.0

−4.0

1 10 100 1k 10k 100k 1M 10M

JIS C 5201-1 4.25.3
SAMPLE SIZE : n=10pcs
155°C WITH NO LOAD 1,000h

RESISTANCE

(Ω)

Fig.12 Endurance

2.0

1.5

1.0

0.5

(%)

0

∆R/R

−0.5

−1.0

−1.5

−2.0

1 10 100 1k 10k 100k 1M 10M

JIS C 5201-1 4.29
SAMPLE SIZE : n=10pcs
IPA, 5min.

RESISTANCE

(Ω)

Fig.13 Resistance to solvents

5/5