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c 2009 ROHM Co., Ltd. All rights reserved. 2009.04 - Rev.B
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
0.2W (1/5W)
−55°C to +155°C
at 70°C
Item Conditions Specifications
Rated power
Rated voltage
Operating temperature
Nominal resistance
See Table 1.
Limiting element voltage 50V
0
20
40
60
80
100
−55 0 70 100 155
AMBIENT TEMPERATURE (°C)
POWER LOAD (%)
Fig.1
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
Power must be derated according to the power derating curve in
Figure 1 when ambient temperature exceeds 70°
C
.
D(±0.5%)
J (±5%)
1 ≤ R ≤ 10M (E24)
(E24)
(E24)
±100
±2001 ≤ R ≤ 10M
T
able 1
R
esistance tolerance Resistance range
(Ω)Resistance temperature coefficien
t
(ppm/°C)
F (±1%)
±1001 ≤ 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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Data Sheet ESR03
zCharacteristics
Item Test conditions (JIS C 5201-1)
Resistor type
Guaranteed value
Resistance
Variation of resistance
with temperature
Solderability
Damp heat, steady state
Endurance at 70°C
Endurance
Rapid change of
temperature
Bend strength of
the end face plating
Static electric
characteristics
Resistance to solvent
Resistance to
soldering heat
Overload ± (2.0%+0.1Ω)
± (1.0%+0.05Ω)
± (3.0%+0.1Ω)
J : ±5%
F : ±1%
D : ±0.5%
See Table.1
No remarkable abnormality on the appearance.
A new uniform coating of minimum of
95% of the surface being immersed
and no soldering damage.
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 4.18
Soldering condition : 260±5
°C
Duration of immersion : 10±1s.
JIS C 5201-1 4.24
40
°C, 93%RH
Test time : 1,000h to 1,048h
± (3.0%+0.1Ω)
± (3.0%+0.1Ω)
± (1.0%+0.05Ω)
± (1.0%+0.05Ω)
± (1.0%+0.05Ω)
± (5.0%+0.05Ω)
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
n.
Solvent : 2-propanol
JIS C 5201-1 4.19
Test temp. : −55
°C to
+125
°C
5cyc
JIS C 5201-1 4.33
EIAJ ED-4701 1300 Test method 304
Voltage : 3kv
R : 1.5kΩ
C : 100pF
Apply cycle : 1 time
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 4.13
Rated voltage (current) ×2.5, 2s.
Maximum overload voltage : 100V
zDimensions (Unit : mm)
No.
Material
Resistive element (Oxide metal thick film)
Silver thick film electrode
Nickel electrode
Sn electrode
Alumina substrate
Overcoating (Resin)
0.3±0.2
0.8±0.1 0.45±0.1
0.3±0.2
1.6±0.1
1
2
3
4
5
6
1 6
2
4
5
6
3
Marking
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c 2009 ROHM Co., Ltd. All rights reserved. 2009.04 - Rev.B
Data Sheet ESR03
zPackaging
0 2
0 4
0 6
0 8
0 2
0 4
0 6
0 8
C
ABD
ABCD
φ13±0.2
Label
Reel Taping
EIAJ ET-7200B compliant
φ180 0
−1.5 φ60 +1
09 +1.0
0
(Unit: mm)
P
0
P
2
P
1
E
FW
T
2
φ
D
0
A
0
B
0
Thick paper
mount (Underside paper tape)
Chip resistor Square punchout hole
Heat crimp cover / Tape
(Unit : mm)
WFEA
0
B
0
D
0
P
0
P
1
P
2
T
2
8.0
±
0.3 3.5
±
0.05 1.75
±
0.1 1.1
±
0.1 1.9
±
0.1
φ
1.5 4.0
±
0.1 4.0
±
0.1 2.0
±
0.05 Max. 1.1
+0.1
0
zPart No. Explanation
Part No.
ES 30R
±
5%
Resistance tolerance
J
±
0.5%D
±
1%F
E Z P J
EZP 5,000Paper tape (4mm Pitch) φ180mm (7inch)ESR03
R
eel (φ180mm) : Compatible with JEITA standard "EIAJ ET-7200B"
: Standard product
Part No. Resistance tolerance
Code Packaging specifications Reel
Basic ordering unit(pcs
)
P
ackaging Specifications Code
J(
±
5%) F(
±
1%) D(
±
0.5%)
Nominal resistance
J
F
D
:
:
:
3 digits
4 digits
4 digits
Resistance code, 3 or 4 digits.
Resistance
tolerance Resistance
code
R0039
A
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consent of ROHM Co.,Ltd.
The content specied herein is subject to change for improvement without notice.
The content specied herein is for the purpose of introducing ROHM's products (hereinafter
"Products"). If you wish to use any such Product, please be sure to refer to the specications,
which can be obtained from ROHM upon request.
Examples of application circuits, circuit constants and any other information contained herein
illustrate the standard usage and operations of the Products. The peripheral conditions must
be taken into account when designing circuits for mass production.
Great care was taken in ensuring the accuracy of the information specied in this document.
However, should you incur any damage arising from any inaccuracy or misprint of such
information, ROHM shall bear no responsibility for such damage.
The technical information specied herein is intended only to show the typical functions of and
examples of application circuits for the Products. ROHM does not grant you, explicitly or
implicitly, any license to use or exercise intellectual property or other rights held by ROHM and
other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the
use of such technical information.
The Products specied in this document are intended to be used with general-use electronic
equipment or devices (such as audio visual equipment, ofce-automation equipment, commu-
nication devices, electronic appliances and amusement devices).
The Products specied in this document are not designed to be radiation tolerant.
While ROHM always makes efforts to enhance the quality and reliability of its Products, a
Product may fail or malfunction for a variety of reasons.
Please be sure to implement in your equipment using the Products safety measures to guard
against the possibility of physical injury, re or any other damage caused in the event of the
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shall bear no responsibility whatsoever for your use of any Product outside of the prescribed
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The Products are not designed or manufactured to be used with any equipment, device or
system which requires an extremely high level of reliability the failure or malfunction of which
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