Low Ohmic Thick Film Chip Resistors
MCR18 (3216 size (1206 size) : 1 / 4W)
Features
1) Power rating of 1 / 4W
2) Highly reliable chip resistor Ruthenium oxide dielectric offers superior resistance to the elements.
3) Electrodes not corroded by soldering
Thick film makes the electrodes very strong.
4) ROHM resistors have approved ISO9001- / ISO/TS 19649- certification.
Ratings
Design and specifications are subject to change without notice. Carefully check the specification sheet before using or ordering
it.
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 TEMPERAT
URE (°C)
Fig.1
°
C.
0.25W (1 / 4W)
at 70°C
Rated voltage
Nominal resistance See Table 1.
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= P×R
E: Rated voltage (V)
P: Rated power (W)
R: Nominal resistance (Ω)
Limiting element voltage 1.51(9.1Ω)
−55
°
C to +155°C
Table 1
Resistance tolerance
F(±1%)
J (±5%)
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.
Special
specification
L
L
S
L
L
S
Resistance range
(Ω)
0.1 to 0.13
0.15 to 9.1
0.047 to 0.091
0.1 to 0.13 400±200
0.15 to 0.91
0.047 to 0.091
(E24)
(E24)
(E24)
(E24)
(E24)
(E24)
Resistance temperature coefficient
(ppm/°C)
400±200
±250
500±300
±250
500±300
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2011 ROHM Co., Ltd. All rights reserved.
2011.12 - Rev.G
MCR18 (3216 size (1206 size) : 1 / 4W)
Characteristics
Guaranteed value
Resistor type
Resistance
Item Test conditions (JIS C 5201-1)
J : ±5%
F : ±1%
JIS C 5201-1 4.5
Load voltage : A
Measuring method : measure upper termination
by 4 proves.
Upper termination
Prove
Data Sheet
Variation of resistance
with temperature
Overload
Solderability
Resistance to
soldering heat
Rapid change of
temperature
Damp heat, steady state
Endurance at 70°C
Endurance
Component
solvent resistance
Bend strength of
the end face plating
Dimensions (Unit : mm)
See Table.1
± (2.0%+0.005Ω)
A new uniform coating of minimum of
95% of the surface being immersed
and no soldering damage.
± (1.0%+0.005Ω)
No remarkable abnormality on the appearance.
± (1.0%+0.005Ω)
± (3.0%+0.005Ω)
± (3.0%+0.005Ω)
± (3.0%+0.005Ω)
± (0.5%+0.005Ω)
Without open.
JIS C 5201-1 4.8
Measurement : +25 / −55 / +25 / +125°C
JIS C 5201-1 4.13
Rated voltage (current) ×2.5, 2s.
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
°C
Test temp. : −55
to +125°C 5cyc
JIS C 5201-1 4.24
40
°C, 93%RH
Test time : 56days
JIS C 5201-1 4.25.1
70
°C,
Rated voltage
1.5h : ON − 0.5h : OFF
Test time : 1,000h
JIS C 5201-1 4.25.3
°C
155
Test time : 1,000h to 1,048h
JIS C 5201-1 4.29
°C±5°C
23
Solvent : 2-propanol
JIS C 5201-1 4.33
1
0.5±0.25
0.5±0.25
3.2±0.15
2
3
4
5
6
0.55±0.1
1.6±0.15
No.
1
Resistive element (Oxide metal thick film)
2
Silver thick film electrode
3
Nickel electrode
4
Sn electrode
5
Alumina substrate
6
Overcoating (Glass)
Material
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2011 ROHM Co., Ltd. All rights reserved.
2011.12 - Rev.G
MCR18 (3216 size (1206 size) : 1 / 4W)
Packaging
Reel Taping
0 2
0 4
0 6
ABD
C
ABCD
0
φ180
−1.5
φ60
Part No. Explanation
0 6
0 8
+1
9
0
MC 1R
0 4
0 2
+1.0
0
Label
EIAJ ET-7200B compliant
(Unit: mm)
±0.2
φ13
8 E Z H J L
0 8
P
0
P
2
P
1
A
2
Heat crimp cover/Tape
Thick paper
(Underside paper tape) Chip resistor Square punchout hole
mount
WF EA2B
8.0±0.3 3.5±0.05 1.75±0.1
D
0
P
0
P
1
+0.1
φ1.5
4.0±0.1 4.0±0.1 2.0±0.05
0
φD
B
1.95
Data Sheet
0
2
+0.1
−0.05
P
2
(Unit: mm)
2
+0.15
3.5
−0.05
T
2
Max. 1.1
E
F
W
2
T
Part No.
Packaging Specifications Code
Part No.
MCR18
Reel (φ180mm) : Compatible with JEITA standard "EIAJ ET-7200B"
: Standard product
Resistance tolerance
Code Packaging specifications Reel
J(±5%) F(±1%)
EZH
Resistance tolerance
F
±
1%
±
5%
J
Paper tape (4mm Pitch)
Special part number
0.1 to 9.1Ω (class F)
L
0.1 to 0.91Ω (class J)
0.047 to 0.091Ω
S
φ180mm (7inch)
Nominal resistance
Resistance code, 3 or 4 digits.
Resistance
tolerance
+Special P/N
FL,FS,JSJL::4 digits
Basic ordering unit(pcs)
5,000
Resistance
code
3 digits
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2011 ROHM Co., Ltd. All rights reserved.
2011.12 - Rev.G
Notes
No copying or reproduction of this document, in part or in whole, is permitted without the
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, communication 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
failure of any Product, such as derating, redundancy, re control and fail-safe designs. ROHM
shall bear no responsibility whatsoever for your use of any Product outside of the prescribed
scope or not in accordance with the instruction manual.
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
may result in a direct threat to human life or create a risk of human injury (such as a medical
instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuelcontroller or other safety device). ROHM shall bear no responsibility in any way for use of any
of the Products for the above special purposes. If a Product is intended to be used for any
such special purpose, please contact a ROHM sales representative before purchasing.
If you intend to export or ship overseas any Product or technology specied herein that may
be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to
obtain a license or permit under the Law.
Notice
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© 2011 ROHM Co., Ltd. All rights reserved.
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R1120
A
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