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MCR18
Resistors
Thick film rectangular Low resistance series
MCR18 (3216 size (1206 size) : 1 / 4W)
zFeatu res
1) Power rating of 1 / 4W
2) Highly reliable chip resistor Ruthenium oxide dielectric of fers superior resist ance to the eleme nts.
3) Electrodes not corroded by soldering
Thick film makes the electrodes very strong.
4) 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 TEMPERAT
Fig.1
URE (°C)
°
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: Rated voltage (V)
E= P×R
P: Rated power (W)
R: Nominal resistance (Ω)
Limiting element voltage
°
C to +155°C
−55
1.58V(10Ω)
Rev.A 1/4
MCR18
Resistors
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 lo ads), be certain to evaluate the
z
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
zCharacteristics
Item Test conditions (JIS C 5201-1)
Resistance
J : ±5%
F : ±1%
Resistance range
(Ω)
0.15≤ R ≤ 9.1
0.1≤ R ≤ 0.13
0.047 ≤ R ≤ 0.091
0.15 ≤ R < 0.91 ±250
0.1 ≤ R ≤ 0.13 400±200
0.047 ≤ R ≤ 0.091
Guaranteed value
Resistor type
Resistance temperature coefficient
(E24)
(E24)
(E24)
(ppm/°C)
±250
400±200
500±300
(E24)
(E24)
(E24)
500±300
JIS C 5201-1 4.5
Load voltage : A
Measuring method : measure upper termination
by 4 proves.
Upper termination
Prove
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
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
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 : 56days
JIS C 5201-1 4.25.1
°C,
Rated voltage
70
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
°C
°C
°C
to +125°C 5cyc
Rev.A 2/4
MCR18
Resistors
zDimensions (Unit : mm)
1
1.6±0.15
No.
1
Resistive element
2
Silver thick film electrode
3
Nickel electrode
4
Sn electrode
5
Alumina substrate
6
Overcoating
Material
0.5±0.25
0.5±0.25
3.2±0.15
2
3
4
5
0.55±0.1
6
zPackaging
Reel Taping
0 2
0 4
0 6
ABD
0 2
0 4
0 6
0 8
C
Label
(Unit: mm)
ABCD
φ180
0
−1.5
φ60
+1
+1.0
9
0
±
φ13
0
EIAJ ET-7200B compliant
0.2
0 8
P
0
P
2
Heat crimp cover/Tape
Thick paper
(Underside paper tape) Chip resistor Square punchout hole
mount
WFEA2B
8.0±0.3 3.5±0.05 1.75±0.1
D
2
P
2
+0.1
4.0±0.1 4.0±0.1 2.0±0.05
φ1.5
0
P
2
φD
2
B
2
A
2
+0.1
1.95
P
−0.05
2
P
2
(Unit: mm)
2
+0.15
3.5
−0.05
T
2
Max. 1.1
E
F
W
T
2
Rev.A 3/4
MCR18
Resistors
zPart No. Explanation
MC 1R
Part No.
Packaging Specifications Code
Part No.
MCR18
Reel (φ180) : JEITA ET-7200B
: Standard product
Resistance tolerance
Code Packaging specifications Reel
J(±5%) F(±1%)
EZH 5,000
8 E Z H J L
Resistance tolerance
F
±
±
J
Paper tape (4mm Pitch)
Special part number
1%
5%
10Ω or less (class F)
L
1Ω or less (class J)
0.1Ω or less
S
φ180mm (7in.)
Nominal resistance
Resistance code, 3 or 4 digits.
Resistance
tolerance
+
Special P/N
FL,FS,JSJL::4 digits
Basic ordering unit(pcs)
Resistance
code
3 digits
Rev.A 4/4
Appendix
No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or
otherwise dispose of the same, no express or implied right or license to practice or commercially
exploit any intellectual property rights or other proprietary rights owned or controlled by
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document are no antiradiation design.
Notes
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level of
reliability and the malfunction of with would directly endanger human life (such as medical instruments,
transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other
safety devices), please be sure to consult with our sales representative in advance.
About Export Control Order in Japan
Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control
Order in Japan.
In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.1
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