General Purpose Chip Resistors
MCMR Series
Description
The resistors are constructed in a high grade ceramic body (aluminium oxide). Internal metal electrodes are added at each end and connected by a resistive paste that is applied to the top surface
of the substrate. The composition of the paste is adjusted to give the approximate resistance
required and the value is trimmed to within tolerance by laser cutting of this resistive layer.
Features
Applications
•
•
•
•
•
•
•
•
•
High reliability and stability ±1%
Sulfuration resistant
Automotive grade AEC Q-200 compliant
100% CCD inspection
Lead-free
Automotive application
Consumer electrical equipment
EDP, computer application
Telecom application
The resistive layer is covered with a protective coat. Finally, the two external end terminations are added. For ease of
soldering the outer layer of these end terminations is a Tin (lead free) alloy
Laser Trimmed
Protective Layer
Resistive
Element
Marking
Primary Layer
Termination
Alumina substrate
Construction of a Chip-R
Quick Reference Data
Item
General Specification
Series no.
MCMR10
MCMR12
MCMR08
MCMR06
MCMR04
Size code
1210 (3225)
1206 (3216)
0805 (2012)
0603 (1608)
0402 (1005)
Resistance
range
Resistance
tolerance
1Ω to 10MΩ (±5% tolerance), jumper
1Ω to 10MΩ (±1% tolerance)
±1%
E96/E24
TCR (ppm/°C)
R > 1MΩ
10Ω < R ≤ 1MΩ
R ≤ 10Ω
±5%
E24
±1%
E96/E24
±5%
E24
±1%
E96/E24
±5%
E24
±1%
E96/E24
±5%
E24
±1%
E96/E24
±5%
E24
≤ ± 200
≤ ± 100
-200 ~ +400
≤ ± 200
≤ ± 100
-200 ~ +400
≤ ± 200
≤ ± 100
-200 ~ +400
≤ ± 200
≤ ± 100
-200 ~ +400
≤ ± 200
≤ ± 100
-200 ~ +400
Max. dissipation
at Tamb = 70°C
1/2 W
1/4 W
1/8 W
1/10 W
1/16 W
Max.operation
voltage (DC or
RMS)
200V
200V
150V
75V
50V
Max. overload
voltage (DC or
RMS)
400V
400V
300V
150V
100V
Climatic category
(IEC 60068)
55/155/56
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General Purpose Chip Resistors
MCMR Series
Note:
1. This is the maximum voltage that may be continuously supplied to the resistor element, see “IEC publication 60115-8”
2. Maximum operation voltage : So called RCWV (rated continuous working voltage) is determined by
RCWV = √ Rated Power × Resistance Value or maximum RCWV listed above, whichever is lower
3. The resistance of jumper is defined < 0.05Ω
Protective Coat
T
End Termination
Tb
Resistive Layer
Tt
Dimensions (mm)
Ceramic Substrate
Protective Coat
W
L
L
MCMR10
MCMR12
MCMR08
MCMR06
MCMR04
3.1 ±0.1
3.1 ±0.1
2 ±0.1
1.6 ±0.1
1 ±0.05
0.8 ±0.1
0.5 ±0.05
W
2.6 ±0.1
1.6 ±0.1
1.25 ±0.1
T
0.55 ±0.1
0.6 ±0.15
0.5 ±0.15
0.45 ±0.15 0.35 ±0.05
Tb
0.5 ±0.2
0.45 ±0.2
0.4 ±0.2
0.3 ±0.15
0.25 ±0.1
Tt
0.5 ±0.2
0.5 ±0.2
0.4 ±0.2
0.3 ±0.1
0.2 ±0.1
Marking
Size \ Nr. of digit of code\tolerance
±5%
±1%
1210/1206/0805
3-digits marking
4-digits marking
0603 (1608)
3-digits marking
3-digits marking
0402(1005)
NO MARKING
3-digits marking (±5% : 1206, 1210, 0805 & 0603)
Each resistor is marked with a three digits code on the protective coating to designate the nominal resistance value.
Nominal resistance
Description
1.E-24 series
As 0603 WR06X ±5%.
2.E-96 series
The 1st two digit codes are referring to the CODE on the table, the 3rd code is the index
of resistance value :
Y = 10-2, X = 10-1, A = 100, B = 101, C = 102, D = 103, E = 104, F = 105
EX : 17.8Ω = 25X, 178Ω = 25A, 1K78 = 25B
17K8 = 25C, 178K = 25D, 1M78 = 25E
3. Remark
There is no marking for the items are not under E-24 and E-96 series
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General Purpose Chip Resistors
MCMR Series
CODE
R_
value
CODE
R_
value
CODE
R_
Value
CODE
R_
value
CODE
R_
value
CODE
R_
value
CODE
R_
value
CODE
R_
value
01
100
13
133
25
178
37
237
49
316
61
422
73
562
85
750
02
102
14
137
26
182
38
243
50
324
62
432
74
576
86
768
03
105
15
140
27
187
39
249
51
332
63
442
75
590
87
787
04
107
16
143
28
191
40
255
52
340
64
453
76
604
88
806
05
110
17
147
29
196
41
261
53
348
65
464
77
619
89
825
06
113
18
150
30
200
42
267
54
357
66
475
78
634
90
845
07
115
19
154
31
205
43
274
55
365
67
487
79
649
91
866
08
118
20
158
32
210
44
280
56
374
68
499
80
665
92
887
09
121
21
162
33
215
45
287
57
383
69
511
81
681
93
909
10
124
22
165
34
221
46
294
58
392
70
523
82
698
94
931
11
127
23
169
35
226
47
301
59
402
71
536
83
715
95
953
12
130
24
174
36
232
48
309
60
412
72
549
84
732
96
976
4-digits marking (±1% : 1210/1206/0805)
Each resistor is marked with a four digits code on the protective coating to designate the nominal resistance value.
Example
RESISTANCE
3-digits marking (1210, 1206, 0805, 0603 ±5%)
4-digits marking
10Ω
12Ω
100Ω
6800Ω
47000Ω
100
120
101
682
473
10R0
12R0
1000
6801
4702
Functional Description
Product characterization
Standard values of nominal resistance are taken from the E24 series for resistors with a tolerance of ±5%, and E24+E96
series for resistors with a tolerance of ±1%. The values of the E24/E96 series are in accordance with “IEC publication 60063”.
Derating
Rated Power (%)
The power that the resistor can dissipate depends on the operating temperature
Ambient Temperature (°C)
Max. dissipation in percentage of rated power as a function of the ambient temperature
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General Purpose Chip Resistors
MCMR Series
Mounting:
Due to their rectangular shapes and small tolerances, surface mountable resistors are suitable for handling by automatic
placement systems
Chip placement can be on ceramic substrates and printed-circuit boards (PCBs)
Electrical connection to the circuit is by individual soldering condition
The end terminations guarantee a reliable contact
Soldering Condition
The robust construction of chip resistors allows them to be completely immersed in a solder bath of 260°C for 10 seconds.
Therefore, it is possible to mount surface mount resistors on one side of a PCB and other discrete components on the reverse
(mixed PCBs)
Temperature (°C)
Surface mount resistors are tested for solderability at 235°C during 2 seconds. The test condition for no leaching is 260°C
for 30 seconds. Typical examples of soldering processes that provide reliable joints without any damage are given in below.
Time (s)
Infrared soldering profile for Chip Resistors
Catalogue Numbers
The resistors have a catalogue number starting with
MCMR12
Automotive
code
MCMR10 : 1210
MCMR12 : 1206
MCMR08 : 0805
MCMR06 : 0603
MCMR04: 0402
X
472_
Resistance code
±5%, E24: 2
significant digits
Type code
followed by no. of zeros and
X:
a blank 220Ω = 221_
±5%, 1Ω ~ 10MΩ
( “_” means a blank )
±1%, 10Ω ~ 1MΩ
Resistance code
W:
±1%, E
24+E96: 3 significant digits
±1%, < 10Ω;
followed by no. of zeros
>1MΩ
E96: 37.4kΩ = 3742
E24: 220Ω = 2200
J
T
Tolerance Packaging
F : ±1%
code
J : ±5%
T:7
" Reeled
P : Jumper
taping
Q:1
0" Reeled
taping
G:1
3" Reeled
taping
B : Bulk
L
Termination
code
L = Sn base
(lead free)
* Anti-Sulfuration test conditions: H2S 3ppm, 40’C, RH 90%, 1000hrs, criteria: ±1%
MCMR10, MCMR12, MCMR08, MCMR06:
1. Reeled tape packaging : 8mm width paper taping 5000pcs per 7” reel, 10kpcs per 10” reel, 20kpcs per 13” reel.
2. Bulk packaging
: 5000pcs per poly-bag
MCMR04:
1. Reeled tape packaging : 8mm width paper taping 10,000pcs per reel.
2. Bulk packaging
: 10,000pcs per poly-bag
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General Purpose Chip Resistors
MCMR Series
Test and Requirements
Essentially all tests are carried out according to the schedule of IEC publication 115-8, category LCT/UCT/56 (rated temperature range : Lower Category Temperature, Upper Category Temperature; damp heat, long term, 56 days). The testing also
meets the requirements specified by EIA, EIAJ and JIS
The tests are carried out in accordance with IEC publication 68, “Recommended basic climatic and mechanical robustness
testing procedure for electronic components” and under standard atmospheric conditions according to IEC 60068-1, subclause 5.3. Unless otherwise specified, the following value supplied :
Temperature : 15°C to 35°C
Relative humidity : 45% to 75%
Air pressure : 86kPa to 106kPa (860 mbar to 1,060 mbar)
All soldering tests are performed with midly activated flux
Test and Requirements
Test
Electrical Characteristics
JISC5201-1: 1998
Clause 4.8
Procedure / Test Method
- DC resistance values measurement
- Temperature Coefficient of Resistance (T.C.R)
Natural resistance change per change in degree
centigrade
R2 - R1
× 106 (ppm/°C) t1 : 20°C +5°C -1°C
R1 (t2 - t1)
Requirement
Resistance
0Ω
Within the specified tolerance
Refer to “Quick Reference Data”
R1 : Resistance at reference temperature
R2 : Resistance at test temperature
Resistance to soldering
heat (R.S.H)
MIL-STD-202 method 210
Un-mounted chips completely immersed for 10
±1 second in a SAC solder bath at 270°C ±5°C
ΔR/R Max. ± (0.5%+0.05Ω)
No visible damage
Solderability
J-STD-002
a) Bake the sample for 155°C dwell time 4hrs/
solder dipping 235°C/ 5sec.
b) Steam the sample dwell time 1 hour/ solder
dipping 260°C / 7 s
95% coverage minimum, good tinning
No visible damage
Temperature cycling
JESD22
method JA-104
1,000 cycles, -55°C to +155°C, dwell time 5 to
10mins
ΔR/R Max. ± (0.5%+0.05Ω)
No visible damage
< 50mΩ
Moisture Resistance
MIL-STD-202
method 106
65 ±2°C, 80 to 100% RH, 10 cycles, 24 hours /
cycle
ΔR/R Max. ± (0.5%+0.05Ω)
No visible damage
< 50mΩ
Bias Humidity
MIL-STD-202
method 103
1,000 +48/-0 hours; 85°C, 85% RH, 10% of
operation Power
ΔR/R Max. ± (1%+0.05Ω)
No visible damage
< 50mΩ
Operational Life
MIL-STD-202 method 108
1,000 +48/-0 hours; 35% of operation power,
125 ±2°C
ΔR/R Max. ± (1%+0.05 Ω)
No visible damage
< 50mΩ
High Temperature
Exposure
MIL-STD-202 method 108
1,000+48/-0 hours; without load in a temperature ΔR/R Max. ± (1%+0.05 Ω)
chamber controlled 155±3°C
No visible damage
< 50mΩ
Mechanical Shock
MIL-STD-202 method 213
1/2 sine pulse / 1,500 g peak / Velocity 15.4 ft/s
< 50mΩ
Within the specified tolerance
No visible damage
< 50mΩ
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General Purpose Chip Resistors
MCMR Series
Test
Requirement
Procedure / Test Method
Resistance
0Ω
Board Flex
AEC-Q200-005
Resistors mounted on a 90mm glass epoxy resin ΔR/R Max. ± (1%+0.05 Ω)
PCB(FR4), bending once 2mm for 10 sec.
No visible damage
Terminal strength
AEC-Q200-006
Pressurizing force: 1 Kg, Test time: 60±1 sec.
No remarkable damage or removal of
the terminations
Vibration
MIL-STD-202 method 204
Test 5 g’s for 20 minimum, 12 cycles each of
3 orientations
ΔR/R Max. ± (1%+0.05 Ω)
No visible damage
< 50mΩ
Thermal shock
MIL-STD-202 method 107
Test –55 to 155 / dwell time 15 minimum /
maximum transfer time 20 seconds 300 cycles
ΔR/R Max. ± (0.5%+0.05 Ω)
No visible damage
< 50mΩ
ESD
AEC-Q200-002
Test contact 1 kV ( 0.5 kV for 0402 only)
ΔR/R Max. ± (1%+0.05 Ω)
No visible damage
< 50mΩ
< 50mΩ
Test Condition for Jumper (0 Ω)
Item
Power rating at +70°C
MCMR10
MCMR12
MCMR08
MCMR06
MCMR04
1/2W
1/4W
1/8W
1/10W
1/16W
Resistance
Max. 50mΩ
Rated current
3A
2A
1.5A
1A
1A
Peak current
7.5A
5A
3.5A
3A
2A
Operating temperature
-55°C to +155°C
Packaging
Paper Tape specifications (unit :mm)
Series No.
A
B
MCMR10
3.6 ±0.2
3 ±0.2
MCMR12
3.6 ±0.2
2 ±0.2
MCMR08
2.4 ±0.2
1.65 ±0.2
MCMR06
1.9 ±0.2
1.1 ±0.2
MCMR04
1.2 ±0.1
0.7 ±0.1
W
F
E
8 ±0.3
3.5 ±0.2
1.75 ±0.1
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General Purpose Chip Resistors
MCMR Series
Series No.
P1
MCMR10/12/08
4 ±0.1
MCMR06
MCMR04
P0
ØD
T
+0.1
4 ±0.1
1.5 -0.0
2 ±0.1
Max. 1
0.65 ±0.05
0.4 ±0.05
7" Reel dimensions
Symbol
A
B
C
D
(unit : mm)
178 ±2
60 ±1
13 ±0.2
9 ±0.5
Important Notice : This data sheet and its contents (the “Information”) belong to the members of the Premier Farnell group of companies (the “Group”) or are licensed to it. No licence is granted
for the use of it other than for information purposes in connection with the products to which it relates. No licence of any intellectual property rights is granted. The Information is subject to change
without notice and replaces all data sheets previously supplied. The Information supplied is believed to be accurate but the Group assumes no responsibility for its accuracy or completeness, any
error in or omission from it or for any use made of it. Users of this data sheet should check for themselves the Information and the suitability of the products for their purpose and not make any
assumptions based on information included or omitted. Liability for loss or damage resulting from any reliance on the Information or use of it (including liability resulting from negligence or where the
Group was aware of the possibility of such loss or damage arising) is excluded. This will not operate to limit or restrict the Group’s liability for death or personal injury resulting from its negligence.
Multicomp is the registered trademark of the Group. © Premier Farnell Limited 2016.
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