General Purpose Chip Resistors
Anti-Sulfuration
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Features:
•High reliability and stability ±1%
•Sulfuration resistant 1,000 ppm
•Automotive grade AEC Q-200 compliant
•100% CCD inspection
•Lead free products
Applications:
Automotive application
Consumer electrical equipment
EDP, Computer application
Telecom application
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 extra protective metal film is added onto top
side electrodes to protect termination from sulfuration. 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
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
Primary Layer
Termination
Protective Layer
Marking
Alumina Substrate
Resistive Element
Figure 1. Construction of a Chip-R
Item General Specification
Series No. MCSR12 MCSR08 MCSR06 MCSR04
Size code 1206 (3216) 0805 (2012) 0603 (1608) 0402 (1005)
Resistance Range 1 Ωto 0 MΩ(±5% tolerance), Jumper
1 Ω to10 MΩ(±1% tolerance)
Resistance Tolerance ±1%
E96/E24
±5%
E24
±1%
E96/E24
±5%
E24
±1%
E96/E24
±5%
E24
±1%
E96/E24
±5%
E24
TCR (ppm/°C)
R > 1 MΩ
10 Ω< R ≤ 1 MΩ
R ≤10 Ω
≤±200
≤±100
-200 to +400
≤±200
≤±100
-200 to +400
≤±200
≤±100
-200 to +400
≤±200
≤±100
-200 to +400
Maximum Dissipation at
Tamb = 70°C 1/4 W 1/8 W 1/10 W 1/16 W
Maximum Operation Voltage
(DC or RMS) 200 V 150 V 75 V 50 V
Maximum Overload Voltage
(DC or RMS) 400 V 300 V 150 V 100 V
Climatic category (IEC 60068) 55/155/56
Quick Reference Data
General Purpose Chip Resistors
Anti-Sulfuration
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Note :
1. This is the maximum voltage that may be continuously supplied to the resistor element, see “IEC publication 60115-8”
2. Max. 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 < 0.05 Ω
MCSR12 MCSR08 MCSR06 MCSR04
L3.1 ± 0.1 2 ± 0.1 1.6 ± 0.1 1 ± 0.05
W1.6 ± 0.1 1.25 ± 0.1 0.8 ± 0.1 0.5 ± 0.05
T0.6 ± 0.15 0.5 ± 0.15 0.45 ± 0.15 0.35 ± 0.05
Tb 0.45 ± 0.2 0.4 ± 0.2 0.3 ± 0.15 0.25 ± 0.1
Tt 0.5 ± 0.2 0.4 ± 0.2 0.3 ± 0.1 0.2 ± 0.1
Dimensions (unit : mm)
Protective Coat
End Termination
Resistive Layer
Ceramic Substrate
Protective Coat
Marking
Size \ Nr. of Digit of Code \ Tolerance ±5% ±1%
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, 0805 and 0603)
Each resistor is marked with a three digits code on the protective coating to designate the nominal resistance value
General Purpose Chip Resistors
Anti-Sulfuration
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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 : 17.8 Ω = 25X, 178 Ω = 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
Code R_value Code R_value Code R_value Code R_value Code R_value Code R_value Code R_value Code R_value
1 100 13 133 25 178 37 237 49 316 61 422 73 562 85 750
2 102 14 137 26 182 38 243 50 324 62 432 74 576 86 768
3 105 15 140 27 187 39 249 51 332 63 442 75 590 87 787
4 107 16 143 28 191 40 255 52 340 64 453 76 604 88 806
5110 17 147 29 196 41 261 53 348 65 464 77 619 89 825
6113 18 150 30 200 42 267 54 357 66 475 78 634 90 845
7115 19 154 31 205 43 274 55 365 67 487 79 649 91 866
8118 20 158 32 210 44 280 56 374 68 499 80 665 92 887
9 121 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
3-Digits Marking (1% : 0603)
4-Digits Marking (±1% : 1206 / 0805)
Each resistor is marked with a three digits code on the protective coating to designate the nominal resistance value
Resistance 10 Ω12 Ω100 Ω6,800 Ω47,000 Ω
3-digits marking(1206, 0805, 0603 ±5% ) 100 120 101 682 473
4-digits marking 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”
Example
General Purpose Chip Resistors
Anti-Sulfuration
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Derating
The power that the resistor can dissipate depends on the operating temperature; see Fig. 2
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)
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 Fig 3
Rated Power (%)
Ambient Temperature (°C)
Fig 2 Maximum dissipation in percentage of rated power as a
function of the ambient temperature
Temperature (°C)
Time (s)
Fig 3. Infrared soldering profile for Chip Resistors
General Purpose Chip Resistors
Anti-Sulfuration
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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, sub-clause 5.3. Unless
otherwise specified, the following value supplied :
Temperature : 15 to 35°C
Relative humidity : 45 to 75%
Air pressure : 86kPa to 106 kPa (860 mbar to 1,060 mbar)
All soldering tests are performed with midly activated flux
Test Procedure / Test Method
Requirement
Resistor 0 ΩΩ
Electrical Characteristics
JISC5201-1: 1998
Clause 4.8
- DC resistance values measurement
- Temperature Coefficient of Resistance (T.C.R)
Natural resistance change per change in degree
centigrade
R2 - R1
R1(t2- t1)
R1: Resistance at reference temperature
R2: Resistance at test temperature
Within the specified tolerance
Refer to “Quick Reference
Data”
Resistance to soldering
heat (R.S.H)
MIL-STD-202
method 210
Un-mounted chips completely immersed for 10
±1second in a SAC solder bath at 270°C ±5°C ∆∆R/R maximum ± (0.5%+0.05 Ω)
No visible damage < 50 mΩ
Solderability
J-STD-002
a) Bake the sample for 155°C dwell time 4
hours / solder dipping 235°C / 5 s
b) Steam the sample dwell time 1 hour / solder
dipping 215°C / 5 s
c) 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
10 mins
∆R/R maximum ± (0.5%+0.05 Ω)
No visible damage < 50 mΩ
Moisture Resistance
MIL-STD-202
method 106
65 ±2°C, 80 to 100% RH, 10 cycles, 24 hours /
cycle
∆R/R maximum ± (0.5%+0.05 Ω)
No visible damage < 50 mΩ
Bias Humidity
MIL-STD-202
method 103
1,000 + 48/-0 hours; 85°C, 85% RH, 10% of
operation Power
∆R/R maximum ± (1%+0.05 Ω)
No visible damage < 50 mΩ
Operational Life
MIL-STD-202
method 108
1,000 + 48/-0 hours; 35% of operation power,
125 ±2°C
∆R/R maximum ± (1%+0.05 Ω)
No visible damage < 50 mΩ
High Temperature
Exposure
MIL-STD-202
method 108
1,000 + 48/-0 hours; without load in a
temperature chamber controlled 155 ±3°C
∆R/R maximum ± (1%+0.05 ΩΩ)
No visible damage < 50 mΩ
× 106(ppm/°C) t1: 20°C+5°C-1°C
General Purpose Chip Resistors
Anti-Sulfuration
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Test Procedure / Test Method
Requirements
Resistor 0 ΩΩ
Mechanical Shock
MIL-STD-202
method 213
1/2 sine pulse / 1,500 g peak / Velocity 15.4 ft/s Within the specified tolerance
No visible damage < 50 mΩ
Board Flex
AEC-Q200-005
Resistors mounted on a 90 mm glass epoxy
resin PCB (FR4), bending once 2 mm for 10 s
∆R/R maximum ± (1.0%+0.05 Ω)
No visible damage < 50 mΩ
Terminal strength
AEC-Q200-006 Pressurizing force: 1 Kg, Test time: 60±1 s 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
∆R/R maximum ± (1.0%+0.05 Ω)
No visible damage < 50 mΩ
Thermal shock
MIL-STD-202
method 107
Test –55 to 155 / dwell time 15minimum /
maximum transfer time 20 seconds 300 cycles
∆R/R maximum ± (0.5%+0.05 Ω)
No visible damage < 50 mΩ
ESD
AEC-Q200-002 Test contact 1 KV ( 0.5 KV for 0402 only) ∆R/R maximum ± (1%+0.05 Ω)
No visible damage < 50 mΩ
Test Condition for Jumper (0 ΩΩ)
Item MCSR12 MCSR08 MCSR06 MCSR04
Power rating at 70°C 1/4 W 1/8 W 1/10 W 1/16 W
Resistance Maximum 50 mΩ
Rated current 2 A 1.5 A 1 A 1 A
Peak current 5 A 3.5A 3 A 2 A
Operating temperature -55 to +155°C
Part Number Explanation:
MC
Automotive
Code
SR12
Type Code
X
Packaging
Code
T
Termination
Code
L
J
Tolerance
Resistance Code
472
General Purpose Chip Resistors
Anti-Sulfuration
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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 plc 2011.
* Anti-Sulfur test conditions : H2S 1,000 ppm, 25°C, RH 90%, 720 hours, acceptance criteria : +/-1%
MCSR12, MCSR08, MCSR06:
1. Reeled tape packaging : 8 mm width paper taping 5,000 pieces per 7” reel, 10k pieces per 10” reel, 20k pieces per 13” reel
2. Bulk packaging : 5,000 pieces per poly-bag
MCSR04:
1. Reeled tape packaging : 8 mm width paper taping 10,000 pieces per reel
2. Bulk packaging : 10,000 pieces per poly-bag
Automotive Code : MCSR12 : 1206, MCSR08 : 0805, MCSR06 : 0603 and MCSR04 : 0402
Type Code : X : ±5%, 1 Ωto 10 MΩ, ±1%, < 10 Ω; > 1 MΩ W : ±1%, < 10 Ω; > 1 MΩ
Resistance Code : ±5%, E24 : 2 significant digits followed by no. of zeros and a blank
200 Ω= 221_ (“_” means a blank)
: ±1%, E24+E96 : 3 significant digits followed by no. of zeros
E96 : 37.4 KΩ= 3,742
E24 : 200 Ω= 2,200
Tolerance : F : ±1%, J : ±5% and P : Jumper
Packaging Code : T : 7” Reeled taping
Termination Code : L : Sn base (lead free)
