Automotive-Grade MC AT Precision Thin Film Chip
Resistors are the perfect choice for most fields of modern
precision electronics where reliability and stability is of major
concern. Typical applications include automotive,
telecommunication, industrial, medical equipment, precision
test and measuring equipment.
• Industrial equipment
METRIC SIZE
INCH:060308051206
METRIC:RR 1608MRR 2012MRR 3216M
TECHNICAL SPECIFICATIONS
DESCRIPTIONMCT 0603 ATMCU 0805 ATMCA 1206 AT
Metric sizeRR 1608MRR 2012MRR 3216M
Resistance range47 Ω to 100 kΩ47 Ω to 100 kΩ47 Ω to 100 kΩ
The power dissipation on the resistor generates a temperature rise against the local ambient, depending on the heat flow support
of the printed-circuit board (thermal resistance). The rated dissipation applies only if the permitted film temperature is not
exceeded. Furthermore, a high level of ambient temperature or of power dissipation may raise the temperature of the solder joint,
hence special solder alloys or board materials may be required to maintain the reliability of the assembly.
These resistors do not feature a limited lifetime when operated within the permissible limits. However, resistance value drift
increasing over operating time may result in exceeding a limit acceptable to the specific application, thereby establishing a
functional lifetime. The designer may estimate the performance of the particular resistor application or set certain load and
temperature limits in order to maintain a desired stability.
MAXIMUM RESISTANCE CHANGE AT RATED DISSIPATION
Operation modeStandardPower
Rated dissipationP
MCT 0603 AT0.100 W0.125 W
70
P
70
MCU 0805 AT0.125 W0.200 W
MCA 1206 AT0.250 W0.400 W
Film temperature125 °C155 °C
Max. resistance change at rated dissipation for
resistance range:
• The rated dissipation applies only if the permitted film temperature is not exceeded. Furthermore, a high level of ambient temperature or of
power dissipation may raise the temperature of the solder joint, hence special solder alloys or boardmaterials may be required to maintain the
reliability of the assembly. Specified power rating above 125 °C requires dedicated heat-sink pads, which depend on boardmaterials.
The given solder pad dimensions reflect the considerations for board design and assembly as outlined e.g. in standards IEC 61188-5-x, or in
publication IPC-7351. They do not guarantee any supposed thermal properties, particularly as these are also strongly influenced by many other
parameters.
Still, the given solder pad dimensions will be found adequate for most general applications, e.g. those referring to “standard operation mode”.
Please note however that applications for “power operation mode” require special considerations for the design of solder pads and adjacent
conductor areas.
Production is strictly controlled and follows an extensive
set of instructions established for reproducibility. A
homogeneous film of special metal alloy is deposited on a
high grade (Al
achieve the desired temperature coefficient. Specially
designed inner contacts are deposited on both sides. A
special laser is used to achieve the target value by smoothly
cutting a meander groove in the resistive layer without
damaging the ceramics. The resistor elements are covered
by a unique protective coating designed for electrical,
mechanical and climatic protection. The terminations receive
a final pure tin on nickel plating.
The result of the determined production is verified by an
extensive testing procedure and optical inspection
performed on 100 % of the individual chip resistors. Only
accepted products are laid directly into the paper tape in
accordance with IEC 60286-3
ASSEMBLY
The resistors are suitable for processing on automatic SMD
assembly systems. They are suitable for automatic soldering
using wave, reflow or vapour phase as shown in
IEC 61760-1
solvents commonly used in the electronics industry,
including alcohols, esters and aqueous solutions. The
suitability of conformal coatings, if applied, shall be qualified
by appropriate means to ensure the long-term stability of the
whole system.
The resistors are RoHS compliant; the pure tin plating
provides compatibility with lead (Pb)-free and
lead-containing soldering processes. Solderability is
specified for 2 years after production or requalification. The
permitted storage time is 20 years. The immunity of the
plating against tin whisker growth has been proven under
extensive testing.
All products comply with the GADSL
CEFIC-EECA-EICTA
hazardous substances. This includes full compliance with
the following directives:
• 2000/53/EC End of Vehicle life Directive (ELV) and
Annex II (ELV II)
• 2002/95/EC Restriction of the use of Hazardous
Substances directive (RoHS)
• 2002/96/EC Waste Electrical and Electronic Equipment
Directive (WEEE)
) ceramic substrate and conditioned to
2O3
(3)
.
(3)
. The encapsulation is resistant to all cleaning
(1)
(2)
list of legal restrictions on
and the
APPROVALS
The resistors are approved within the IECQ-CECC Quality
Assessment System for Electronic Components to the detail
specification EN 140401-801 which refers to EN 60115-1,
EN 140400 and the variety of environmental test procedures
(3)
of the IEC 60068
series. The detail specification refers to
the climatic categories 55/125/56, which relates to the
“standard operation mode” of this datasheet.
Conformity is attested by the use of the CECC Logo () as
the Mark of Conformity on the package label.
Vishay BEYSCHLAG has achieved “Approval of
Manufacturer” in accordance with IEC QC 001002-3,
clause 2. The release certificate for “Technology Approval
Schedule” in accordance with CECC 240001 based on
IEC QC 001002-3, clause 6 is granted for the
Vishay BEYSCHLAG manufacturing process.
The resistors are qualified according to AEC-Q200.
RELATED PRODUCTS
For more information about products with higher operation
temperature please refer to the professional datasheet
document no. 28760.
Chip resistor arrays may be used in sensing applications or
precision amplifiers where close matching between multiple
resistors is necessary. Please refer to the
ACAS AT - Precision datasheet document no. 28770.
Notes
(1)
Global Automotive Declarable Substance List, see www.gadsl.org
(2)
CEFIC (European Chemical Industry Council), EECA (European Electronic Component Manufacturers Association), EICTA (European trade
organisation representing the information and communications technology and consumer electronics), see www.eicta.org
environment policy → chemicals → chemicals for electronics
(3)
The quoted IEC standards are also released as EN standards with the same number and identical contents
For permissible resistance change please refer to table MAXIMUM RESISTANCE CHANGE AT RATED POWER, above
Derating
1
3
A
1
µV/V
Current Noise
Precision Thin Film Chip Resistor
Superior Moisture Resistivity
70
100- 55
Ambient Temperature in °C
125050
Vishay Beyschlag
Standard Mode
Power Mode
155
MCT 0603 AT
MCU 0805 AT
MCA 1206 AT
180
0.1
0.01
100 Ω
Current noise A1 in accordance with IEC 60195
100 kΩ 10 kΩ 1 kΩ 10 Ω
Resistance Value
1 MΩ
R
Current Noise
TESTS AND REQUIREMENTS
All tests are carried out in accordance with the following
specifications:
EN 60115-1, generic specification
EN 140400, sectional specification
EN 140401-801, detail specification
The components are approved in accordance with the
IECQ-CECC-system, where applicable. The following table
contains only the most important tests. For the full test
schedule refer to the documents listed above. The testing
also covers most of the requirements specified by
EIA/IS-703 and JIS-C-5202.
The tests are carried out in accordance with IEC 60068 and
under standard atmospheric conditions in accordance with
IEC 60068-1, 5.3. Climatic category LCT/UCT/56 (rated
temperature range: Lower category temperature, upper
category temperature; damp heat, long term, 56 days) is
valid (LCT = - 55 °C/UCT = 125 °C).
Unless otherwise specified the following values apply:
Temperature: 15 °C to 35 °C
Relative humidity: 45 % to 75 %
Air pressure: 86 kPa to 106 kPa (860 mbar to 1060 mbar).
The components are mounted for testing on boards in
accordance with EN 140400, 2.3.3 unless otherwise
specified.
The requirements stated in the Test Procedures and
Requirements table are based on the required tests and
permitted limits of EN 140401-801. However, some
additional tests and a number of improvements against those
minimum requirements have been included.
www.vishay.com
MCT 0603 AT, MCU 0805 AT, MCA 1206 AT - Precision
Vishay Beyschlag
Precision Thin Film Chip Resistor
Superior Moisture Resistivity
TEST PROCEDURES AND REQUIREMENTS
EN
60115-1
CLAUSE
4.5-Resistance± 0.1 % R
4.8.4.2-
4.25.1-
4.25.3-
4.2478 (Cab)
4.3967 (Cy)
4.23Climatic sequence:
4.23.22 (Ba)dry heat125 °C; 16 h
4.23.330 (Db)damp heat, cyclic
4.23.41 (Aa)cold- 55 °C; 2 h
4.23.513 (M)low air pressure8.5 kPa; 2 h; (25 ± 10) °C
4.23.630 (Db)damp heat, cyclic
4.23.7-DC loadU = ≤ U
-1 (Aa)
4.1914 (Na)
4.13-
4.27-
Note
(1)
According to the detail specification EN 140401-801 the stability class applies to the category temperatures 85 °C and 125 °C and their
respective test conditions.
All product specifications and data are subject to change without notice.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf
(collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein
or in any other disclosure relating to any product.
Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any
information provided herein to the maximum extent permitted by law. The product specifications do not expand or
otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed
therein, which apply to these products.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this
document or by any conduct of Vishay.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless
otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such
applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting
from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding
products designed for such applications.
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