
MCS 0402 AT, MCT 0603 AT, MCU 0805 AT, MCA 1206 AT - Precision
www.vishay.com Vishay Beyschlag
Revision: 21-Jan-13 5Document Number: 28785
For technical questions, contact: thinfilmchip@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
DESCRIPTION
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 (Al2O3) ceramic substrate and conditioned to
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. This
includes full screening for the elimination of products with
potential risk of early field failures (feasible for R 10 ).
Only accepted products are laid directly into the paper tape
in accordance with IEC 60286-3 (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 (3). The encapsulation is resistant to all
cleaning 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 (1) and the
CEFIC-EECA-EICTA (2) list of legal restrictions on
hazardous substances. This includes full compliance with
the following directives:
• 2000/53/EC End of Vehicle life Directive (ELV) and
Annex II (ELV II)
• 2011/65/EU Restriction of the use of Hazardous
Substances directive (RoHS)
• 2002/96/EC Waste Electrical and Electronic Equipment
Directive (WEEE)
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
of the IEC 60068 (3) 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.
The resistors are qualified according to AEC-Q200.
Qualification of the extended ranges is pending.
Vishay BEYSCHLAG has achieved “Approval of
Manufacturer” in accordance with IECQ 03-1. The release
certificate for “Technology Approval Schedule” in
accordance with CECC 240001 based on IECQ 03-3 is
granted for the Vishay BEYSCHLAG manufacturing
process.
RELATED PRODUCTS
For more information about products with higher operation
temperature please refer to the professional datasheet
(www.vishay.com/doc?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 (www.vishay.com/doc?28770).
MC AT Precision is also available with gold termination for
conductive gluing. Please refer to the datasheet
(www.vishay.com/doc?28877).
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/index.php?id=995 issues environment policy chemicals chemicals for electronics.
(3) The quoted IEC standards are also released as EN standards with the same number and identical contents.