www.vishay.com For technical questions, contact: thinfilmchip@vishay.com Document Number: 28705
194 Revision: 20-Nov-09
MCS 0402, MCT 0603, MCU 0805, MCA 1206 - Professional
Vishay Beyschlag Professional Thin Film Chip Resistors
DESCRIPTION
Production is strictly controlled and follows an extensive
set of instructions established for reproducibility. A
homogeneous film of 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.
For the high and low ohmic range, optimized Cermet
products provide comparable properties. The resistor
elements are covered by a 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 (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. 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) an 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)
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 category 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.
RELATED PRODUCTS
This product family of thin film flat chip resistors is completed
by Zero Ohm Jumpers.
For more information about products with better TCR and
tighter tolerance please refer to the Precision Thin Film
Chip Resistors datasheet document no. 28700.
On request, resistors are available with established
reliability in accordance with EN 140401-801 version E.
Please refer to the special datasheet document no. 28744 for
information on failure rate level, available resistance ranges
and order codes.
Precision chip resistor arrays may be used in voltage
divider applications or precision amplifiers where close
matching between multiple resistors is necessary.
ACAS 0612 chip arrays are specified by the following
datasheets:
•Professional type, document no. 28754
•Precision type, document no. 28751
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