www.vishay.com For technical questions, contact: filmresistors.thinfilmchip@vishay.com Document Number: 28700
212 Revision: 16-Jul-08
MCS 0402, MCT 0603, MCU 0805, MCA 1206 - Precision
Vishay Beyschlag Precision Flat Chip Resistors
DESCRIPTION
Production is strictly controlled and follows an extensive
set of instructions established for reproducibility. A homo-
geneous film of metal alloy is deposited on a high grade Al203
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 fine trimming the
resistive layer without damaging the ceramics. A further
conditioning is applied in order to stabilize the trimming
result. The resistor elements are covered by a blue
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 EN 60286-3.
ASSEMBLY
The resistors are suitable for processing on automatic SMD
assembly systems and for automatic soldering using wave,
reflow or vapour phase. 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. The immunity of the
plating against tin whisker growth has been proven under
extensive testing. All products comply with the
CEFIC-EECA-EICTA list of legal restrictions on hazardous
substances.
This includes full compatibility with the following directives:
•2000/53/EC End of Vehicle life Directive (ELV)
•
2000/53/EC Annex II to End of Vehicle Life Directive (ELV II)
•2002/95/EC Restriction of the use of Hazardous
Substances Directive (RoHS)
•2002/96/EC Waste Electrical and Electronic Equipment
Directive (WEEE)
Solderability is specified for 2 years after production or
re-qualification. The permitted storage time is 20 years.
APPROVALS
The resistors are tested in accordance with EN 140401-801
(superseding CECC 40401-801) which refers to EN 60115-1
and EN 140400. Approval of conformity is indicated by the
CECC logo on the package label.
Vishay BEYSCHLAG has achieved "Approval of
Manufacturer" in accordance with EN 100114-1. The
release certificate for "Technology Approval Schedule" in
accordance with CECC 240001 based on EN 100114-6 is
granted for the Vishay BEYSCHLAG manufacturing process.
SPECIALS
On request, resistors are available with established reliability
in accordance with EN 140 401-801 Version E. Please refer
to the special data sheet for information on failure rate level,
available resistance ranges and order codes.