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Document Number: 28725
Revision: 20-Sep-05
For technical questions contact: ff3cresistors@vishay.com
www.vishay.com
59
MBA 0204, MBB 0207, MBE 0414 - Precision
Lead (Pb)-Free Precision Leaded Resistors
Vishay Beyschlag
DESCRIPTION
Production is strictly controlled and follows an extensive set
of
instructions
established
homogeneous film of metal alloy is deposited on a high
grade ceramic body (85 % Al
2
O
3
) and conditioned to achieve
the desired temperature coefficient. Nickel plated steel
termination caps are firmly pressed on the metallised rods. A
special laser is used to achieve the target value by smoothly
cutting a helical groove in the resistive layer without
damaging the ceramics. A further conditioning is applied in
order to stabilise the trimming result. Connecting wires of
electrolytic copper plated with 100 pure tin are welded to the
termination caps. The resistors are covered by protective
coating designed for electrical, mechanical and climatic
protection.The terminations receive a final pure tin on nickel
plating. Four or five colour code rings designate the
resistance value and tolerance in accordance with
IEC 60062
.
for
reproducibility.
A
The result of the determined production is verified by an
extensive testing procedure performed on 100 of the
individual resistors. Only accepted products are stuck
directly on the adhesive tapes in accordance with
IEC 60286-1
.
ASSEMBLY
The resistors are suitable for processing on automatic
insertion equipment and cutting and bending machines.
Excellent solderability is proven, even after extended
storage. They are suitable for automatic soldering using
wave or dipping. The encapsulation is resistant to all
cleaning solvents commonly used in the electronics industry,
including alcohols, esters and aqueous solutions.
The resistors are completely lead (Pb)-free, 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
CEFIC-EECA-EICTA list of legal restrictions on hazardous
substances. This includes full compliance with the following
directives:
comply
with
the
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 Electrical Equipment
Directive (WEEE)
APPROVALS
Where applicable, the resistors are tested in accordance
with
CECC 40101-806
which refers to
EN 60115-1
and
EN
140100
. Approval of conformity is indicated by the CECC
logo on the package label.
Vishay BEYSCHLAG
Manufacturer"
in accordance with
EN 100114-1
.
has
achieved
"Approval of
SPECIALS
On request, resistors are available with established reliability
in accordance with
CECC 40101-806 Version E
. Please
refer to the special data sheet for information on failure rate
level, available resistance ranges and ordering codes.
FUNCTIONAL PERFORMANCE
0.5
1
W
P
Ambient Temperature
100
150
-50
50
0
70
amb
C
0
MBE 0414
MBB 0207
MBA 0204
Derating - Long Term Operation