CMB0207 Datasheet, PDF (4/7 Pages) Vishay Siliconix – High Pulse Load MELF Resistor

CMB 0207
Vishay Beyschlag
High Pulse Load MELF Resistor
DESCRIPTION
Production of the CMB 0207 speciality MELF resistor is
strictly controlled and follows an extensive set of instructions
established for reproducibility. A homogeneous and dense
carbon film is deposited on a high grade ceramic body
(96 % Al₂O₃). Nickel plated steel termination caps are firmly
pressed on the coated rods. Products with a resistance of
15 Ω or lower are made without trimming, whereas a special
laser is used to achieve a target value of 16 Ω or above
by smoothly cutting a helical groove in the resistive layer
without damaging the ceramics. 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. Four color code rings
designate the resistance value and tolerance in accordance
with IEC 60 062³⁾.
The result of the determined production is verified by an
extensive testing procedure performed on 100 % of the
individual resistors. Only accepted products are laid directly
into the blister tape in accordance with IEC 60 286-3³⁾.
APPROVALS
Where applicable the resistors are tested in accordance with
EN 140401-803 which refers to EN 60115-1, EN 140400 and
the variety of environmental test procedures of the
IEC 60068³⁾ series.
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.
Note
3. The quoted IEC standards are also released as EN standards with
the same number and identical contents.
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 61760-1³⁾. Excellent solderability is proven, even after
extended storage in excess of 10 years. 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
soldering processes. The immunity of the plating against tin
whisker growth has been proven under extensive testing.
All products comply with the GADSL¹⁾ and the CEFIC-
EECA-EICTA²⁾ 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)
• 2002/95/EC Restriction of the use of Hazardous
Substances Directive (RoHS)
• 2002/96/EC Waste Electrical and Electronic Equipment
Directive (WEEE)
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 -> issues -> environment policy -> chemicals ->
chemicals for electronics
www.vishay.com
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For technical questions, contact: [e-mail]
Document Number: 28755
Revision: 31-Oct-06