CMA0204 Datasheet, PDF (3/8 Pages) Vishay Siliconix – High Pulse Load MELF Resistor

High Pulse Load MELF Resistor
CMA 0204
Vishay Beyschlag
DESCRIPTION
Production of the CMA 0204 speciality MELF resistors with
advanced pulse load capability 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 (85 % Al₂O₃).
Nickel plated steel termination caps are firmly pressed on
the coated 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. 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 colour code rings
designate the resistance value and tolerance in accordance
with IEC 60 062.
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 60 286-3.
ASSEMBLY
The resistors are suitable for processing on automatic SMD
assembly systems. They are suitable for automatic soldering
using wave, reflow or vapour phase. 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
CEFIC-EECA-EICTA list of legal restrictions on hazardous
substances. This includes full compatibility with European
RoHS directive.
APPROVALS
Where applicable the resistors are tested in accordance with
EN 140401-803 (superseding CECC 40401-803) which
refers to EN 60115-1, EN 140400 and the variety of
enviromental text procedures of the IEC 60068 series.
Vishay BEYSCHLAG has achieved "Approval of
Manufacturer" in accordance with EN 100 114-1. 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.
Document Number: 28717
Revision: 27-Feb-04
For technical questions contact: [e-mail]
www.vishay.com
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