Datasheet

Molded Guide
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Vishay Polytech
Revision: 11-Apr-16
2
Document Number: 40218
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SOLID ELECTROLYTE TANTALUM CAPACITORS
Solid electrolyte capacitors contain manganese dioxide,
which is formed on the tantalum pentoxide dielectric layer
by impregnating the pellet with a solution of manganous
nitrate. The pellet is then heated in an oven, and the
manganous nitrate is converted to manganese dioxide.
The pellet is next coated with graphite, followed by a layer
of metallic silver, which provides a conductive surface
between the pellet and the leadframe.
Molded chip tantalum capacitor encases the element in
plastic resins, such as epoxy materials. After assembly, the
capacitors are tested and inspected to assure long life and
reliability. It offers excellent reliability and high stability for
consumer and commercial electronics with the added
feature of low cost.
Surface mount designs of “Solid Tantalum” capacitors use
lead frames as shown in the accompanying drawings.
TANTALUM CAPACITORS FOR ALL DESIGN
CONSIDERATIONS
Solid electrolyte designs are the least expensive for a given
rating and are used in many applications where their very
small size for a given unit of capacitance is of importance.
Also important are their good low temperature performance
characteristics and freedom from corrosive electrolytes.
Datasheets covering the various types and styles of
capacitors for consumer and entertainment electronics and
industry applications are available where detailed
performance characteristics must be specified.
MOLDED CHIP CAPACITOR, ALL TYPES EXCEPT TMCTX / TMCJ / NMC
MOLDED CHIP CAPACITOR WITH BUILT-IN FUSE, TYPE TMCTX
MOLDED CHIP CAPACITOR 0603 SIZE, TYPE TMCJ
Sintered tantalumMnO
2
Carbon / silver coating
Epoxy encapsulation
Tantalum wire
Supporter
Silver adhesive
Solderable cathode termination
Solderable anode termination
Leadframe
Tantalum wire
Epoxy encapsulation
Leadframe
Solderable anode terminationSolderable cathode termination
Fusible ribbon
Carbon / silver coating
Sintered tantalum
Supporter
Silver adhesiveMnO
2
Epoxy encapsulation
Solderable anode termination
Solderable cathode termination
Leadframe
Silver adhesive
Sintered tantalumMnO
2
Carbon / silver coating
Tantalum wire