Conformal Coated Guide
www.vishay.com
Vishay Sprague
SOLID ELECTROLYTE TANTALUM CAPACITORS
TYPE 194D
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 can in which it will be enclosed.
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.
SnPb or Gold Plated Ni Cathode
End Cap Termination
Encapsulation
SnPb or Gold Plated Ni Anode
End Cap Termination
Cathode
Backfill
Conductive Silver
Epoxy Adhesive
Surface mount designs of “Solid Tantalum” capacitors use
lead frames or lead frameless designs as shown in the
accompanying drawings.
Sintered Tantalum
Pellet
Sponge Teflon
Anode Backfill
MnO2/Carbon/
Silver Coating
TANTALUM CAPACITORS FOR ALL DESIGN
CONSIDERATIONS
TYPE T96
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.
They will typically withstand up to about 10 % of the rated
DC working voltage in a reverse direction. Also important
are their good low temperature performance characteristics
and freedom from corrosive electrolytes.
Intermediate
Fuse
Cathode
Silver
Vishay Sprague patented the original solid electrolyte
capacitors and was the first to market them in 1956. Vishay
Sprague has the broadest line of tantalum capacitors and
has continued its position of leadership in this field. Data
sheets covering the various types and styles of Vishay
Sprague capacitors for consumer and entertainment
electronics, industry, and military applications are available
where detailed performance characteristics must be
specified.
Cathode Termination
(Silver + Ni/Sn or
Ni/SnPb Plating)
MnO2/Carbon/
Silver Coating
Encapsulation
Epoxy Tower/
Sponge Teflon
Anode Termination
(Silver + Ni/Sn or
Ni/SnPb Plating)
Sintered Tantalum
Pellet
TYPE 195D, 591D, 592D / 592W, 594D,
595D, 695D, T95, 14002
Cathode Termination
(Silver + Ni/Sn/Plating)
TYPE T98
Encapsulation
Fuse
Anode Termination
(Silver + Ni/Sn/Plating)
Intermediate
Cathode
Silver
MnO
2 /Carbon/Silver
Coating
Sintered Tantalum
Pellet
Sponge Teflon/Epoxy Tower
Cathode Termination
(Silver + Ni/Sn or
Ni/SnPb Plating)
TYPE 597D / T97 / 13008
MnO2/Carbon/
Silver Coating
Epoxy Tower/
Sponge Teflon
Cathode Termination
Encapsulation
(Silver + Ni/Sn/Plating)
Encapsulation
Anode Termination
(Silver + Ni/Sn/Plating)
Anode Termination
(Silver + Ni/Sn or
Ni/SnPb Plating)
Sintered Tantalum
Pellet
MnO2/Carbon/Silver
Coating
Silver Epoxy
Sponge Teflon/Epoxy Tower
Sintered Tantalum
Pellet
Revision: 17-Jun-2021
Document Number: 40150
2
For technical questions, contact: tantalum@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000