Capacitor PCB Spacer

Patent metadata

Field	Value
Publication number	US-2016379760-A1
Application number	US-201615188141-A
Country	US
Kind code	A1
Filing date	Jun 21, 2016
Priority date	Jun 24, 2015
Publication date	Dec 29, 2016
Grant date	—

Abstract

An improved capacitor comprising a housing and a wound capacitive couple in the housing wherein the wound capacitive couple comprises an anode with a dielectric thereon, a cathode, an electrolyte between the cathode and the dielectric, an anode lead in electrical contact with the anode and a cathode lead in electrical contact with the cathode. A deck is secured to the housing and encases the wound capacitive couple in the housing. An anode press fit pin is on the deck and in electrical contact with the anode lead wherein the anode press fit pin comprises an anode riser and an anode compression pin extending from the anode riser opposite the deck. A cathode press fit pin is on the deck and in electrical contact with the cathode lead wherein the cathode press fit pin comprises a cathode riser and a cathode compression pin extending from the cathode riser opposite the deck. A spacer is attached to the housing wherein the spacer comprises a central void wherein the anode press fit pin and cathode press fit pin extend through the void and wherein said spacer extends away from the deck.

First claim

1 . A capacitor comprising:
a housing; a wound capacitive couple in said housing wherein said wound capacitive couple comprises:
an anode with a dielectric thereon;
a cathode;
an electrolyte between said cathode and said dielectric;
an anode lead in electrical contact with said anode; and
a cathode lead in electrical contact with said cathode;
a deck secured to said housing and encasing said wound capacitive couple in said housing; an anode press fit pin on said deck and in electrical contact with said anode lead wherein said anode press fit pin comprises an anode riser and an anode compression pin extending from said anode riser opposite said deck; a cathode press fit pin on said deck and in electrical contact with said cathode lead wherein said cathode press fit pin comprises a cathode riser and a cathode compression pin extending from said cathode riser opposite said deck; and a spacer attached to said housing wherein said spacer comprises a central void wherein said anode press fit pin and said cathode press fit pin extend through said void and wherein said spacer extends away from said deck.

2 . The capacitor of claim 1 wherein said spacer comprises a spacer body and a lip extending from said spacer body towards said deck.

3 . The capacitor of claim 2 wherein said lip engages said deck.

4 . The capacitor of claim 1 wherein said spacer extends away from said deck a distance which is no more than extension of said riser away from said deck.

5 . The capacitor of claim 1 further comprising a sleeve encasing a portion of said housing and said spacer.

6 . The capacitor of claim 1 wherein said anode is a valve metal.

7 . The capacitor of claim 6 wherein said valve metal is selected from the group consisting of tantalum, aluminum, niobium, titanium, zirconium, hafnium, alloys of these elements and conductive oxides thereof.

8 . The capacitor of claim 7 wherein said valve metal is aluminum.

9 . The capacitor of claim 1 wherein said electrolyte comprises at least one material selected from the group consisting of solid electrolyte and liquid electrolyte.

10 . The capacitor of claim 9 wherein said solid electrolyte is selected from the group consisting of manganese dioxide and a conductive polymer.

11 . The capacitor of claim 10 wherein said conductive polymer is a 3,4-polyethylenethiophene.

12 . An electronic device comprising the capacitor of claim 1 .

Assignees

• Kemet Electronics Corp

Inventors

• Wright Mark
• Candy Gavin

Classifications

• H01G2/103

  Sealings, e.g. for lead-in wires; Covers · CPC title

• H01G9/035

  Liquid electrolytes, e.g. impregnating materials (H01G11/54 takes precedence) · CPC title

• H01G9/08 Primary

  Housing; Encapsulation · CPC title

• H01G9/151

  with wound foil electrodes · CPC title

• H01G9/032

  Inorganic semiconducting electrolytes, e.g. MnO2 · CPC title