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Publication numberUS3659243 A
Publication typeGrant
Publication dateApr 25, 1972
Filing dateJan 21, 1970
Priority dateOct 24, 1969
Also published asDE2051228A1, DE2051228B2, DE2051228C3
Publication numberUS 3659243 A, US 3659243A, US-A-3659243, US3659243 A, US3659243A
InventorsGlenn Harlan Gluntz
Original AssigneeAmp Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Electrical connectors
US 3659243 A
Abstract
An electrical connector of the receptacle type comprises a mounting panel having electrical posts secured therein at the spaced locations. Spring members disposed on sections of the posts extending outwardly from one surface of the panel. Means provided by the sections of the posts and the spring members securing the spring members on the sections. Legs of the spring members biased against contact surfaces of the post sections to define receptacle means and outer ends of the post sections and legs being chamfered to define lead-in means to facilitate movement of contact members within the receptacle means. Maintaining means provided by the spring members for maintaining other legs of the spring members in secured engagement with the post sections and to guide movement of the first-mentioned legs relative to the post sections.
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Description  (OCR text may contain errors)

United States Patent Gluntz [4 1 Apr. 25, 1972 s41 ELECTRICAL CONNECTORS FOREIGN PATENTS OR APPLICATIONS [72] inventor: Glenn Harlan Gluntz, Harrisburg, Pa. 1,474,151 2/1967 France ..339/1 76 M [73] Assignee: AMP incorporated, Harrisburg, Pa. OTHER PUBLICATIONS [22] Filed: Jan. 21, 1970 [21] Appl. No.: 4,662

Related U.S. Application Data [63] Continuation-impart of Ser. No. 869,079, Oct. 24,

1969, abandoned.

[52] U.S. Cl. ..339/l92 R, 339/258 R [51] Int. Cl ..H0lr 33/76 [58] Field oiSearch ..339/l7C, 17CF, 95, 97,32,

339/176, 256, 258, 259, 262, 255 R, 255 A, 255 B,

[56] References Cited UNITED STATES PATENTS 3,126,089 3/1964 Hugli ..85/8.6 2,709,794 5/1955 Johansson ..339/258 3,120,990 2/1964 Kinkaid .339/259 F 3,273,102 9/1966 Cobaugh.... ..339/l8 3,283,289 11/1966 Cobaugh.... ....339/256 R 3.315.219 4/1967 Brinser et al... ....339/198 3.32.3,099 5/1967 Spera 339/192 R 3,369,212 2/1968 Coldren et al. ..339/32 E. C. Uberbacher, ,lBM Tech. Disc. Bulletin, Dual Contact-SLT Pin," Vol. 7 No. 1, page 8,.lune 1964 Primary Examiner-Marvin A. Champion Assistant Examiner-Lawrence .l. Staab Attorney-Curtis, Morris and Safford, William J. Keating, Frederick W. Rating, Adrian .1. La Rue, Jay L. Seitchik, John P. Vandenburg and Ronald D. Grefe [57] ABSTRACT An electrical connector of the receptacle type comprises a mounting panel having electrical posts secured therein at the spaced locations. Spring members disposed on sections of the posts extending outwardly from one surface of the panel. Means provided by the sections of the posts and the spring members securing the spring members on the sections. Legs of the spring members biased against contact surfaces of the post sections to define receptacle means and outer ends of the post sections and legs being chamfered to define lead-in means to facilitate movement of contact members within the receptacle means. Maintaining means provided by the spring members for maintaining other legs of the spring members in secured engagement with the post sections and to guide movement of the first-mentioned legs relative to the post sections.

17 Claims, 22 Drawing Figures PATENTEBAPRZS I972 3,659,243 saw 10; 5

INVENTOR G ENN HARLAN LUNTZ BY PATENTEDAPRZS I972 3, 659, 243

SHEET 2 5 INVENTOR GLENN HARLAN GLUNTZ PATENTEDAPRZBIQYE 8.659.243

j so @5757 q, /A GLENN HARLAN GLUNTZ i I Ih BY PATENTEmPRzsm v K 3,659,243 SHEETSDFS This application is a continuation-in-part of application Ser. No. 869,079, filed Oct. 24, 1969, and now abandoned.

This invention relates to electrical connectors and more particularly to electrical connectors for making electrical connection with leads of a microelectronic circuit member.

In the field of microelectronic circuitry such as, for example, integrated circuits and large scale integrated circuits, leads extending outwardly therefrom have to be connected with other circuitry to formulate a complete circuit arrangement. In view of the smallness of this microelectronic circuitry, connection of the leads thereof to other circuitry has been a problem, and solving of the connection problem for these circuits has been of significant importance since the effective use of these circuits is paramount in'present and future electronic circuit capabilities for without proper connection of microelectronic circuitry, improper operation thereof will result.

An object of the present invention is to provide electrical receptacle means insulatingly spaced in parallel rows on a mounting panel for electrical connection with leads of microelectronic circuit means.

Another object is the provision of electrical receptacle means for leads of .microelectronic circuit means which include posts secured in a mounting panel and having sections extending outwardly from one surface of the mounting panel on which spring means is mounted.

A further object is to provide chamfered areas on the post sections and the spring means defining lead-in means for leading leads of the microelectronic circuit means into the receptacle means.

An additional object is the provision of wing means on the spring means to maintain movable sections of the spring means in alignment with the post sections.

Still a further object is to provide means on the spring means for preventing rotation or movement around the post sections.

A still additional object is the provision of housing means housing the receptacle means individually or in numbers.

Still another object is to provide other sections of the posts defining conductor-engaging sections for having connected therewith conductors in a point-to-point wiring scheme.

A further object of the invention is to provide an improved method of assembling electrical connecting devices to terminal posts and means for accomplishing such assembling methods.

Other objects and attainments of the present invention will become apparent to those skilled in the art upon a reading of the following detailed description when taken in conjunction with the drawings in which there are shown and described illustrative embodiments of the invention; it is to be understood, however, that these embodiments are not intended to be exhaustive nor limiting of the invention but are given for purposes of illustration in order that others skilled in the art may fully understand the invention and the principles thereof and the manner of applying it in practical use so that they may modify it in various forms, each as may be best suited to the conditions of a particular use.

In the drawings:

FIG. 1 is a part perspective view of an electrical connector with part of a microelectronic circuit means exploded therefrom in phantom;

FIG. 2 is a cross-sectional view of an electrical connector of FIG. 1 with housing means in position thereon;

FIG. 3 is a perspective view of spring means which is one of the elements of the receptacle means;

FIG. 4 is an alternative embodiment of a spring means;

FIG. 5 is another embodiment of the spring means;

FIG. 6 is a perspective view of a further embodiment of the spring means in position on a spring-receiving section of a post means;

FIG. 7 is a perspective view of still another embodiment of the spring means;

FIG. 8 is a perspective view of still a further embodiment of the spring means;

FIG. 9 is a perspective view of an additional embodiment of the spring means;

FIG. 10 is a cross-sectional view of FIG. 9 with the spring means in position on a spring-receiving section of a post means;

FIG. 11 is an exploded and perspective view of still another embodiment of the electrical connector and individual hous- 0 ing means therefor; and

FIG. 12 is a cross-sectional view through the electrical connector and housing of FIG. 11;

FIGS. 13 and 14 are fragmentary perspective views illustrating the manner in which connectors in accordance with the invention can be mounted on terminal posts;

FIG. 15 is a view illustrating the manner in which the carrier strip is removed from a plurality of connectors after they have been assembled to the terminal posts of a panel board;

FIG. 16 is a view similar to FIG. 13 but illustrating the manner in which connectors in accordance with the invention can be assembled to a printed circuit board on closely spaced centers;

FIG. 17 is a perspective view of a hand tool for assembling closely spaced connectors, as shown in FIG. 16, to the terminal posts of a printed circuit board;

FIG. 18 is a side view of the tool of FIG. 17;

FIG. 19 is a side view of the tool showing the jaws in their closed conditions with a strip of terminals gripped between the aws;

FIG. 19A is an enlarged side view of the left-hand end of the tool as shown in FIG. 19;

FIG. 20 is a fragmentary frontal view of the jaw portions of the tool of FIG. 17;

FIG. 21 is a view taken along the lines 2l2l of FIG. 19A.

Turning now to FIGS. 1 through 3, metallic posts 1 are force fitted into openings within dielectric mounting panel 2 in rows and spaced from each other corresponding to the spaced leads 3 of microelectronic circuit means 4 defining an integrated circuit IC, a medium scale integrated circuit MS! or a large scale integrated circuit LS1.

Posts 1 have spring-receiving sections 5 which are provided with beveled surfaces 6 and projections 7. A corrugated area 8 is provided on the inner surface of spring-receiving sections 5.

Spring means 9 is stamped and formed from a suitable metal having desirable spring characteristics and it includes an oblong opening 10 having a width to enable the spring means to be inserted onto spring-receiving sections 5 therethrough until bight 11 is disposed adjacent the upper surface of panel 2. The width of opening 10 is slightly smaller than the width of section 5 so that opposing surfaces of opening 10 snugly engage opposite sides of section 5. In order to facilitate the movement of spring means 9 onto section 5, a slit 12 is provided in bight 11 to permit opening 10 to be opened further if opening 10 is not wide enough or section 5 is too wide so that no deformation to opening 10 is done when spring means 9 is mounted on section 5. Slit 12 therefore provides an antioverstress means and allows for manufacturing tolerances.

I Spring means 9 includes a stationary member 13 and a movable member 14. Stationary member 13 has its free end disposed in alignment with projection 7 and movable member 14 is springably engaged with section 5 along corrugated area 8 to thereby maintain stationary member 13 in engagement with section 5 and the free end in alignment with projection 7 and this action secures the spring means 9 in position on section 5. Outer end 15 of movable member 14 has an arcuate configuration and it extends angularly away from beveled surface 6 of section 5 so that beveled surface 6 and outer end 15 provide an entrance to the receptacle defined by section 5 and spring means 9 to receive a lead 3 of microelectronic circuit means 4 therein and the configuration of this entrance facilitates the guiding of leads 3 into the receptacles.

An inwardly directed dimple 16 is provided in end 15 opposite corrugated area 8 and dimple 16 and corrugated area 8 define irregular contact-engaging surfaces for electrical engagement with leads 3 to enhance the electrical engagement therebetween. An elongated depression 17 is formed in movable member 14 to strengthen it and provide the desirable spring characteristics thereto. Wings 18 extend outwardly from movable member 14 and along corresponding sides of spring-receiving section to maintain the contact-engaging area of movable member 14 in alignment with the contact-engaging area of section 5 during the relative movement therebetween. Arcuate depressions 19 are disposed in wings 18 and they can engage stationary member 13 and projection 7 to limit the movement of movable member 14 relative to section 5 thereby providing an anti-overstress means to prevent overstressing movable member 14. Beveled areas are provided in the inside surfaces of wings 18 to assist in guiding leads 3 into the receptacle means. The wings may be tapered from an outer to inner direction thereby replacing beveled areas 20 to assist in the guiding of the leads into the receptacle means. 7

After metallic posts 1 have been secured in mounting panel 2 in accordance with a predetermined array, spring means 9 are mounted on spring-receiving sections 5 thereby forming electrical receptacle means to electrically receive leads 3 of microelectronic circuit means 4. Posts 1 can have a configuration suitable for being connected to circuit paths on panel 2 by conventional flow-soldering techniques or they can have the necessary configurations for having connected thereto pointto-point wiring via conventional connection-making means.

FIGS. 13-15 illustrate a preferred method of assembling connectors in accordance with the invention to the contactengaging areas 5 of the terminal posts mounted in the panel 2, The connectors 9 are manufactured in the form of a continuous ladder strip comprising a carrier strip 43 having connectors 9 integral therewith and extending laterally therefrom at spaced-apart intervals. Conventional pilot holes 47 are provided in the ladder strip for feeding the strip through the die as is common practice in the stamping and forming art. It should be mentioned that the spacingbetween adjacent connectors 9 of the strip shown in FIG. 13 will be precisely predetermined as will the spacing between adjacent pilot holes. Die stamping of electrical connecting devices is a precise and exacting art and extremely close tolerances are commonly held on the parts as a matter of routine in order to ensure consistently high quality and performance.

In accordance with the assembling method of the instant invention, the sections 45 of the connecting devices 9, by means of which they are joined to the carrier strip, are scored or otherwise weakened so that the individual connectors can be broken from the carrier strip 43. The scoring can take the form of a notch extending parallel to the edge of the carrier strip and having a depth sufficient to permit the carrier strip to be cleanly broken from the connectors. When it is desired to assemble a group of connectors 9 to the upper post sections 5 of the terminal posts, a length of terminal strip is cut having a number of connectors thereon which is equal to the number of posts to which connectors are to be assembled. It will be understood that the posts 5 are located in the panel board on centers equal to the spacing between adjacent connectors 9 of the terminal strip. The strip is simply moved downwardly as illustrated in FIGS. 13 and 14 until the post portions 5 extend through the connectorsssince the connectors are accurately.

located on the strip, and since the posts are accurately located in the panel board, the terminals can easily be aligned with the terminal posts as indicated. After the connectors have been assembled to the posts, the carrier strip 43 is simply bent laterally until the connecting sections between the terminals or connectors in the carrier strip fractures as shown in FIG. 15.

FIG. 16 shows a modification which permits the assembly of connecting devices 9 to terminal posts which are located on closely spaced centers, the spacing between adjacent posts in FIG. 16 being one-half the spacing between the posts shown in FIG. 13. Where the spacing is as in FIG. 16, two strips of terminals 43, 43 are positioned against each other with the connecting devices interdigitated and with the carrier strips against each other. The assembly procedure is as described above; the two strips of terminals are simply moved downwardly until the connecting devices are assembled to the terminal posts and the carrier strips 43, 43 are then broken away from the connecting devices.

The assembly operations shown in FIGS. 13-16 can be carried out manually although it is desirable to use a tool or applicator for this operation. FIG. 17 shows a simple hand tool particularly designed to assemble the connecting devices extending from two terminal strips to closely spaced terminal posts as shown in FIG. 16. This tool 49 has crossed handles 51, 53 which are pivoted together by a pin 55. The forward portions of the handles 53, 57 are flat and platelike, the forward portion 53 of the handle 51 extending beyond the portion 57 of the other handle and having obliquely upwardly directed teeth 55 on its end. These teeth are spaced apart by a distance equal to one-half of the spacing between adjacent connectors 9 of the terminal strip and the gaps between adjacent teeth have a width which is substantially equal to, and slightly greater than, the distance between the external surfaces of the Wings 18 of the connecting devices 9. By virtue of these dimensions, two superimposed strips can be positioned on the surface of the jaw portions 53 with the wing portions of the connectors held between adjacent teeth 55. The connectors will then be spaced apart by a distance substantially equal to the spacing between adjacent posts on the panel 2. The jaw 57 has a channel 59 on its underside, which is wider than the carrier strip 43. The jaws do not grip the strips tightly when the handles are closed so that both strips 43, 43 can move laterally by a slightamount to permit the terminals to align themselves precisely with the posts while they are being assembled to the posts.

In order to facilitate the removal of the carrier strips from the connectors which have been assembled to the terminal post,.the end of the handle 53 is provided with a slot 61, the width of which is equal to twice the thickness of an individual carrier strip 43. The carrier strips can then be removed by merely locating the strips in this slot and swinging the tool througha slight arc to affect fracture of the carrier strips at the weakened sections 45.

It will be apparent that the assembly method described above and shown in FIGS. 13-20 can be carried out with an automatic or semiautomatic insertion apparatus where large numbers of connecting devices must be applied to printed circuit boards having terminal posts located therein at regularly spaced intervals.

The receptacle means, as illustrated in FIG. 1, can be completely open or they can be covered by a dielectric housing H as illustrated in FIG. 2 which is provided with cavities 21 in which the electrical receptacle means are located. Openings 22 having beveled entrances are provided in housing H and they are in alignment with the respective receptacle means so that the leads of the microelectronic circuit means extend therethrough for electrical engagement with the receptacle means. Holes 23 are disposed in housing l-I between cavities 21 and they have secured therein barbed securing members 24 which have sections 25 extending. through apertures 26 in panel 2 and the free ends thereof are bent to secure housing H in position on panel 2.

Wings 18 can be engaged by a projection means (not shown) on the microelectronic circuit means to move the movable members 14 of the spring means 9 away from the close sections 5 in a simultaneous manner while the leads 3 are being inserted into the receptacle means, and after the leads are disposed in the receptacles, the projection means move free of wings 18 and movable members 14 move into engagement with leads 3. This arrangement provides a zero-insertion force approach which can be advantageous when a large number of leads are to be connected.

FIGS. 4 through 10 illustrate various embodiments of the spring means. In FIG. 4, wings 18a are located on stationary member 13a. Stationary member 13b in FIG. 5 is U-shaped so that the legs thereof extend along the sides of section 5 and they can, in fact, be bent into tight engagement with section 5 while wings 18b are located on movable member 14b and they have inwardly directed free ends 27 which extend along section 5 below projection 7. The embodiment of FIG. 6 is similar in construction to that of FIG. 5 except that wings 18c extend outwardly from stationary member 13c and they have inwardly directed free ends 28 extending toward one another behind movable member 140. In FIG. 7, one wing 18d extends outwardly from stationary member 13b along the side of section 5d and movable member 14d while the other wing 18dextends outwardly from movable member 14d along another side of section 5d and along stationary member 13d. The spring means 9e of FIG. 8 is similar in construction to that of FIG. 7 except that the free'ends of wings ]8e are bent inwardly and disposed in spaced relationship back of stationary member 13e and movable member 142. Wings 18f extend outwardly from stationary member 13f in FIG. 9 and parts 29 of wings 13f have been sheared therefrom and they are clenched onto section 5f of post 1 f in an undercut area 30 thereof.

Openings 10 and 1011 through 10] of the spring means 9 and 9a through 9f are dimensioned so that the sides of these openings in engagement with section 5 of the post properly engage the sides of the post section to prevent any rotation of the spring means on the post sections and, of course, slits 12 and 120 through 12f prevent the openings 10 and 10a through 10f from being deformed. In the case of the embodiment of FIGS. 5 and 9, the legs of the U-shaped stationary member 13b and parts 29 can be clenched onto sides of the post sections thereby increasing the resistance against rotation of the spring means on the post sections.

FIGS. 11 and 12 illustrate a mounting panel 31 having apertures 32 extending therethrough and into which round sections 33 of dielectric housing I-Ia are disposed. Square or rectangular sections 34 of housing I-Ia abut against adjacent housings when mounted on panel 31 to prevent any rotation therebetween. Cavity 35 is located in each section 34 and it is in communication with a rectangular opening 36 extending through round section 33. A post 1h is provided with arcuate projections 37 and post 1h is inserted into opening 36 while housing I-la is held against panel 31 until section 5h is properly positioned in cavity 35 and arcuate projections 37 are seated in a portion of round section 33 below panel 31 causing this portion to be expanded in size thereby securing housing Ha in position on the panel. Spring means 9h is pushed into cavity 35 with spring-receiving section 5h extending through oblong opening 10h until spring lance 38, which has been struck inwardly from stationary member 13h, is seated under projection 7h thereby securing spring means 9h in position. The outer end of stationary member 13h is provided with a V- shaped extension 39 having an opening 40 therein in alignment with the contact-engaging areas between section 5h and outer end h of movable member 14h so that the leads of the microelectronic circuit means can be readily guided thereinto via V-shaped extension 39 and opposing sides of housing I-Ia.

' A channel 41 is disposed in the internal surface of the side of housing Ha adjacent movable member 14h to allow outer end 15h to move thereinto and to provide anti-overstress means to prevent deformation of movable member 14h. Movable member 14h is placed under stress by virtue of the inner end thereof being in engagement with the sidewall of cavity 35 when spring means 9h is inserted into cavity 35 so that movable member 14h properly engages the leads of the microelectronic circuit means when inserted therein.

As can be discerned from the foregoing, there has been disclosed different types of electrical receptacle means for connection with leads of microelectronic circuit means which are unhoused or housed and the spring means can be replaced if they are damaged.

Changes in construction will occur to those skilled in the art and various apparently different modifications and embodiments may be made without departing from the scope of the invention. The matter set forth in the foregoing description and accompanying drawings is offered by way of illustration only.

I claim:

1. An electrical connector comprising a mounting panel, electrical posts secured in said panel at spaced locations and having spring-receiving sections extending outwardly from one surface of said panel, spring means disposed on said spring-receiving sections and including stationary members and movable members, said stationary members extending along one side of said spring-receiving sections, securing means provided by said spring-receiving sections and said stationary members securing said spring means on said springreceiving sections, said movable members being disposed along another side of said spring-receiving sections and including contact-engaging sections adjacent said spring-receiving sections, said movable members and said posts cooperating and defining contact-receiving receptacles therebetween, said movable members having outer ends with surfaces thereon, said posts having surfaces thereon, said surfaces of said posts cooperating respectively with said surfaces on the outer ends of said spring members to extend away from one another and define entryways and guide means adjacent to said contacbreceiving receptacles, and means between said spring-receiving sections and said spring means preventing rotation of said spring means relative to said spring-receiving sections.

2. An electrical connector according to claim 1 wherein said posts have conductor-receiving sections extending outwardly from another surface of said panel.

3. An electrical connector according to claim 1 wherein dielectric housing means having cavities is disposed on said panel with corresponding rows of said posts and spring means located in said cavities, said housing having openings in alignment with said posts and spring means, and means securing said housing onto said panel.

4. An electrical connector according to claim 1 wherein each of said posts is disposed in an individual dielectric housing having a section secured in an aperture in said panel by projection means on said posts, said housing having a cavity in which said spring-receiving section and spring means is disposed.

5. An electrical connector comprising a metallic elongated member having a spring-receiving section therealong, spring means defining a stationary member and a movable member connected together by a bight, said bight having an opening through which said spring-receiving section extends with said stationary member and said movable member disposed along opposite sides of said spring-receiving section, said movable member and said spring-receiving section having opposed contact-engaging areas cooperating to define a contact receiving receptacle therebetween, wherein outer ends of said spring-receiving section and said movable member have surfaces extending away from each other thereby defining guide means to said contact-engaging areas, and means provided by said stationary member and said spring-receiving section securing said spring means on said spring-receiving section.

6. An electrical connector according to claim 5 wherein at least one of said stationary and said movable members includes wing means extending outwardly therefrom and along other opposite sides of said springreceiving section to maintain said contact-engaging area of said movable member in alignment with said contact-engaging area of said springreceiving section.

7. An electrical connector according to claim 6 wherein said wing means are located on said movable member and they include inwardly directed sections at free ends thereof.

8. An electrical connector according to claim 6 wherein said wing means are located on said stationary member and they include inwardly directed sections at free ends thereof.

9. An electrical connector according to claim 6 wherein said wing means are located on each of said stationary and movable members.

10. An electrical connector according to claim 6 wherein said wing means are located on each of said stationary and movable members and they include inwardly directed sections at free ends thereof.

11. An electrical connector according to claim 6 wherein said stationary member is U-shaped and legs thereof are clenched in engagement with said other opposite sides of said spring-receiving section.

12. An electrical connector according to claim 6 wherein said stationary member is U-shaped and parts of legs thereof are clinched in engagement with said other opposite sides of said spring-receiving section.

13. An electrical connector according to claim wherein said bight has a slit therein in communication with said opening to prevent said opening from being deformed and to main tain opposing sides of said opening in tight engagement with other opposite sides of said spring-receiving section.

14. An electrical connector according to claim 13 wherein an outer end of said stationary member includes a V-shaped extension having an opening in alignment with said contactengaging areas.

15., An electrical connector according to claim 14 wherein said contact-engaging area of said spring-receiving section has a corrugated configuration and said contact-engaging area of said movable member has an inwardly directed dimple.

16. An electrical connector according to claim 15 wherein inner top edges of said wing means have beveled surfaces in alignment with said contact-engaging areas.

17. An electrical connector according to claim 16 wherein said elongated member has a conductor-receiving section spaced from said spring-receiving section.

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Referenced by
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US3729701 *Sep 1, 1971Apr 24, 1973Amp IncLongitudinal top spring receptacle
US3784955 *Feb 23, 1973Jan 8, 1974Amp IncConnecting device for printed circuit board
US3815077 *Feb 28, 1973Jun 4, 1974IttElectrical connector assembly
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Classifications
U.S. Classification439/525, 439/858
International ClassificationH01R12/71, H05K7/10, H01R13/11, H01R13/115, H01R13/187, H01R24/00, H01R13/15, H01R13/20, H01R33/74, H01L23/32
Cooperative ClassificationH05K7/1038, H01R13/11, H01R13/20, H01R13/15
European ClassificationH05K7/10E3B, H01R13/11, H01R13/15