DE8130512U1 - CLIP FOR FASTENING COOLERS TO TRANSISTORS AND DIODES - Google Patents

Description

Clip for attaching Heat sinks on transistors and diodes

The fire concerns a clip for attaching kiss plates to transistors and D'.oden with at least one flat, for heating

% suitable area for drainage. Especially for semiconductor components ; ■ in the 'TO-220 housing or similar housing.

ρ In electronics, with increasing miniaturization of the components, in particular the semiconductor components of power electronics, means are required in order to dissipate the heat loss that the components still generate into the environment. In the Re ^ sI this happens through suitable heat sinks.

( ) Clips or clip-on heat sinks are used to quickly connect the components already soldered on a circuit board to a cooling surface.

Clips are known which allow the component, e.g. a transistor in the TO-220 housing, to be attached to its cooling tab, which is shown in usually also has a screw hole to clip onto a suitable housing wall.

The disadvantage of these clips is that you need holes for the clips to snap into place, which must be located pretty much exactly where is also the component to be cooled, which is soldered Components is often heavy. In addition, these clips are difficult to handle.

The innovation is therefore based on the task of creating a clip that can be mounted or dismantled without exertion _s and makes only minor demands on the accuracy of the height of the component and which can be clipped onto a housing or chassis plate.

The object is achieved according to the invention in that a spring sheet is used which only presses with its resilient end on the component and thereby presses it against the cooling surface. If the component to be cooled and the sheet metal used for heat dissipation have at least one common edge and are directly together, ie the component at the edge of the board, the spring steel sheet is bent together like a clip. If there are no common edges, the feather will remain extended

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and can either be inextricably linked with the 'kiihlblefch' läsbär'öder will. The same stamped part can be used in both cases.

The advantage of the innovation lies in the versatility of an easily malleable spring element.

The innovation will be briefly explained using an exemplary embodiment.

The accompanying drawings show

Fig. 1 clips punctured on cooling plate Fig. 2 clip used as a clamp
Fig. 3 clip on rectifier.

In Fig. 1, the clips on a cooling plate 1 are dotted. Are the potentials of the conductive back walls of the transistors 3 different, conventional isolation bushings and isolation washers must be used.

In Fig. 2 the clip 2 is bent closed as a clip and can therefore be used, if the housing wall used for cooling and the Tran sistor 3 have at least one common edge.

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Terms used

1 - heat sink sheet

2 - clip, stretched

3 - transistor

4 - housing wall

5 - clip clip

6 - circuit board

7 - rectifier

Claims (1)

Claim to protection 1. Clip for attaching heat sinks to transistors and diodes with at least one flat surface, characterized in that a spring element bent from a substantially reohteck-shaped spring steel results in a three-sided clasping that it has a chamfered end on the flat surface of the component to be cooled rests, while the other end forms the opposite counter bearing by suitable bending or by connection to the heat sink.