DE3820976A1

DE3820976A1 - SMD inductor or transformer

Info

Publication number: DE3820976A1
Application number: DE19883820976
Authority: DE
Inventors: Anton Dipl Ing Schmeller
Original assignee: Vogt Electronic AG
Current assignee: Vogt Electronic AG
Priority date: 1988-06-22
Filing date: 1988-06-22
Publication date: 1989-12-28

Abstract

SMD inductors or transformers are described which can be manufactured fully automatically, independently of the core shape (single- or multiple-hole core).

Description

Für die Hochfrequenztechnik werden in steigendem Maße Drosseln und Übertrager, in SMD-Technik benötigt. Diese wurden bisher in konventioneller Weise mit großem manuellem Aufwand gefer tigt. Gemäß der Erfindung ist es möglich, mit geeigneten Wickel vollautomaten die Fertigung dieser SMD-Bauteile von jeder manu ellen Verarbeitung zu lösen.Chokes are increasingly being used for high-frequency technology and transformer, required in SMD technology. So far these have been gefer in a conventional manner with great manual effort does. According to the invention it is possible to use suitable wraps Fully automated the production of these SMD components by every manu to solve processing.

Eine Induktivität besteht aus einem Kern, einer oder mehreren Wicklung(en) und entsprechend ausgestalteten Drahtanschlußkonfi gurationen, z. B. Stiften oder (für SMD) Lötflächen. Die an sich bekannte Verformungstechnik von Ferriten durch Spritzgießen erlaubt praktisch beliebige Konfiguration des Kernes.An inductor consists of a core, one or more Winding (s) and appropriately designed wire connection confi gurations, e.g. B. pins or (for SMD) soldering pads. The well-known deformation technique of ferrites through Injection molding allows practically any configuration of the Kernes.

Für die erfindungsgemäßen Anwendungen haben sich verschiedene Kernformen als geeignet erwiesen.Various have been found for the applications according to the invention Core forms proved to be suitable.

Description of the pictures

In Abb. 1 wird ein Übertrager mit 2 Wicklungen (1) gezeigt, dessen Kern eine Bohrung (3) aufweist. Die Wicklungsenden (4) sind in üblicher Weise mit den angeformten Vorsprüngen verbunden und für SMD-Lötung geeignet.In Fig. 1 a transformer with 2 windings ( 1 ) is shown, the core of which has a bore ( 3 ). The winding ends ( 4 ) are connected in a conventional manner to the molded projections and are suitable for SMD soldering.

In Abb. 2 wird eine Spule gezeigt, bei der die Wicklung (6) durch 2 Bohrungen des Kerns (7) geführt ist. (Die Befestigung der Wick lungsenden wie bei Abb. 1.)In Fig. 2 a coil is shown, in which the winding ( 6 ) is guided through 2 holes in the core ( 7 ). (The winding ends are attached as in Fig. 1.)

In Abb. 3 wird eine Drossel gezeigt, bei der die Wicklung (8) um den Steg des H-förmig ausgestalteten Kerns (9) herumgeführt ist. (Befestigung der Wicklungsenden wie bei Abb. 1.)In Fig. 3 a choke is shown in which the winding ( 8 ) is guided around the web of the H-shaped core ( 9 ). (Fastening the winding ends as in Fig. 1)

Claims

1. SMD choke or transformer, characterized by a core with a through hole with molded projections, which serve to fix the wire, and at least one wire winding.

2. according to claim 1, characterized by a core with 2 through holes.

3. according to claim 1, characterized by a core with an H-shaped Cross-section.

4. according to claims 1 to 3, characterized in that the core is manufactured by injection molding.

5. according to one or more of the preceding claims, characterized ge indicates that a ferrite material with high specific Resistance is used.

6. SMD inductor or transformer, characterized in that Place the molded projections for wire fixing one Plastic plate is used.

7. according to claim 1 to 6, characterized in that the order the molded projections wound little winding ends least on the for the connection on the circuit board released from the isolation, and for the verb prepared in SMD technology, e.g. B. tinned are.