Surge protector semiconductor subassembly for 3-lead transistor aotline package
AssigneeJerrold Communications, General Instrument Corporation
InventorsRobert L. Fried, Enrico F. Napoletano, Marie Guillot
Life of this patent
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Abstract
The subassembly of the present invention includes three pairs of aligned steering diodes and a single thyristor situated between spaced apart conductive heat sink plates. The subassembly is configured to fit into a standard 3-lead transistor outline package by arrangement of the semiconductors and shaping of the conductive plates. In one embodiment, the plates are square, and the components are arranged such that the diode pairs and thyristor are proximate the corners of the plates. In another embodiment, a "T" arrangement is utilized for the components which are situated between "H" shaped plates.
Claims22
A semiconductor circuit module for a surge protector comprising:
- three pairs of aligned diodes and a single, unidirectional thyristor arranged in a substantially square pattern between aligned conductive plates to form a subassembly, wherein one of the conductive plates has a substantially square configuration;
- and,
- means for encapsulating the subassembly in a non-conductive package, wherein the package has a standard 3-lead transistor outline configuration.
A semiconductor circuit module for a surge protector comprising:
- three pairs of aligned diodes, and a single, unidirectional thyristor arranged between aligned conductive plates to form a subassembly, wherein one of the conductive plates is substantially "H" shaped;
- and,
- means for encapsulating the subassembly in a non-conductive package, wherein the package has a standard 3-lead transistor outline configuration.
A surge protection module comprising:
- six steering diodes wherein each of the six steering diodes has first and second sides;
- a first lead soldered to the first side of a first of the six steering diodes and to the first side of a second of the six steering diodes, wherein the first and second of the six diodes are on opposing sides of the first lead;
- a second lead soldered to the first side of a third of the six steering diodes and to the first side of a fourth of the six steering diodes, wherein the first and second of the six diodes are on opposing sides of the second lead;
- a third lead soldered to the first side of a fifth of the six steering diodes and to the first side of a sixth of the six steering diodes, wherein the first and second of the six diodes are on opposing sides of the third lead;
- a first conductive plate soldered to a second side of the first, third, and fifth of the six steering diodes;
- a second conductive plate soldered to a second side of the second, fourth, and sixth of the six steering diodes;
- a single thyristor soldered between the first and second conductive plates;
- and,
- means for encapsulating the six steering diodes, the first and second conductive plates, and the single thyristor in a package so that ends of the first, second, and third leads extend outside of the package and so that the package has a typical 3-lead transistor outline configuration.
Dependencies are inferred from the claim text.