Abstract: A radiation shielded semiconductor package for use in any variety of industries and applications is disclosed. In one embodiment, a radiation shielded semiconductor package comprises a radiation shielding base, one or more non-shielding sidewalls coupled to the shielding base, one or more radiation shielding flanges coupled to the sidewall, and one or more non-shielding coupling flanges coupled to the shielding flange. The base, the non-shielding sidewall, the shielding flange, and the non-shielding coupling flange define a device cavity, and at least one semiconductor device is positioned within the device cavity. A radiation shielding lid is coupled to the coupling flange and hermetically seals the semiconductor device within the device cavity. The shielding lid comprises shielding lid body and a non-shielding lid flange coupled to the lid body and is configured to couple to the coupling flange.

Abstract: A hermetically sealed surface mount diode package composed of: a support member of electrically conductive material; a diode element having two mutually opposed surfaces constituting, respectively, cathode and anode contact surfaces, the element resting on the support member so that one of the surfaces is in contact with the support member; an electrical contact member for conductively contacting the other one of the surfaces of the diode member, the contact member having a frame portion which surrounds the diode and a connection portion enclosed by the frame portion and conductively connected to the other one of the surfaces; a frame member of electrical insulating material surrounding the diode and interposed between, and secured to, the support member and the frame portion to form a hermetic seal with the support member and the frame portion; and a cover plate of electrically conductive material disposed on, secured to, and forming a hermetic seal with, the frame portion, wherein the support member, the fr

Abstract: Schottky barrier diode comprises a Schottky contact layer having an increased periphery to area ratio. In the illustrated embodiment, the Schottky contact layer comprises a plurality of individual contact regions interconnected by an overlying metallization layer.

Abstract: A Schottky diode has a metal lead electrically connected to the Schottky contact layer wherein the metal lead is metallurgically bonded to the diode for increased reliability, the diode having a Ta--Si--N barrier layer.

Abstract: Apparatus and method for a circuit which is connected in series between the call signal output of a vehicle detector and the call signal input of a traffic controller is disclosed. Under normal operating conditions the invention acts as a signal buffer and input of the invention will be applied to the input of the traffic controller when call signal inputs are continuously present or not present for preestablished times, then test procedures are implemented. During a test or failure condition of the vehicle detector, the detector output signal will be disconnected from the controller. The invention also provides a circuit which is connected between the loop and the loop input of the vehicle detector. The circuit along with the accompanying method is designed to modify the input impedance to the vehicle detector to apply a test or "forced" call signal to the vehicle detector input when a call signal input is not received after a predetermined period of time, a fault condition is established.

Abstract: A semiconductor contact has a thin barrier layer less than 500 angstroms in thickness of a metal such as tungsten applied between an aluminum contact layer and a metal-semiconductor compound. The metal semiconductor compound forms a junction with an underlying semiconductor substrate. The thin barrier prevents a chemical reaction between the aluminum of the contact layer and the metal of the metal-semiconductor compound.

Abstract: An error detecting circuit which senses the operating states of a plurality of traffic signal lights the energization of which is controlled by a single block of load switches and which circuit produces an error signal when certain predetermined relations exist for a predetermined period of time between the states of the lights, such as, if more than one traffic signal light of one traffic signal head is energized simultaneously or if none of the traffic signal lights of one traffic signal head is energized.

Abstract: A game bird decoy is formed as a shell representative of the upper portion that is above the waterline of a floating game bird represented. There is an open cavity below the upper portion that terminates in a waterline rim. The head is formed folded out with two similar sides to be folded together and bonded to yield a realistic head. The head is attached to the body by inserting the neck into a hole provided in the body shell. A slit in the neck provides access to the cavity within for storage of line, weight, and the like. The decoy is formed from flat sheet stock of closed cellular foam, preferably, of polyethelene. The color and color patterns as desired on the final product are applied to the flat sheet stock before vacuum forming. Painting, printing and silk screen processes are used as dictated by batch quantity considerations.