摘要:
To provide a surface-mounting type electronic circuit unit suitable for miniaturization, circuit elements including capacitors (C), resistors (R) and inductance elements (L) and a conductive pattern (P) connected to these circuit elements are thinly formed on an alumina substrate (1), semiconductor bare chips for a diode and a transistor are bonded on a connection land of the conductive pattern via wire, an inductance element composed of a pair of conductors opposite at a predetermined interval on the aluminum board is thinly formed and a unbalance/balance converter is formed by these conductors.
摘要:
To provide a surface-mounting type electronic circuit unit suitable for miniaturization, circuit elements including capacitors (C), resistors (R) and inductance elements (L) and a conductive pattern (P) connected to these circuit elements are thinly formed on an alumina substrate (1), semiconductor bare chips for a diode and a transistor are bonded on a connection land of the conductive pattern via wire, an inductance element composed of a pair of conductors opposite at a predetermined interval on the aluminum board is thinly formed and a unbalance/balance converter is formed by these conductors.
摘要:
In a surface-mounting-type electronic circuit unit, circuit elements, including capacitors, resistors, and inductive devices, and electrically conductive patterns connected to the circuit elements are formed on an alumina board (1) as thin films; semiconductor bare chips (4) for a diode (D1) and a transistor are wire-bonded to connection lands (5) in electrically conductive patterns (p); and end-face electrodes (3) connected to grounding electrodes (GND), input electrodes, and output electrodes of electrically conductive patterns are formed at side faces of the alumina board.
摘要:
The invention provides a surface mounting typing electronic circuit unit that is suitable for miniaturization and is suitable for simple output adjustment. Circuit elements including capacitors (C), resistors (R), and inductance elements (L) and a conducting pattern connected to the circuit elements are formed on an alumina substrate (1) by means of thin film forming technique, and a diode (D1) and a semiconductor chip of a transistor are fixed to a connection land of the conducting pattern by means of wire bonding, wherein only the emitter resistor out of the base bias voltage dividing resistors and the emitter resistor of the transistor is trimmed for output adjustment.
摘要:
In a surface-mounting-type electronic circuit unit, circuit elements, including capacitors, resistors, and inductive devices, and electrically conductive patterns connected to the circuit elements are formed on an alumina board (1) as thin films; semiconductor bare chips (4) for a diode (D1) and a transistor are wire-bonded to connection lands (5) in electrically conductive patterns (p); and end-face electrodes (3) connected to grounding electrodes (GND), input electrodes, and output electrodes of electrically conductive patterns are formed at side faces of the alumina board.
摘要:
The invention provides a surface mounting typing electronic circuit unit that is suitable for miniaturization and is suitable for simple output adjustment. Circuit elements including capacitors (C), resistors (R), and inductance elements (L) and a conducting pattern connected to the circuit elements are formed on an alumina substrate (1) by means of thin film forming technique, and a diode (D1) and a semiconductor chip of a transistor are fixed to a connection land of the conducting pattern by means of wire bonding, wherein only the emitter resistor out of the base bias voltage dividing resistors and the emitter resistor of the transistor is trimmed for output adjustment.