| 摘要 |
PROBLEM TO BE SOLVED: To provide a surface mount type electronic circuit unit which is suitably made compact. SOLUTION: On an alumina substrate 1, circuit elements including capacitors C1 to C7, resistances R1 to R3, inductance elements L1 to L3, etc., are formed as a thin film and a semiconductor bare chip of a diode D1 and a transistor Tr1 is bonded by a wire; and the inductance element L2 among the thin-film formed inductance elements L1 to L3 is formed spirally into an inductance element for resonance frequency setting and the inductance element L3 connected to the inductance element L2 is formed into a conductive pattern for adjustment and trimmed to increase the number of turns of the inductance element L2, thereby adjusting the resonance frequency. |
