Thick-film active surge suppression module

Abstract

The invention relates to a thick-film active surge suppression module which comprises an active surge suppression circuit, an SMT (surface mounting technology) component, a copper-clad Al<2>O<3> ceramic substrate and a dual-in-line type metal airtight package shell. Electric connection of the active surge suppression circuit is converted into plane figures of copper conductors on the copper-clad Al<2>O<3> ceramic substrate by the aid of a plane conversion technology; the back surface of the copper-clad Al<2>O<3> ceramic substrate is tinned and then is thoroughly cleaned by the aid of a thick-film SMT assembly process, and then the SMT component, the dual-in-line type metal airtight package shell and the tinned copper-clad Al<2>O<3> ceramic substrate are subjected to tin soldering by a reflow soldering process; pins are ultimately connected with the dual-in-line type metal airtight package shell by means of manual tin soldering and repair soldering, the dual-in-line type metal airtight package shell is cleaned, and airtight seals are subjected to parallel seam soldering. The thick-film active surge suppression module has the advantages that clamping voltages can be precisely set and are rarely affected by temperature variation, the thick-film active surge suppression module can resist continuous surge voltage input and is good in radiating performance and high in reliability, surge current limit values can be precisely set, input voltage over-voltage and under-voltage shutdown effects can be set, and metal is packaged in an airtight manner.

Description

technical field [0001] The invention relates to electronic technology and microelectronic technology, in particular to a thick-film active surge suppression module. Background technique [0002] In the case of strong electromagnetic interference and complex power consumption environment, a surge power suppressor should be added between the power supply equipment and the power consumption equipment to protect the safety of the above equipment. [0003] Traditional surge voltage suppression is mostly implemented by varistors, transient voltage suppression diodes, etc., or by combining the above components with inductors and capacitors to achieve their effects. The biggest drawbacks of this method are: the required clamping voltage cannot be set accurately; the clamping voltage is greatly affected by temperature changes; the ability to resist continuous surge pulses is poor; there is no surge current protection function; there is no output current protection function. Content...

AI Technical Summary

Problems solved by technology

The biggest disadvantage of this method is: the required clamping voltage cannot be accurately set; the clamping voltage is greatly affected by temperature changes; the ability to resist continuous surge pulses is poor; there is no surge current protection function; there is no output current protection function

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