Browse Prior Art Database

SINGLE PIECE, FOLD UP TYPE, THERMODE SOLDERING BLADE

IP.com Disclosure Number: IPCOM000007424D
Original Publication Date: 1995-Jul-01
Included in the Prior Art Database: 2002-Mar-25
Document File: 1 page(s) / 70K

Publishing Venue

Motorola

Related People

Mitch Goodman: AUTHOR [+2]

Abstract

Thermode reflow soldering is a manufacturing technique for soldering multiple connections in one step utilizing a resistively heated thermode blade to reflow the solder at the connections. Soldering multiple I/O runners such as those used for LCD interconnects is a typical application for this tech- nology. There are several types of thermode blade types available. These are generally differentiated by the direction of heating current flow relative to the runners being soldered. Heating current in bar type thermode tips flows perpendicular to the direction of the runners. Fold-up type thermode blades pass the heating current parallel to the runners. Previous state of the art in fold up blades required a multi- piece design consisting of two support pieces with the heating section consisting offormed sheet metal section brazed between them.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 53% of the total text.

Page 1 of 1

MO7VROLA Technical Developments

SINGLE PIECE, FOLD UP TYPE, THERMODE SOLDERING BLADE

by Mitch Goodman and Garth Mager

INTRODUCTION

  Thermode reflow soldering is a manufacturing technique for soldering multiple connections in one step utilizing a resistively heated thermode blade to reflow the solder at the connections. Soldering multiple I/O runners such as those used for LCD interconnects is a typical application for this tech- nology. There are several types of thermode blade types available. These are generally differentiated by the direction of heating current flow relative to the runners being soldered. Heating current in bar type thermode tips flows perpendicular to the direction of the runners. Fold-up type thermode blades pass the heating current parallel to the runners. Previous state of the art in fold up blades required a multi- piece design consisting of two support pieces with the heating section consisting offormed sheet metal section brazed between them.

  All thermode blades are heated at the contact surface by some means of increased electrical resist- ance at the tip. As current is passed through the blade, the increased resistance at the tip causes it to heat. The increased resistance can be obtained by using a resistive material in this region or by reduc- ing the cross-sectional surface area.

in Figure 1 is a fold-up type thermode soldering tip. The Blade is machined from a single piece of stock to the dimensions required for simultaneously sold...