Johanson Dielectrics, Inc.
For everything from high volume, low cost capacitors to application specific ceramic solutions, Johanson Dielectrics has you covered.
Johanson Dielectrics has been a worldwide producer of high quality ceramic chip capacitors for over 30 years. Our wide product offering includes the following Capacitors: Ceramic SMT and Leaded High Voltage and High Temperature, Y2 Safety Certified, Tip & Ring, Tanceram (for Tantalum replacement), Dual and Multi Capacitor Arrays, Low Inductance, X2Y, Switchmode.
Advanced materials engineering, state of the art processing, statistical analysis tools, and a quality system which emphasizes continuous process improvement are all employed to achieve goals in defect reduction, cost reduction, and design and manufacturing cycle time improvement.
The combination of a high-quality and extensive product offering, low lead times, and a worldwide network of sales and manufacturing locations makes Johanson Dielectrics a world-class business partner.
Johanson Dielectrics, Inc. Postings
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For everything from high volume, low cost capacitors to application specific ceramic solutions, Johanson Dielectrics has you covered. The mission of the Johanson Companies is to translate our customer needs into quality electronic...
1 technical article »
OOOH Colors, It Must Be Lead Free
Jun 23, 2014 | John Maxwell, Director of Product Development, Johanson Dielectrics Inc.
It was unusual to see chip terminations change colors when tin lead solders were used but with the introduction of lead free reflow soldering and the corresponding increases in reflow temperatures terminations are now changing colors. Two conditions are present when reflow temperatures are increased for lead free solder alloys that leads to discoloration. Reflow temperatures are above the melting point of tin (Sn MP is 232oC). Air temperatures commonly used in forced convection reflow systems are high enough to both melt the tin plating on the termination allowing it to be pulled into the solder joint due to solder joint liquid solder surface tension leaving behind the exposed nickel barrier. Now those metal oxide colors will be visible due to high air temperatures during reflow....
