AN0001 – Issue 9 CN# P109132
Termination
“An alternative termination material specifically designed to absorb greater
levels of mechanical stress thereby reducing capacitor failures associated
with mechanical cracking”
FlexiCap
™
Introduction ............................................................................ 2
Queens Award for Innovation ................................................................... 3
Benefits of Using FlexiCap
™
..................................................................... 4
Customer Assembly Process Requirements ................................................ 5
FlexiCap
™
Test Summary ......................................................................... 6
Key Electrical Characteristics ................................................................... 9
Additional Information .......................................................................... 10
Ordering Information – Standard MLCC Range ......................................... 11
Syfer Technology Limited, Old Stoke Road,
Arminghall, Norwich, Norfolk, NR14 8SQ,
United Kingdom
Tel: +44 (0) 1603 723300
Tel. (Sales): 01603 723310
Fax: +44 (0) 1603 723301
Email: sales@syfer.co.uk
Web: www.knowlescapacitors.com
Application Note
Reference No.
AN0001 – FlexiCap™
Issue 9
Page 2 of 11
FlexiCap
™
Introduction
Syfer Technology Ltd introduced FlexiCap
™
in 1999 and became the first multilayer capacitor
manufacturer to offer a flexible termination to customers. This type of termination has proven to be
very successful as customers realize the benefits and also as demonstrated by other capacitor
manufacturers subsequently introducing flexible terminations, some with very similar names to
FlexiCap
™
.
FlexiCap
™
refers to the termination material that is applied over the electrodes. This material is a silver
loaded epoxy polymer that is applied using conventional termination techniques and then cured at
180ºC. Following the curing process, components are processed through the same manufacturing, test
and inspection stages when compared with the more traditional sintered terminated products.
Fired Ceramic
Dielectric
Tin Intermediate
Outer Nickel Layer Termination
Layer Base
Termination
Material
Metal
Electrodes
Picture taken at 1000x
magnification using a SEM showing
a fracture section through a
capacitor termination.
The picture demonstrates the
fibrous nature of the FlexiCap
™
termination that absorbs greater
levels of mechanical stress when
compared with standard sintered
silver termination.
Fig 1. Capacitor Construction