Fine Pitch Stacking Connectors (Parallel Board-to-Board)

Fine Pitch SMT Stacking Connectors
(Parallel Board-to-Board)
Introduction — STAX LD Elastomeric Connectors
STAX Elastomeric Connectors
How STAX elastomeric
connectors work
STAX elastomers are zero
insertion force connectors
that do not require soldering.
They provide a compliant
surface-to-surface
compression connection
when deflected between
opposing mirror-image pad
patterns. STAX elastomers
are composed of alternating
layers of conductive
and non-conductive silicone
rubber. Silicone rubber
is the base material
because it has excellent
aging properties, chemical
stability, electrical reliability,
and superior performance
in shock and vibration. It
also provides a gasket-like
seal to protect the contact
surfaces.
The conductive layers consist
of tiny metallic particles
dispersed in silicone rubber.
Within each of the conductive
layers, the metallic
particles create thousands
of conductive paths.
Therefore, each conductive
layer provides multiple
points of contact at the substrate
interface. While the
conductive layers ensure
contact between mating
pads, the non-conductive
layers isolate the conductive
layers from each other.
The alternating STAX construction
– 200 conductive
layers per inch (8 per mm)
– allows multiple conductive
layers to make contact to a
single contact pad while
the non-conductive layers
electrically isolate adjacent
contact pads.
The advantage of this material
construction is that you
achieve 3-4 conductive layers
typically making contact
to a single contact pad on
the board. Also, a single
elastomeric strip (element)
is used to connect an entire
row of contacts. The multiple
layers coupled with the
thousands of conductive
paths in each layer ensure
reliable interconnect.
Why use a Tyco Electronics
Elastomeric connector:
1. Simple Implementation
Assembly is as easy as
making a sandwich. There
is no soldering, no special
tooling or machinery.
2. Easily modified
How often is a standard offthe-shelf
connector ideal for
your application? Smaller
height, higher I/O, greater
current capacity, lower
resistance, less PCB area
are all modifications that
can be made.
3. Fast
The flexible elastomeric
manufacturing process
allows quick turn on prototypes
(1 week) to test solutions
and rapid ramp on
production. Prototypes are
made with the same
process as production.
4. No tooling
An elastomer-only approach
allows the customer to
implement the housing and
alignment features within
existing plastic or metal
structure. Modifications of
elastomer length, height,
and width do not require
tooling.
5. Reliability
Tyco Electronics’ elastomeric
products have been
tested to the following:
■ MIL STD-1344
■ IEC-68-2
■ EIA-364
■ MIL-STD 202
■ JIS C 0020
■ JEIDA 38
■ INTEL SPEC 5.1, 5.2
■ NUMEROUS CUSTOMER
ACCELERATED LIFE
TESTING (ALT)
Test data available upon
request.
6. Product Support
Tyco Electronics product
engineers work directly with
customer engineering
teams on modifications and
custom solutions for volume
applications. All aspects of
the design and implementation
of the product are
reviewed to ensure a successful
product launch.
Contact Information:
Website:
www.elastomerictech.com
Phone: 1-800-989-STAX
Ext. 4463
Fax: 215-784-4522
Email: ETIapplications@
tycoelectronics.com
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Catalog 889092 Dimensions are in millimeters Dimensions are shown for USA: 1-800-522-6752 South America: 55-11-3611-1514
Revised 9-06 and inches unless otherwise reference purposes only. Canada: 1-905-470-4425 Hong Kong: 852-2735-1628
specified. Values in brackets Specifications subject Mexico: 01-800-733-8926 Japan: 81-44-844-8013
www.tycoelectronics.com are standard equivalents. to change. C. America: 52-55-5-729-0425 UK: 44-141-810-8967