A P Products GREAT JUMPERS - Manual (Page 6)

A P Products
A P Products Ltd.
80 Cromwell Road
Saffron Walden, CB11 4BE
Great Britain
Tel.: +44-1799-526602
Fax: +44-1799-521408
Web: www.ap-products.co.uk
E-mail: [email protected] A P Products S.r.l.
Viale Abruzzi, 87
I-20131 Milano
Italia
Tel.: +39-02-29404697
Fax: +39-02-29523280
Web: www.ap-products.com
E-mail: [email protected]
AP1100
A P Products GmbH
Postfach 1158
D-71089 Weil im Schönbuch
Deutschland
Tel.: +49-7157-5348-0
Fax: +49-7157-5348-39
Web: www.ap-products.de
E-mail: [email protected]
Technical Information: Contact Materials
All contacts in cable assemblies
(Great Jumper) or headers are
tempered nickel-silver alloys. This
metal was selected for its
excellent overall combination of
characteristics which provide
reliable electrical performance with
or without gold plating or cladding.
High Strength
The high content of alloying
elements in nickel silvers provide
superior strength, hardness, and
ductility at lower cost than other
high-strength metals. The
hardening and the large volume of
solute nickel and zinc atoms in the
basic crystalline structure of
copper. This process eliminates
the need for costly heat treating
and provides a high work-
hardening rate.
Spring Properties
The properties of stiffness and
resilience, which combine to
create a contact’s spring
characteristics, are inherent in
nickel-silver alloys. The modulus
of elasticity (18.000.000 psi)
provides excellent stiffness while
being sufficiently low when
combined with the high yield
strength (92.000 to 120.000 psi) to
produce superior resilience -
resulting in high normal force
capabilities for producing gas-tight
contact seals.
Fatigue Strength
Nickel silver posseses a
maximum fatigue strength in
excess of 25.000 psi for
100.000.000 cycles. This
characteristic permits consistent
retention of normal forces over a
long service life.
Surface Finish Materials
Corrosion Resistance
Another invaluable characteristic
of nickel silver is its superior
resistance to oxidation, fretting,
thermal shock, tarnish and
corrosive attack by moistures
containing dissolved salts.
Solderability
Nickel silver needs only
conventional cleaning or fluxing to
remove any thin surface film before
soldering or brazing by traditional
production methods, including
wave soldering.
Cladding and Plating
Nickel silver readily accepts any
thickness of gold plating and inlay
cladding. Both are offered as
options on Great Jumpers
contacts (see table as above).
No.
00
01
02
03
05
Base metal (no additional surface)
Tinned 2,54 µm (Tin/Lead, non RoHS)
Gold 0,25 µm
Gold 0,51 µm (available on request)
Tinned 2,54 µm (RoHS compliant)
99 Other contact finishes can be produced.
Send specifications for quotation.
Surface (Minimum Thickness 1,27 µm)
04 Gold 0,76 µm (available on request)