AXK(5(S)/6(S))
NARROW-PITCH
CONNECTORS FOR
BOARD-TO-BOARD
CONNECTION
NARROW PITCH
(0.5mm) CONNECTORS
P5 SERIES — P5K, P5KS —
• P5K
• P5KS
Note) The external appearance and PC board pattern
differs for the P5K and P5KS series.
FEATURES
1. The product lineup consists of
3.0 mm, 3.5 mm, 4.0 mm, 4.5 mm,
5.0 mm, 5.5 mm, 6.0 mm, 6.5 mm,
7.0 mm, 8.0 mm, and 9.0 mm.
2. Strong resistance to adverse
environments! Utilizes
construction
for high contact reliability.
Note: P5KS will support V notch and Ni barrier from
November, 2005, and will have TOUGH
CONTACT construction.
1) Contacts are highly resistant to shock
caused by dropping and employ our
original bellows contact construction.
2) V notch construction used for excellent
resistance against foreign matters.
(P5KS: Available from Nov. 2005)
3) Use of Ni barrier construction is
standard. Highly effective against solder
creeping.
(P5KS: Available from Nov. 2005)
4) Porosity treatment applied for
improved resistance against corrosion.
3. Even with the low profile, the
effective mating length has been
extended to ensure that there is some
latitude in the mating.
4. Automatic mounting
1) Suction area for suction-type
automatic mounting machines is
employed.
5. Compliance with RoHS’ Directive
Environmentally friendly, the connectors’
comply with Europe’s RoHS’ Directive.
Cadmium, lead, mercury, hexavalent,
chromium, PBB and PBDE are not used.
APPLICATIONS
1. Mobile phones, PHS, mobile info-
communications terminals, and other
small portable devices
2. The 160-contacts connector:
This connector is particularly suited to
the motherboard, CPU board, and other
multi-pin expansion boards on notebook
PCs and other info-communications
applications.
Socket Header
Socket Header
Type Mated height Notes
P5K 3 mm, 3.5 mm The external
appearance and
PC board pattern
differs for the P5K
and P5KS series.
P5KS
4 mm, 4.5 mm,
5 mm, 5.5 mm,
6 mm, 6.5 mm,
7 mm, 8 mm,
9 mm
P5K P5KS
4 constructions
Bellows contact
construction
V notch construction —
Note)
Ni barrier construction —
Note)
Porosity treatment
• What is meant by “bellows type” contact?
Since the contact is
formed by bending
thin plate, it has a
spring-like quality.
This construction
helps make it resist-
ant to dropping and
twisting.
The roll surfaces
are in contact
with each other,
providing high
contact reliability.
Rather than two broken-out surfaces, the contact is
formed by the surfaces of two rolled plates. This
helps the contact hold up better to repeated
insertions and removals, while at the same time
achieving highly reliable contact.
● What is V notch construction?
By using the edge for the contacting part
and increasing contact pressure per unit
area, the effectiveness in removing flux
and contaminants is increased compared
to its predecessor. This is also effective in
preventing the trapping of contaminants.
[Cross section of contacting part]
Without notch With V notch
Header side contact cross section
Socket side contact cross section
● What is Ni barrier construction?
By providing an exposed nickel part on the
gold (Au) plated contact, solder creeping is
prevented despite the ultra low profile.
Header side contact
[Contact]
Socket side contact
Note: Construction makes solder creeping difficult
because header side is formed at the same time.
Ni barrier
Exposed
Ni part
Cu Ni Au
Cross section of
socket side contact
Pinholes
Ni plating
Base material
Porosity treatment film
What is porosity treatment?
Au plating Surrounding gas
This treatment consists of coating the
surface with a very thin film to seal pinholes
in the gold plating. This porosity treatment
technology ensures the same contact
reliability for thin gold plating as that of thick
gold plating.
●
Improvement in insertion/removal durability
●
Improvement in resistance to corrosion
●
Improvement in contact reliability for digital signals
Type Effective mating length
P5K 0.75 mm
P5KS 1.0 mm
Effective mating length
With long effective
mating lengths, even
if the connection is
not perfect, the
electrical connection
is more than enough
for normal operations.
Suction face
P5K Header P5K Socket
Mother board
CPU boards and
other multi-pin
expansion boards.
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