AXT650124 Panasonic Electric Works, AXT650124 Datasheet - Page 19

• Manufacturer Part Number: AXT650124
• Description: CONN HEADER F4S .4MM 50POS SMD
• Manufacturer: Panasonic Electric Works
• Series: F4Sr

Specifications of AXT650124

• Connector Type: Header, Center Strip Contacts
• Number Of Positions: 50
• Pitch: 0.016" (0.40mm)
• Number Of Rows: 2
• Mounting Type: Surface Mount
• Features: Solder Retention
• Contact Finish: Gold
• Mated Stacking Heights: 1mm
• Height Above Board: 0.033" (0.84mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Contact Finish Thickness: -
• Other names: 255-2399-2

Narrow-pitch connectors
Four
22
Bellows contact construction
the ability to withstand twisting and
increased resistance to shock of dropping
High precision curved molding that provides the right amount of
spring characteristics for contacts, is made possible through
precision metal processing, one of our core technologies.
A high-level ability to resist shocks has been made possible.
The need to withstand the shock of dropping and twisting during
insertion has increased in mobile devices.
V notch
(resistance to entry of foreign particles)
By using the edge for the contacting part, contact pressure per
unit area has been increased.
Compared to contacts up to now, the ability to remove flux and
foreign particles has increased. Also, the ability to prevent entry
of foreign particles before it happens has increased.
• 2-point contacting • Surface contact to edge contact • Improved
contact movement effect before and after V notch passage • The
combination of these effects greatly improves contact reliability
(resistance to entry of foreign matter)
■ Product
without notch
Matsushita Electric Works, Ltd.
More effective in eliminating flux and foreign
particles, and also more effective in keeping
foreign particles from getting inside
Tough against foreign particles and flux!
Cross section of the
socket side contact
Cross section of the
header side contact
Japan: Registration of patent
Korea: Registration of patent
Patent and Design now under application
points about our unique
improves contact reliability
(Patent No. 3726836)
(Patent No. 531938)
Tough against dropping!
■ V notched
product
Taiwan: Registration of patent
China and North America:
■ Simulation analysis
We analyzed what the ideal
spring shape would be to bring
the right spring characteristic to
the contact, and then precision
molded it using precision metal
processing, one of our core
technologies.
(Patent No. I225323)
Patent now under application.
■ F4 Contact
Construction View
Same effect as V notch
attained by double contact.
improved
Double contact
Anti-solder-rise efficiency increased due to
Ni barrier
Exposed nickel is placed on mid part of socket contacts. This
contact, while being ultra low in profile, prevents solder rise.
• Influence of solder controlled in contact and contact spring parts.
• Solder remains in the terminals and stable fillet mold is possible.
■ Exposed Ni barrier portion
Cross section of the socket side contact
Improved resistance to corrosion by
gas, etc., due to
This treatment consists of coating surface with a very thin film to
seal pinholes in the gold plating. We have developed this
porosity treatment technology, which ensures the same contact
reliability for thin gold plating as that of thick gold plating.
• Improvement in resistance
• Improvement in insertion/
• Improvement in contact
■ Plating technology
Au
plating
to corrosion
removal durability
reliability for digital signals
(Porosity treatment technology)
Porosity
treatment film
Base material
Ni plating
Pinholes
Tough against corrosive gases!
Tough against solder rise!
Surrounding
gas
porosity treatment
Cu
Ni
Au
Exposed
Ni portion
Gold plate thickness (µm)
http://www.mew.co.jp/ac/e/
Relationship
between gold plate
thickness and
number of pinholes
This shows the
relationship between the
thickness of the gold
plating on the nickel
plating (1 µm) and the
number of pinholes.